電腦裝置頻寬列表

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP


這是一個電腦裝置頻寬列表,列出一般電腦裝置的信道容量,即轉輸數據的 (理論上) 最高轉送速度,以千位元每秒(kbit/s/kbps)、百萬位元每秒(Mbit/s/Mbps)、十億位元每秒(Gbit/s/Gbps)或兆位元每秒(Tbit/s/Tbps)表示。以下每按裝置的功能分組,按信道容量由小至大排列。


為方便非技術人員比較頻寬的大小,每類頻寬都有一個公用單位,例如電話頻寬為 1.2 kbit/s,其中一種舊式數據機的頻寬為 56 kbit/s。使用位元每秒 (bit/sec) 或位元組每秒 (Byte/sec) 則視乎一般人慣用哪一個。慣用的單位在列表中以粗體表示。一般來說,并行通訊介面用位元每秒 (bit/sec),串行通訊則用位元組每秒 (Byte/sec)。至於類似數據機的裝置中,基於用作分隔每一位元組 (Byte) 的 和 Stop bit,一位元組可能含有超過八個位元 (bit),以下的列表已經有考慮這一點。而如果有像乙太網路、SATA,與PCI Express等使用到調變技術的通道,列出的頻寬速度則是表示調變後的訊號速度。


很多以下的數據只是例出理論上最快的傳送速度,有很多的因素都會令傳送速度減低。同時以下數據只表示半雙工傳送速度,可能與生產商聲稱的全雙工度有所出入。




目录





  • 1 電傳列印機或是聽障人使用的通訊設備


  • 2 數據機/家用網路連線

    • 2.1 窄頻


    • 2.2 寬頻



  • 3 移動式電話介面


  • 4 廣域網路


  • 5 區域網路


  • 6 無線網路


  • 7 無線裝置連線


  • 8 電腦匯流排


  • 9 筆記型電腦的外部匯流排


  • 10 電腦儲存設備


  • 11 電腦外部匯流排


  • 12 MAC 到 PHY 的電腦匯流排


  • 13 PHY 到 XPDR 的電腦匯流排


  • 14 記憶體匯流排


  • 15 參見


  • 16 註解


  • 17 外部連結




附註:以下所有數據單位以公制 (以10為基數) 表示:


  • 1 Bytes = 8 bits

  • 1 kbit = 1,000 bits

  • 1 kB = 1,000 Bytes

  • 1 MB = 1,000,000 Bytes

  • 1 GB = 1,000,000,000 Bytes

  • 1 TB = 1,000,000,000,000 Bytes

  • 1 PB = 1,000,000,000,000,000 Bytes

  • 1 EB = 1,000,000,000,000,000,000 Bytes

  • 1 ZB = 1,000,000,000,000,000,000,000 Bytes

  • 1 YB = 1,000,000,000,000,000,000,000,000 Bytes

如此類推。



電傳列印機或是聽障人使用的通訊設備

















名稱最高速度推出年分
TTY (V.18)45.4545 bit/s6 characters/s[1]
TTY (V.18)50 bit/s6.6 characters/s
NTSC Line 21 Closed Captioning1 kbit/s~100 characters/s


數據機/家用網路連線


需要注意的是這些數據是理論上能提供的最高速度,而實際上會因為像雜訊干擾等因素而會比較慢一些。[2]如果有出現兩個頻寬,前者表示下載頻寬,後者則是表示上傳頻寬。



窄頻










































































名稱最高速率(位元)最高速率(位元組/s)推出年分
摩斯電碼

0.021 kbit/s[3]

4 characters per second (~40 wpm)[4]
1844
110 鮑率數據機 (Bell 101)

0.11 kbit/s

0.010 kB/s (~10 cps)[5]
1959
300 數據機 (300 鮑率; Bell 103 or V.21)

0.3 kbit/s

0.03 kB/s (~30 cps)[5]
1962[6]
1200 數據機 (600 鮑率; Bell 212A or V.22)

1.2 kbit/s

0.12 kB/s (~120 cps)[5]
1976
1200/75 數據機 (600 鮑率; V.23)

1.2/0.075kbit/s
0.12/0.0075kB/s (~120 cps)[5]1988[7]
2400 數據機 (600 鮑率; V.22bis)

2.4 kbit/s

0.3 kB/s[5]
1988[7]
4800 數據機 (1600 鮑率; V.27ter)

4.8 kbit/s

0.6 kB/s[5]
1988[7]
9600 數據機 (2400 鮑率; V.32)

9.6 kbit/s

1.2 kB/s[5]
1989[6]
14.4 數據機 (2400 鮑率; V.32bis)

14.4 kbit/s

1.8 kB/s[5]
1991[6]
28.8 數據機 (3200 鮑率; V.34-1994)

28.8 kbit/s

3.6 kB/s[5]
1994
33.6 數據機 (3429 鮑率; V.34-1996/98)

33.6 kbit/s

4.2 kB/s[5]
1996[7]
56k 數據機 (8000/3429 鮑率; V.90)

56.0/33.6kbit/s[8]
7/4.2kB/s
1998
56k 數據機 (8000/8000 鮑率; V.92)

56.0/48.0kbit/s[8]
7/6kB/s
2001
可變硬體壓縮 (variable; V.92/V.44)

56.0–320.0kbit/s[8]
7–40kB/s
2000[7]
ISP-side text/image compression (variable)

56.0–1000.0kbit/s
7–125kB/s
1998[7]

ISDN 基本速率介面 (單/雙 通道)

64/128kbit/s[9]
8/16kB/s
1986[10]

IDSL (dual ISDN + 16 kbit/s data channels)

144 kbit/s

18 kB/s
2000[11]


寬頻


























































































名稱最高速率(位元)最高速率(位元組)推出年分

HDSL ITU G.991.1 a.k.a. DS1

1,544 kbit/s

193 kB/s
1998[12]

MSDSL

2,000 kbit/s

250 kB/s
?

SDSL

2,320 kbit/s

290 kB/s
?

SHDSL ITU G.991.2

5,690 kbit/s

711 kB/s
2001

ADSL (G.lite)

1536/512kbit/s
192/64kB/s
1998

ADSL (G.dmt) ITU G.992.1

8192/1024kbit/s
1024/128kB/s
1999

ADSL2 ITU G.992.3

12288/1440kbit/s
1536/180kB/s
2002

ADSL2+ ITU G.992.5

24576/3584kbit/s
3072/448kB/s
2003

DOCSIS v1.0[13] (cable modem)

38/9Mbit/s
4750/1125kB/s
1997

DOCSIS v2.0[14] (cable modem)

38/27Mbit/s
4750/3375kB/s
2001

VDSL ITU G.993.1

52 Mbit/s

7,000 kB/s
2001

VDSL2 ITU G.993.2

100 Mbit/s

12,500 kB/s
2006

VDSL2 ITU G.993.2 Amendment 1 (11/15)

300 Mbit/s

12,500 kB/s
2015

G.fast ITU G.9700

1,000 Mbit/s

125,000 kB/s
2014

DOCSIS v3.0[15] (cable modem)

160/120Mbit/s
20000/15000kB/s (~200,000,000 wpm)
2006

Uni-DSL

200 Mbit/s

25,000 kB/s
2006

BPON (G.983) fiber optic service

622/155Mbit/s
77700/19300kB/s
2005[16]

EPON (802.3ah) fiber optic service

1000/1000Mbit/s
125000/125000kB/s
2008

DOCSIS v3.1[17] (cable modem)

10000/150Mbit/s
1250000/18750kB/s
2015

GPON (G.984) 光纖服務

2488/1244Mbit/s
311000/155500kB/s (~3 billion+ wpm)
2008[18]

10G-PON (G.987) 光纖服務

10000/2500Mbit/s
1250000/312500kB/s (~12 billion+ wpm)
2012[19]


移動式電話介面


這些數據是理論上能提供的最高速度,而實際上會因為像雜訊干擾等因素而會比較慢一些。如果有出現兩個頻寬,前者表示下載頻寬,後者則是表示上傳頻寬。










































































































































名稱
下載速率(位元/位元組)
上傳速率(位元/位元組)
推出年分

GSM CSD (2G)

14.4 kbit/s[20]

1.8 kB/s

14.4 kbit/s

1.8 kB/s


HSCSD

57.6 kbit/s

5.4 kB/s

14.4 kbit/s

1.8 kB/s


GPRS (2.5G)

57.6 kbit/s

7.2 kB/s

28.8 kbit/s

3.6 kB/s


WiDEN

100 kbit/s

12.5 kB/s

100 kbit/s

12.5 kB/s


CDMA2000 1×RTT

153 kbit/s

18 kB/s

153 kbit/s

18 kB/s


EDGE (2.75G) (type 1 MS)

236.8 kbit/s

29.6 kB/s

236.8 kbit/s

29.6 kB/s
2002

UMTS 3G

384 kbit/s

48 kB/s

384 kbit/s

48 kB/s


EDGE (type 2 MS)

473.6 kbit/s

59.2 kB/s

473.6 kbit/s

59.2 kB/s


EDGE Evolution (type 1 MS)

1,184 kbit/s

148 kB/s

474 kbit/s

59 kB/s


EDGE Evolution (type 2 MS)

1,894 kbit/s

237 kB/s

947 kbit/s

118 kB/s


1×EV-DO rev. 0

2,457 kbit/s

307.2 kB/s

153 kbit/s

19 kB/s


1×EV-DO rev. A

3.1 Mbit/s

397 kB/s

1.8 Mbit/s

230 kB/s


1×EV-DO rev. B

14.7 Mbit/s

1,837 kB/s

5.4 Mbit/s

675 kB/s


HSPA (3.5G)

13.98 Mbit/s

1,706 kB/s

5.760 Mbit/s

720 kB/s


4×EV-DO Enhancements (2×2 多輸入多輸出)

34.4 Mbit/s

4.3 MB/s

12.4 Mbit/s

1.55 MB/s


HSPA+ (2×2 多輸入多輸出)

42 Mbit/s

5.25 MB/s

11.5 Mbit/s

1.437 MB/s


15×EV-DO rev. B

73.5 Mbit/s

9.2 MB/s

27 Mbit/s

3.375 MB/s


UMB (2×2 多輸入多輸出)

140 Mbit/s

17.5 MB/s

34 Mbit/s

4.250 MB/s


LTE (2×2 多輸入多輸出)

173 Mbit/s

21.625 MB/s

58 Mbit/s

7.25 MB/s
2004

UMB (4×4 多輸入多輸出)

280 Mbit/s

35 MB/s

68 Mbit/s

8.5 MB/s


EV-DO rev. C

280 Mbit/s

35 MB/s

75 Mbit/s

9 MB/s


LTE (4×4 多輸入多輸出)

326 Mbit/s

40.750 MB/s

86 Mbit/s

10.750 MB/s


廣域網路


這些數據是理論上能提供的最高速度,而實際上會因為像雜訊干擾等因素而會比較慢一些。如果有出現兩個頻寬,前者表示下載頻寬,後者則是表示上傳頻寬。





























































































































































名稱傳輸速率(位元/位元組)推出年份
DS00.064 Mbit/s0.008 MB/s
G.lite (a.k.a. ADSL Lite)1.536/0.512Mbit/s0.192/0.064MB/s
DS1 / T1 (and ISDN Primary Rate Interface)1.544 Mbit/s0.192 MB/s

E1 (and ISDN Primary Rate Interface)
2.048 Mbit/s0.256 MB/s
G.SHDSL2.304 Mbit/s0.288 MB/s

LR-VDSL2 (4 to 5 km [long-]range) (symmetry optional)
4 Mbit/s0.512 MB/s

SDSL[21]
2.32 Mbit/s0.29 MB/s
T26.312 Mbit/s0.789 MB/s

ADSL[22]
8.0/1.024Mbit/s1.0/0.128MB/s
E28.448 Mbit/s1.056 MB/s
ADSL212/3.5Mbit/s1.5/0.448MB/s

Satellite Internet[23]
16/1Mbit/s2.0/0.128MB/s
ADSL2+24/3.5Mbit/s3.0/0.448MB/s
E334.368 Mbit/s4.296 MB/s

DOCSIS v1.0 (cable modem)[13]
38/9Mbit/s4.75/1.125MB/s
DOCSIS v2.0 (cable modem)[14]38/27Mbit/s4.75/3.37MB/s

DS3 / T3 ('45 Meg')
44.736 Mbit/s5.5925 MB/s
STS-1 / OC-1 / STM-051.84 Mbit/s6.48 MB/s

VDSL (symmetry optional)
100 Mbit/s12.5 MB/s

OC-3 / STM-1
155.52 Mbit/s19.44 MB/s
DOCSIS v3.0 (cable modem)[24]222.48/171.52Mbit/s27.81/21.44MB/s

VDSL2 (symmetry optional)
250 Mbit/s31.25 MB/s
T4274.176 Mbit/s34.272 MB/s
T5400.352 Mbit/s50.044 MB/s
OC-9466.56 Mbit/s58.32 MB/s

OC-12 / STM-4
622.08 Mbit/s77.76 MB/s
OC-18933.12 Mbit/s116.64 MB/s
OC-241.244 Gbit/s155.5 MB/s
OC-361.900 Gbit/s237.5 MB/s

OC-48 / STM-16
2.488 Gbit/s311.04 MB/s
OC-964.976 Gbit/s622.08 MB/s

OC-192 / STM-64
9.953 Gbit/s1.244125 GB/s

10 Gigabit Ethernet WAN PHY
9.953 Gbit/s1.244125 GB/s
10 Gigabit Ethernet LAN PHY10.000 Gbit/s1.25 GB/s
OC-25613.271 Gbit/s1.659 GB/s

OC-768 / STM-256
39.813 Gbit/s4.976 GB/s

OC-1536 / STM-512
79.626 Gbit/s9.953 GB/s

OC-3072 / STM-1024
159.252 Gbit/s19.907GB/s


區域網路


由於檔頭與其他因素,承載資料的吞吐量是小於實際資料傳輸量,所以不要將速度與實際資料傳輸率混為一談。「通常實際速度會因為當前流量而降至 1/3-2/3 的速度。而且,如果發生任何傳輸問題而使得實體層發生重新傳送的狀況時,吞吐量也會因而受影響。」[25]





































































































































































































































































名稱最高速率(位元/位元組)推出年分
LocalTalk230 kbit/s28.8 kB/s1988
Econet800 kbit/s100 kB/s1981
Omninet1 Mbit/s125 kB/s
IBM PC Network2 Mbit/s250 kB/s1985

ARCNET (Standard)
2.5 Mbit/s312.5 kB/s1977

Chaosnet (Original)
4 Mbit/s3.0 Mbit/s1971

Token Ring (Original)
4 Mbit/s500 kB/s1985

Ethernet (10BASE-X)
10 Mbit/s1.25 MB/s1980 (1985 IEEE Standard)

Token Ring (Later)
16 Mbit/s2 MB/s1989
ARCnet Plus20 Mbit/s2.5 MB/s1992
TNCS100 Mbit/s12.5 MB/s1993?
100VG100 Mbit/s12.5 MB/s1995
Token Ring IEEE 802.5t100 Mbit/s12.5 MB/s

Fast Ethernet (100BASE-X)
100 Mbit/s12.5 MB/s1995
FDDI100 Mbit/s12.5 MB/s

MoCA 1.0[26]
100 Mbit/s12.5 MB/s

MoCA 1.1[26]
175 Mbit/s21.875 MB/s
HomePlug AV200 Mbit/s25 MB/s2005

FireWire (IEEE 1394) 400[27][28]
400 Mbit/s50 MB/s1995
HIPPI800 Mbit/s100 MB/s
IEEE 19011,000 Mbit/s125 MB/s2010
Token Ring IEEE 802.5v1 Gbit/s125 MB/s2001

Gigabit Ethernet (1000BASE-X)
1 Gbit/s125 MB/s1998

Reflective memory or RFM2 (1.25 µs latency)
2 Gbit/s235 MB/s1970
Myrinet 20002 Gbit/s250 MB/s

Infiniband SDR 1×[29]
2 Gbit/s250 MB/s2001

RapidIO Gen1 1×
2.5 Gbit/s312.5 MB/s2000
Quadrics QsNetI3.6 Gbit/s450 MB/s

Infiniband DDR 1×[29]
4 Gbit/s500 MB/s2005

RapidIO Gen2 1×
5 Gbit/s625 MB/s2008

Infiniband QDR 1×[29]
8 Gbit/s1 GB/s2007

Infiniband SDR 4×[29]
8 Gbit/s1 GB/s
Quadrics QsNetII8 Gbit/s1 GB/s

RapidIO Gen1 4x
10 Gbit/s1.25 GB/s

RapidIO Gen2 2x
10 Gbit/s1.25 GB/s2008

10 Gigabit Ethernet (10GBASE-X)
10 Gbit/s1.25 GB/s2002-2006
Myri 10G10 Gbit/s1.25 GB/s

Infiniband FDR-10 1×[30]
10.31 Gbit/s1.29 GB/s

NUMAlink 3
12.8 Gbit/s1.6 GB/s2004

Infiniband FDR 1×[30]
13.64 Gbit/s1.7 GB/s2011

Infiniband DDR 4×[29]
16 Gbit/s2 GB/s2005

RapidIO Gen2 4x
20 Gbit/s2.5 GB/s2008

Scalable Coherent Interface (SCI) Dual Channel SCI, x8 PCIe
20 Gbit/s2.5 GB/s

Infiniband SDR 12×[29]
24 Gbit/s3 GB/s

RapidIO Gen4 1×
24.63 Gbit/s3.079 GB/s2016

Infiniband EDR 1×[30]
25 Gbit/s3.125 GB/s2014

25 Gigabit Ethernet (25GBASE)
25 Gbit/s3.125 GB/s2016

NUMAlink 4
25.6 Gbit/s3.2 GB/s2004

Infiniband QDR 4×[29]
32 Gbit/s4 GB/s2007

RapidIO Gen2 8x
40 Gbit/s5 GB/s2008

40 Gigabit Ethernet (40GBASE-X) 4×
40 Gbit/s5 GB/s2010

Infiniband FDR-10 4×[30]
41.25 Gbit/s5.16 GB/s

Infiniband DDR 12×[29]
48 Gbit/s6 GB/s2005

NUMAlink 6
53.6 Gbit/s6.7 GB/s2012

Infiniband FDR 4×[30]
54.54 Gbit/s6.82 GB/s2011

RapidIO Gen2 16×
80 Gbit/s10 GB/s2008

Infiniband QDR 12×[29]
96 Gbit/s12 GB/s2007

Infiniband EDR 4×[30]
100 Gbit/s12.5 GB/s2014

100 Gigabit Ethernet (100GBASE-X) 10×/4×
100 Gbit/s12.5 GB/s2010/2018
Omni-Path100 Gbit/s12.5 GB/s2015

Infiniband FDR-10 12×[30]
123.75 Gbit/s15.47 GB/s

NUMAlink 7
159.52 Gbit/s19.94 GB/s2014

Infiniband FDR 12×[30]
163.64 Gbit/s20.45 GB/s2011

Infiniband EDR 12×[30]
300 Gbit/s37.5 GB/s2014


無線網路


802.11 都是半雙工形式的網路。在存取點模式,所有的承載資料都要經過 AP。當兩台電腦要用同一台 AP 相互通訊時,所有的承載資料都要二次傳輸:第一次從發出者到 AP,再來從 AP 發送到接收者,這將使實際頻寬折半。

























































標準最高速率(位元/位元組)推出年分
Classic WaveLAN2 Mbit/s250 kB/s1988
IEEE 802.112 Mbit/s250 kB/s1997

RONJA (full duplex)
10 Mbit/s1.25 MB/s2001
IEEE 802.11a54 Mbit/s6.75 MB/s1999
IEEE 802.11b11 Mbit/s1.375 MB/s1999
IEEE 802.11g54 Mbit/s6.75 MB/s2003

IEEE 802.16 (WiMAX)
70 Mbit/s8.75 MB/s2004

IEEE 802.11g with Super G by Atheros
108 Mbit/s13.5 MB/s2003

IEEE 802.11g with 125 High Speed Mode by Broadcom
125 Mbit/s15.625 MB/s2003
IEEE 802.11g with Nitro by Conexant140 Mbit/s17.5 MB/s2003
IEEE 802.11n600 Mbit/s75 MB/s2009

IEEE 802.11ac (maximum theoretical speed)
6.8–6.93Gbit/s850–866.25MB/s2012

IEEE 802.11ad (maximum theoretical speed)
7.14–7.2Gbit/s892.5–900MB/s2011


無線裝置連線





































































名稱最高速率(位元/位元組)推出年分
ANT20 kbit/s2.5 kB/s

IrDA-Control
72 kbit/s9 kB/s

IrDA-SIR
115.2 kbit/s14 kB/s

802.15.4 (2.4 GHz)
250 kbit/s31.25 kB/s
Bluetooth 1.11 Mbit/s125 kB/s2002
Bluetooth 2.0+EDR3 Mbit/s375 kB/s2004

IrDA-FIR
4 Mbit/s500 kB/s

IrDA-VFIR
16 Mbit/s2 MB/s
Bluetooth 3.025 Mbit/s3.125 MB/s2009
Bluetooth 4.025 Mbit/s3.125 MB/s2010
Bluetooth 4.1 Mbit/s MB/s2013
Bluetooth 4.2 Mbit/s MB/s2014
Bluetooth 5.050 Mbit/s6.25 MB/s2016

IrDA-UFIR
96 Mbit/s12 MB/s

WUSB-UWB
480 Mbit/s60 MB/s

IrDA-Giga-IR
1,024 Mbit/s128 MB/s


電腦匯流排









































































































































































































































































































































































































名稱傳輸速率(位元/位元組)推出年分
I²C3.4 Mbit/s425 kB/s1992

Apple II series (incl. Apple IIGS) 8-bit/1 MHz
8 Mbit/s
1 MB/s[31][32]
1977

SS-50 Bus 8-bit/1(?) MHz
8 Mbit/s1 MB/s

STD-80 8-bit/8 MHz
16 Mbit/s2 MB/s

ISA 8-Bit/4.77 MHz
19.1 Mbit/s2.39 MB/s1981
STD-80 16-bit/8 MHz32 Mbit/s4 MB/s

Zorro II 16-bit/7.14 MHz[33]
42.4 Mbit/s5.3 MB/s1986

ISA 16-Bit/8.33 MHz
66.7 Mbit/s8.33 MB/s1984

Europe Card Bus 8-Bit/10 MHz
66.7 Mbit/s8.33 MB/s1977

S-100 bus 8-bit/10 MHz
80 Mbit/s10 MB/s1976

Serial Peripheral Interface Bus (Up to 100 MHz)
100 Mbit/s12.5 MB/s1989
Low Pin Count125 Mbit/s
15.63 MB/s [x]
2002

STEbus 8-Bit/16 MHz
128 Mbit/s16 MB/s1987

C-Bus 16-bit/10 MHz
160 Mbit/s
20 MB/s[34]
1982
HP Precision Bus184 Mbit/s23 MB/s

STD-32 32-bit/8 MHz
256 Mbit/s
32 MB/s[35]


NESA 32-bit/8 MHz
256 Mbit/s32 MB/s

EISA 8-16-32bit/8.33 MHz
266.56 Mbit/s33.32 MB/s1988

VME64 32-64bit
400 Mbit/s40 MB/s1981

NuBus 10 MHz
400 Mbit/s40 MB/s1987
DEC TURBOchannel 32-bit/12.5 MHz400 Mbit/s50 MB/s

MCA 16-32bit/10 MHz
660 Mbit/s66 MB/s1987
NuBus90 20 MHz800 Mbit/s80 MB/s1991

APbus 32-bit/25(?) MHz
800 Mbit/s
100 MB/s[36]


Sbus 32-bit/25 MHz
800 Mbit/s100 MB/s1989
DEC TURBOchannel 32-bit/25 MHz800 Mbit/s100 MB/s

Local Bus 98 32-bit/33 MHz
1,056 Mbit/s132 MB/s

VESA Local Bus (VLB) 32-bit/33 MHz
1,067 Mbit/s133.33 MB/s1992

PCI 32-bit/33 MHz
1,067 Mbit/s133.33 MB/s1993
HP GSC-1X1,136 Mbit/s142 MB/s

Zorro III 32-bit/async (eq. 37.5 MHz)[37][38]
1,200 Mbit/s
150 MB/s[39]
1990
VESA Local Bus (VLB) 32-bit/40 MHz1,280 Mbit/s160 MB/s1992
Sbus 64-bit/25 MHz1.6 Gbit/s200 MB/s1995

PCI Express 1.0 (×1 link)[40]
2.5 Gbit/s
250 MB/s [z]
2004
HP GSC-2X2.048 Gbit/s256 MB/s
PCI 64-bit/33 MHz2.133 Gbit/s266.7 MB/s1993
PCI 32-bit/66 MHz2.133 Gbit/s266.7 MB/s1995

AGP 1×
2.133 Gbit/s266.7 MB/s1997

RapidIO Gen1 1×
2.5 Gbit/s312.5 MB/s
HIO bus2.560 Gbit/s320 MB/s

GIO64 64-bit/40 MHz
2.560 Gbit/s320 MB/s

PCI Express 1.0 (×2 link)[40]
5 Gbit/s
500 MB/s [z]
2011
PCI Express 2.0 (×1 link)[41]5 Gbit/s
500 MB/s [z]
2007
AGP 2×4.266 Gbit/s533.3 MB/s1997
PCI 64-bit/66 MHz4.266 Gbit/s533.3 MB/s

PCI-X DDR 16-bit
4.266 Gbit/s533.3 MB/s

RapidIO Gen2 1×
5 Gbit/s625 MB/s
PCI 64-bit/100 MHz6.4 Gbit/s800 MB/s
PCI Express 3.0 (×1 link)[42]8 Gbit/s
984.6 MB/s [y]
2011

Unified Media Interface (UMI) (×4 link)
10 Gbit/s
1 GB/s [z]
2011

Direct Media Interface (DMI) (×4 link)
10 Gbit/s
1 GB/s [z]
2004

Enterprise Southbridge Interface (ESI)
8 Gbit/s1 GB/s
PCI Express 1.0 (×4 link)[40]10 Gbit/s
1 GB/s [z]
2004
AGP 4×8.533 Gbit/s1.067 GB/s1998

PCI-X 133
8.533 Gbit/s1.067 GB/s
PCI-X QDR 16-bit8.533 Gbit/s1.067 GB/s

InfiniBand single 4×[29]
8 Gbit/s1 GB/s

RapidIO Gen1 4×
10 Gbit/s1.25 GB/s

RapidIO Gen2 2×
10 Gbit/s1.25 GB/s
UPA15.360 Gbit/s1.920 GB/s
Unified Media Interface 2.0 (UMI 2.0; ×4 link)20 Gbit/s
2 GB/s [z]
2012

Direct Media Interface 2.0 (DMI 2.0; ×4 link)
20 Gbit/s
2 GB/s [z]
2011
PCI Express 1.0 (×8 link)[40]20 Gbit/s
2 GB/s [z]
2004
PCI Express 2.0 (×4 link)[41]20 Gbit/s
2 GB/s [z]
2007
AGP 8×17.066 Gbit/s2.133 GB/s2002
PCI-X DDR17.066 Gbit/s2.133 GB/s

RapidIO Gen2 4×
20 Gbit/s2.5 GB/s

Sun JBus (200 MHz)
20.48 Gbit/s2.56 GB/s2003

HyperTransport (800 MHz, 16-pair)
25.6 Gbit/s3.2 GB/s2001
PCI Express 3.0 (×4 link)[42]32 Gbit/s
3.938 GB/s [y]
2011
HyperTransport (1 GHz, 16-pair)32 Gbit/s4 GB/s
PCI Express 1.0 (×16 link)[40]40 Gbit/s
4 GB/s [z]
2004
PCI Express 2.0 (×8 link)[41]40 Gbit/s
4 GB/s [z]
2007
PCI-X QDR34.133 Gbit/s4.266 GB/s
AGP 8× 64-bit34.133 Gbit/s4.266 GB/s

RapidIO Gen2 8x
40 Gbit/s5 GB/s

Direct Media Interface 3.0 (DMI 3.0; ×4 link)
40 Gbit/s
4 GB/s [z]
2015
PCI Express 3.0 (×8 link)[42]64 Gbit/s
7.877 GB/s [y]
2011
PCI Express 1.0 (×32 link)[40]80 Gbit/s
8 GB/s [z]
2001
PCI Express 2.0 (×16 link)[41]80 Gbit/s
8 GB/s [z]
2007

RapidIO Gen2 16x
80 Gbit/s10 GB/s
PCI Express 3.0 (×16 link)[42]128 Gbit/s
15.75 GB/s [y]
2011
PCI Express 2.0 (×32 link)[41]160 Gbit/s
16 GB/s [z]
2007

QPI (4.80GT/s, 2.40 GHz)
153.6 Gbit/s19.2 GB/s
HyperTransport 2.0 (1.4 GHz, 32-pair)179.2 Gbit/s22.4 GB/s2004

QPI (5.86GT/s, 2.93 GHz)
187.52 Gbit/s23.44 GB/s

QPI (6.40GT/s, 3.20 GHz)
204.8 Gbit/s25.6 GB/s

QPI (7.2GT/s, 3.6 GHz)
230.4 Gbit/s28.8 GB/s2012
PCI Express 3.0 (×32 link)[42]256 Gbit/s
31.51 GB/s [y]
2011

QPI (8.0GT/s, 4.0 GHz)
256.0 Gbit/s32.0 GB/s2012

QPI (9.6GT/s, 4.8 GHz)
307.2 Gbit/s38.4 GB/s2014
HyperTransport 3.0 (2.6 GHz, 32-pair)332.8 Gbit/s41.6 GB/s2006
HyperTransport 3.1 (3.2 GHz, 32-pair)409.6 Gbit/s51.2 GB/s2008
NVLink640 Gbit/s80 GB/s2016

NVLink 2.0

2,400 Gbit/s

300 GB/s
2017
Infinity Fabric (512bit * 2s * 2666Mhz)[43]2.729984 Tbit/s341.248 GB/s2017

Infinity Fabric (Max theoretical)
4.096 Tbit/s512 GB/s2017


筆記型電腦的外部匯流排

















































名稱最高速率(位元/位元組)推出年分

PC Card 16-bit 255 ns byte mode
31.36 Mbit/s3.92 MB/s
PC Card 16-bit 255 ns word mode62.72 Mbit/s7.84 MB/s
PC Card 16-bit 100 ns byte mode80 Mbit/s10 MB/s
PC Card 16-bit 100 ns word mode160 Mbit/s20 MB/s
PC Card 32-bit (CardBus) byte mode267 Mbit/s33.33 MB/s

ExpressCard 1.2 USB 2.0 mode
480 Mbit/s60 MB/s
PC Card 32-bit (CardBus) word mode533 Mbit/s66.66 MB/s
PC Card 32-bit (CardBus) doubleword mode1,067 Mbit/s133.33 MB/s
ExpressCard 1.2 PCI Express mode2,500 Mbit/s250 MB/s
ExpressCard 2.0 USB 3.0 mode4,800 Mbit/s600 MB/s
ExpressCard 2.0 PCI Express mode5,000 Mbit/s625 MB/s


電腦儲存設備













































































































































































































































名稱最高速率(位元/位元組)推出年分

Teletype Model 33 paper tape (70 bit/s, 10 ASCII characters per second)
0.000070 Mbit/s0.000010 MB/s1963

TRS-80 Model 1 Level 1 BASIC cassette tape interface (250 bit/s )
0.00025 Mbit/s0.000032 MB/s1977

Apple 2 cassette tape interface (1500 bit/s)
0.0015 Mbit/s0.0002 MB/s1977
Single Density 8-inch FM Floppy Disk Controller (160 KB)0.250 Mbit/s0.031 MB/s1973
Double Density 5.25-inch MFM Floppy Disk Controller (360 KB)0.500 Mbit/s0.062 MB/s1978
High Density MFM Floppy Disk Controller (1.2 MB/1.44 MB)1.0 Mbit/s0.124 MB/s1984
CD Controller (1×)1.171 Mbit/s0.146 MB/s1988

MFM hard disk
5 Mbit/s0.625 MB/s1980

RLL hard disk
7.5 Mbit/s0.937 MB/s
DVD Controller (1×)11.1 Mbit/s1.32 MB/s
ESDI24 Mbit/s3 MB/s

ATA PIO Mode 0
26.4 Mbit/s3.3 MB/s1986
HD DVD Controller (1×)36 Mbit/s4.5 MB/s
Blu-ray Controller (1×)36 Mbit/s4.5 MB/s

SCSI (Narrow SCSI) (5 MHz)[44]
40 Mbit/s5 MB/s1986

ATA PIO Mode 1
41.6 Mbit/s5.2 MB/s1994

ATA PIO Mode 2
66.4 Mbit/s8.3 MB/s1994

Fast SCSI (8 bits/10 MHz)
80 Mbit/s10 MB/s

ATA PIO Mode 3
88.8 Mbit/s11.1 MB/s1996

AoE over Fast Ethernet[45]
100 Mbit/s11.9 MB/s2009

iSCSI over Fast Ethernet[46]
100 Mbit/s11.9 MB/s2004

ATA PIO Mode 4
133.3 Mbit/s16.7 MB/s1996

Fast Wide SCSI (16 bits/10 MHz)
160 Mbit/s20 MB/s

Ultra SCSI (Fast-20 SCSI) (8 bits/20 MHz)
160 Mbit/s20 MB/s
Ultra DMA ATA 33264 Mbit/s33 MB/s1998

Ultra Wide SCSI (16 bits/20 MHz)
320 Mbit/s40 MB/s

Ultra-2 SCSI 40 (Fast-40 SCSI) (8 bits/40 MHz)
320 Mbit/s40 MB/s
Ultra DMA ATA 66533.6 Mbit/s66.7 MB/s2000
Blu-ray Controller (16×)576 Mbit/s72 MB/s

Ultra-2 wide SCSI (16 bits/40 MHz)
640 Mbit/s80 MB/s
Serial Storage Architecture SSA640 Mbit/s80 MB/s1990
Ultra DMA ATA 100800 Mbit/s100 MB/s2002

Fibre Channel 1GFC (1.0625 GHz)[47]
850 Mbit/s103.23 MB/s1997

AoE over gigabit Ethernet, jumbo frames[48]
1,000 Mbit/s124.2 MB/s2009

iSCSI over gigabit Ethernet, jumbo frames[49]
1,000 Mbit/s123.9 MB/s2004
Ultra DMA ATA 1331,064 Mbit/s133 MB/s2005

Ultra-3 SCSI (Ultra 160 SCSI; Fast-80 Wide SCSI) (16 bits/40 MHz DDR)
1,280 Mbit/s160 MB/s

SATA revision 1.0[50]
1,500 Mbit/s
150 MB/s [a]
2003

Fibre Channel 2GFC (2.125 GHz)[47]
1,700 Mbit/s206.5 MB/s2001

Ultra-320 SCSI (Ultra4 SCSI) (16 bits/80 MHz DDR)
2,560 Mbit/s320 MB/s

Serial Attached SCSI (SAS)[50]
3,000 Mbit/s
300 MB/s [a]
2004

SATA Revision 2.0[50]
3,000 Mbit/s
300 MB/s [a]
2004

Fibre Channel 4GFC (4.25 GHz)[47]
3,400 Mbit/s413 MB/s2004

Serial Attached SCSI (SAS) 2[50]
6,000 Mbit/s
600 MB/s [a]
2009

SATA Revision 3.0[50]
6,000 Mbit/s
600 MB/s [a]
2008

Fibre Channel 8GFC (8.50 GHz)[47]
6,800 Mbit/s826 MB/s2005

Fibre Channel 16GFC (14.025 GHz)[47]
13,600 Mbit/s
1,652 MB/s [b]
2011

Serial Attached SCSI (SAS) 3[50]
12,000 Mbit/s1,200 MB/s2013

AoE over 10GbE[48]
10,000 Mbit/s1,242 MB/s2009

iSCSI over 10GbE[49]
10,000 Mbit/s1,239 MB/s2004

FCoE over 10GbE[51]
10,000 Mbit/s1,206 MB/s2009
SATA revision 3.2 - SATA Express
16,000 Mbit/s2,000 MB/s2013

Serial Attached SCSI (SAS) 4 (preliminary specification)
22,500 Mbit/s
2,400 MB/s [c]
tba

Fibre Channel 32GFC (28.05 GHz)[47]
26,424 Mbit/s
3,303 MB/s [b]
2016

NVMe over M.2 or U.2 (using PCI Express 3.0 ×4 link)[42]
32,000 Mbit/s3,938 MB/s2013

iSCSI over InfiniBand 4×
32,000 Mbit/s4,000 MB/s2007

iSCSI over 100G Ethernet[49]
100,000 Mbit/s12,392 MB/s2010

FCoE over 100G Ethernet[51]
100,000 Mbit/s12,064 MB/s2010


電腦外部匯流排





































































































































































名稱最高速率(位元/位元組)推出年分
Apple Desktop Bus10.0 kbit/s1.25 kB/s1986
PS/2 port12.0 kbit/s1.5 kB/s1987
Serial MIDI
31.25 kbit/s3.9 kB/s1983

CBM Bus max[52][53]
41.6 kbit/s5.1 kB/s1981
Serial RS-232 max230.4 kbit/s28.8 kB/s1962
Serial DMX512A
250.0 kbit/s31.25 kB/s1998

Parallel (Centronics)
1 Mbit/s125 kB/s
1994 !1970 (standardised 1994)
Serial 16550 UART max1.5 Mbit/s187.5 kB/s

USB 1.0 low speed
1.536 Mbit/s192 kB/s1996
Serial UART max2.7648 Mbit/s345.6 kB/s
GPIB/HPIB (IEEE-488.1) IEEE-488 max.8 Mbit/s1 MB/s
1976 !Late 1960s (standardised 1976)
Serial EIA-422 max.10 Mbit/s1.25 MB/s
USB 1.0 full speed12 Mbit/s1.5 MB/s1996

Parallel (Centronics) EPP 2 MHz
16 Mbit/s2 MB/s1992
Serial EIA-485 max.35 Mbit/s4.375 MB/s
GPIB/HPIB (IEEE-488.1-2003) IEEE-488 max.64 Mbit/s8 MB/s

FireWire (IEEE 1394) 100
98.304 Mbit/s12.288 MB/s1995

FireWire (IEEE 1394) 200
196.608 Mbit/s24.576 MB/s1995

FireWire (IEEE 1394) 400
393.216 Mbit/s49.152 MB/s1995
USB 2.0 high speed480 Mbit/s60 MB/s2000

FireWire (IEEE 1394b) 800[54]
786.432 Mbit/s98.304 MB/s2002

Fibre Channel 1 Gb SCSI
1,062.5 Mbit/s100 MB/s

FireWire (IEEE 1394b) 1600[54]
1.573 Gbit/s196.6 MB/s2007

Fibre Channel 2 Gb SCSI
2,125 Mbit/s200 MB/s

eSATA (SATA 300)
3 Gbit/s375 MB/s2004

CoaXPress Base (up and down bidirectional link)

3.125 Gbit/s + 20.833 Mbit/s
390 MB/s2009

FireWire (IEEE 1394b) 3200[54]
3,145.7 Mbit/s393.216 MB/s2007
External PCI Express 2.0 ×14 Gbit/s500 MB/s

Fibre Channel 4 Gb SCSI
4.25 Gbit/s531.25 MB/s
USB 3.0 SuperSpeed5 Gbit/s625 MB/s2010

eSATA (SATA 600)
6 Gbit/s750 MB/s2011

CoaXPress full (up and down bidirectional link)

6.25 Gbit/s + 20.833 Mbit/s
781 MB/s2009
External PCI Express 2.0 ×28 Gbit/s1,000 MB/s
USB 3.1 SuperSpeed+10 Gbit/s1,250 MB/s2013
Thunderbolt
20 Gbit/s !2 × 10 Gbit/s

2,500 MB/s !2 × 1,250 MB/s
2011
External PCI Express 2.0 ×416 Gbit/s2,000 MB/s
Thunderbolt 220 Gbit/s2,500 MB/s2013
External PCI Express 2.0 ×832 Gbit/s4,000 MB/s
Thunderbolt 340 Gbit/s5,000 MB/s2015
External PCI Express 2.0 ×1664 Gbit/s8,000 MB/s


MAC 到 PHY 的電腦匯流排

























































名稱最高速率(位元/位元組)推出年分

Media Independent Interface (MII; 4 lanes)
100 Mbit/s12.5 MB/s
Reduced MII (RMII; 2 lanes)100 Mbit/s12.5 MB/s
Serial MII (SMII; 1 lane)100 Mbit/s12.5 MB/s
Gigabit MII (GMII; 8 lanes)1.0 Gbit/s125 MB/s
Reduced gigabit/s MII (RGMII; 4 lanes)1.0 Gbit/s125 MB/s
Serial gigabit/s MII (SGMII; 2 lanes)1.25 Gbit/s125 MB/s
Reduced serial gigabit/s MII (RSGMII; 2 lanes)2.5 Gbit/s250 MB/s
Reduced serial gigabit/s MII plus (RSGMII-PLUS; 2 lanes)5.0 Gbit/s500 MB/s
Quad serial gigabit/s MII (QSGMII; 2 lanes)5.0 Gbit/s500 MB/s
10 gigabit/s MII (XGMII; 32 lanes)10.0 Gbit/s1.25 GB/s
XGMII attachment unit interface (XAUI; 4 lanes)10.0 Gbit/s1.25 GB/s
40 gigabit/s MII (XLGMII)40.0 Gbit/s5 GB/s
100 gigabit/s MII (CGMII)100.0 Gbit/s12.5 GB/s2008


PHY 到 XPDR 的電腦匯流排









名稱最高速率(位元/位元組)推出年分
10 gigabit/s 16-bit interface (XSBI; 16 lanes)0.995 Gbit/s0.124 GB/s


記憶體匯流排


雙通道頻寬是理論上能夠達到的最大頻寬值,並不表示實際操作會有相等的效能提升。在許多方面,雙通道(2 倍頻寬)的效能與單通道的效能相近。





















































































































































































































































































































記憶體類型晶片規格記憶體頻率記憶體速率記憶體頻寬(位元/位元組)
FPM DRAM45 ns22 MHz0.177 GT/s1.416 Gbit/s
177 MB/s
EDO DRAM30 ns33 MHz0.266 GT/s2.128 Gbit/s
266 MB/s
PC-66 SDR SDRAM10/15 ns66 MHz0.066 GT/s4.264 Gbit/s
533 MB/s
PC-100 SDR SDRAM8 ns100 MHz0.100 GT/s6.4 Gbit/s
800 MB/s
PC-133 SDR SDRAM7/7.5 ns133 MHz0.133 GT/s8.528 Gbit/s
1.066 GB/s
RIMM-1200 RDRAMPC-600300 MHz0.600 GT/s9.6 Gbit/s
1.2 GB/s
RIMM-1400 RDRAMPC-700350 MHz0.700 GT/s11.2 Gbit/s
1.4 GB/s
RIMM-1600 RDRAMPC-800400 MHz0.800 GT/s12.8 Gbit/s
1.6 GB/s
PC-1600 DDR SDRAMDDR-200100 MHz0.200 GT/s12.8 Gbit/s
1.6 GB/s
RIMM-2100 RDRAMPC-1066533 MHz1.066 GT/s17.034 Gbit/s
2.133 GB/s
PC-2100 DDR SDRAMDDR-266133 MHz0.266 GT/s17.034 Gbit/s
2.133 GB/s
PC-2700 DDR SDRAMDDR-333166 MHz0.333 GT/s21.336 Gbit/s
2.667 GB/s
PC-3200 DDR SDRAMDDR-400200 MHz0.400 GT/s25.6 Gbit/s
3.2 GB/s
PC2-3200 DDR2 SDRAMDDR2-400200 MHz0.400 GT/s25.6 Gbit/s
3.2 GB/s
PC-3500 DDR SDRAMDDR-433216 MHz0.433 GT/s27.728 Gbit/s
3.466 GB/s
PC-3700 DDR SDRAMDDR-466233 MHz0.466 GT/s29.864 Gbit/s
3.733 GB/s
PC-4000 DDR SDRAMDDR-500250 MHz0.500 GT/s32 Gbit/s
4 GB/s
PC-4200 DDR SDRAMDDR-533266 MHz0.533 GT/s34.128 Gbit/s
4.266 GB/s
PC2-4200 DDR2 SDRAMDDR2-533266 MHz0.533 GT/s34.128 Gbit/s
4.266 GB/s
PC-4400 DDR SDRAMDDR-550275 MHz0.550 GT/s35.2 Gbit/s
4.4 GB/s
PC-4800 DDR SDRAMDDR-600300 MHz0.600 GT/s38.4 Gbit/s
4.8 GB/s
PC2-5300 DDR2 SDRAMDDR2-667333 MHz0.667 GT/s42.664 Gbit/s
5.333 GB/s
PC2-6000 DDR2 SDRAMDDR2-750375 MHz0.750 GT/s48 Gbit/s
6 GB/s
PC2-6400 DDR2 SDRAMDDR2-800400 MHz0.800 GT/s51.2 Gbit/s
6.4 GB/s
PC3-6400 DDR3 SDRAMDDR3-800400 MHz0.800 GT/s51.2 Gbit/s
6.4 GB/s
PC2-7200 DDR2 SDRAMDDR2-900450 MHz0.900 GT/s57.6 Gbit/s
7.2 GB/s
PC2-8000 DDR2 SDRAMDDR2-1000500 MHz1 GT/s64 Gbit/s
8 GB/s
PC2-8500 DDR2 SDRAMDDR2-1066533 MHz1.066 GT/s68 Gbit/s
8.5 GB/s
PC3-8500 DDR3 SDRAMDDR3-1066533 MHz1.066 GT/s68 Gbit/s
8.5 GB/s
PC2-8800 DDR2 SDRAMDDR2-1100550 MHz1.1 GT/s70.4 Gbit/s
8.8 GB/s
PC2-8888 DDR2 SDRAMDDR2-1100550 MHz1.111 GT/s71.104 Gbit/s
8.888 GB/s
PC2-9136 DDR2 SDRAMDDR2-1142571 MHz1.142 GT/s73.088 Gbit/s
9.136 GB/s
PC2-9200 DDR2 SDRAMDDR2-1150575 MHz1.15 GT/s73.6 Gbit/s
9.2 GB/s
PC2-9600 DDR2 SDRAMDDR2-1200600 MHz1.2 GT/s76.8 Gbit/s
9.6 GB/s
PC2-10000 DDR2 SDRAMDDR2-1250625 MHz1.25 GT/s80 Gbit/s
10 GB/s
PC3-10600 DDR3 SDRAMDDR3-1333667 MHz1.333 GT/s85.336 Gbit/s
10.667 GB/s
PC3-11000 DDR3 SDRAMDDR3-1375688 MHz1.375 GT/s88 Gbit/s
11 GB/s
PC3-12800 DDR3 SDRAMDDR3-1600800 MHz1.6 GT/s102.4 Gbit/s
12.8 GB/s
PC3-13000 DDR3 SDRAMDDR3-1625813 MHz1.625 GT/s104 Gbit/s
13 GB/s
PC3-14400 DDR3 SDRAMDDR3-1800900 MHz1.8 GT/s115.2 Gbit/s
14.4 GB/s
PC3-14900 DDR3 SDRAMDDR3-1866933 MHz1.866 GT/s119.464 Gbit/s
14.933 GB/s
PC3-15000 DDR3 SDRAMDDR3-1866933 MHz1.866 GT/s119.464 Gbit/s
14.933 GB/s
PC3-16000 DDR3 SDRAMDDR3-20001,000 MHz2 GT/s128 Gbit/s
16 GB/s
PC3-17000 DDR3 SDRAMDDR3-21331,067 MHz2.133 GT/s136.528 Gbit/s
17.066 GB/s
PC4-17000 DDR4 SDRAMDDR4-21331,067 MHz2.133 GT/s136.5 Gbit/s
17 GB/s[55]
PC3-17600 DDR3 SDRAMDDR3-22001,100 MHz2.2 GT/s140.8 Gbit/s
17.6 GB/s
PC3-19200 DDR3 SDRAMDDR3-24001,200 MHz2.4 GT/s153.6 Gbit/s
19.2 GB/s
PC3-21300 DDR3 SDRAMDDR3-26661,333 MHz2.666 GT/s170.4 Gbit/s
21.3 GB/s
PC3-24000 DDR3 SDRAMDDR3-30001,500 MHz3.0 GT/s192 Gbit/s
24 GB/s
PC4-25600 DDR4 SDRAMDDR4-32001,600 MHz3.2 GT/s204.8 Gbit/s
25.6 GB/s


參見


  • 位元率

  • Comparison of latency and throughput

  • 球鞋網路


註解




  1. ^ TTY uses a Baudot code, not ASCII. This uses 5 bits per character instead of 8, plus one start and approx. 1.5 stop bits (7.5 total bits per character sent).


  2. ^ Data communication over the telephone network


  3. ^ Morse can transport 26 alphabetic, 10 numeric and one interword gap plaintext symbols. Transmitting 37 different symbols requires 5.21 bits of information (25.21=37). A skilled operator encoding the benchmark "PARIS" plus an interword gap (equal to 31.26 bits) at 40 wpm is operating at an equivalence of 20.84 bit/s.


  4. ^ WPM, or Words Per Minute, is the number of times the word "PARIS" is transferred per minute. Strictly speaking the code is quinary, accounting inter-element, inter-letter, and inter-word gaps, yielding 50 binary elements (bits) per one word. Counting characters, including inter-word gaps, gives six characters per word or 240 characters per minute, and finally four characters per second.


  5. ^ 5.05.15.25.35.45.55.65.75.85.9 All modems are wrongly assumed to be in serial operation with 1 start bit, 8 data bits, no parity, and 1 stop bit (2 stop bits for 110-鮑率 modems). Therefore, currently modems are wrongly calculated with transmission of 10 bits per 8-bit byte (11 bits for 110-鮑率 modems). Although the serial port is nearly always used to connect a modem and has equivalent data rates, the protocols, modulations and error correction differ completely.


  6. ^ 6.06.16.2 數據機 Types and Timeline, Daxal Communications, 2003-12-16 [2009-04-16], (原始内容存档于2008-10-08) 


  7. ^ 7.07.17.27.37.47.5 ITU-T Recommendations: V Series: Data communication over the telephone network. ITU. 


  8. ^ 8.08.18.2 56K modems: V.90 and V.92 have just 5% overhead for the protocol signalling. The maximum capacity can only be achieved when the upstream (service provider) end of the connection is digital, i.e. a DS0 channel.


  9. ^ Note that effective aggregate bandwidth for an ISDN installation is typically higher than the rates shown for a single channel due to the use of multiple channels. A basic rate interface (BRI) provides two "B" channels and one "D" channel. Each B channel provides 64 kBit/s bandwidth and the "D" channel carries signaling (call setup) information. B channels can be bonded to provide a 128 kbit/s data rate. Primary rate interfaces (PRI) vary depending on whether the region uses E1 (Europe, world) or T1 (North America) bearers. In E1 regions, the PRI carries 30 B-channels and one D-channel; in T1 regions the PRI carries 23 B-channels and one D-channel. The D-channel has different bandwidth on the two interfaces.


  10. ^ Massey, David, Timeline of Telecommunications, Telephone Tribute, 2006-07-04 [2009-04-16] 


  11. ^ Adam.com.au


  12. ^ Recommendation G.991.1 (10/98). ITU. 


  13. ^ 13.013.1 DOCSIS 1.0 互联网档案馆的存檔,存档日期2006-06-13. includes technology which first became available around 1995–1996, and has since become very widely deployed. DOCSIS 1.1 互联网档案馆的存檔,存档日期2006-06-13. introduces some security improvements and Quality of Service (QoS).


  14. ^ 14.014.1 DOCSIS 2.0 互联网档案馆的存檔,存档日期2009-09-04. specifications provide increased upstream throughput for symmetric services.


  15. ^ DOCSIS 3.0 互联网档案馆的存檔,存档日期2006-06-19. includes support for channel bonding and IPv6.


  16. ^ G.983.2. ITU. 


  17. ^ DOCSIS 3.1 is currently in development by the Cablelabs Consortium


  18. ^ G.984.4 : Gigabit-capable passive optical networks (G-PON). ITU. 


  19. ^ G.987 : 10-Gigabit-capable passive optical network (XG-PON) systems. ITU. 


  20. ^ Most operators only support up to 9600bit/s


  21. ^ SDSL is available in various speeds.


  22. ^ ADSL connections will vary in throughput from 64 kbit/s to several Mbit/s depending on configuration. Most are commonly below 2 Mbit/s. Some ADSL and SDSL connections have a higher digital bandwidth than T1 but their rate is not guaranteed, and will drop when the system gets overloaded, whereas the T1 type connections are usually guaranteed and have no contention ratios.


  23. ^ Satellite internet may have a high bandwidth but also has a high latency due to the distance between the modem, satellite and hub. One-way satellite connections exist where all the downstream traffic is handled by satellite and the upstream traffic by land-based connections such as 56K modems and ISDN.


  24. ^ 引用错误:没有为名为DOCSIS 30的参考文献提供内容


  25. ^ Ethernet throughput


  26. ^ 26.026.1 "MoCA 1.1 improves throughput" over coaxial cable to 175 Mbits/s versus the 100 Mbits/s provided by the MoCA 1.0 specification.


  27. ^ FireWire natively supports TCP/IP, and is often used at an alternative to Ethernet when connecting 2 nodes.
    Tweaktown.com



  28. ^ Data rate comparison between FW and Giganet shows that FW's lower overhead has nearly the same throughput as Giganet. Unibrain.com 互联网档案馆的存檔,存档日期2008-02-07.


  29. ^ 29.029.129.229.329.429.529.629.729.829.9 InfiniBand SDR, DDR and QDR use an 8b/10b encoding scheme.


  30. ^ 30.030.130.230.330.430.530.630.730.8 InfiniBand FDR-10, FDR and EDR use a 64b/66b encoding scheme.


  31. ^ Mac History


  32. ^ VAW: Apple IIgs Specs 互联网档案馆的存檔,存档日期2011-01-10.


  33. ^ The Zorro II bus use 4 clocks per 16-Bit of data transferred. See the Zorro III technical specification for more information.


  34. ^ C-Bus日语Cバス, Bus used in early NEC PC-9800 series and compatible systems


  35. ^ STD 32 Bus Specification and Designer's Guide


  36. ^ Local Area Networks Newsletter by Paul Polishuk, September 1992, Page 7 (APbus used in Sony NeWS and NEC UP4800 workstations and NEC EWS4800 servers after VMEbus and before switch to PCI)


  37. ^ Dave Haynie, designer of the Zorro III bus, claims in this posting that the theoretical max of the Zorro III bus can be derived by the timing information given in chapter 5 of the Zorro III technical specification.


  38. ^ Dave Haynie, designer of the Zorro III bus, states in this posting that Zorro III is an asynchronous bus and therefore does not have a classical MHz rating. A maximum theoretical MHz value may be derived by examining timing constraints detailed in the Zorro III technical specification, which should yield about 37.5 MHz. No existing implementation performs to this level.


  39. ^ Dave Haynie, designer of the Zorro III bus, claims in this posting that Zorro III has a max burst rate of 150 MB/s.


  40. ^ 40.040.140.240.340.440.5 Note that PCI Express 1.0/2.0 lanes use an 8b/10b encoding scheme.


  41. ^ 41.041.141.241.341.4 PCIe 2.0 effectively doubles the bus standard's bandwidth from 2.5 GT/s to 5 GT/s


  42. ^ 42.042.142.242.342.442.5 PCIe 3.0 increases the bandwidth from 5 GT/s to 8 GT/s and switches to 128b-130b encoding


  43. ^ https://www.amd.com/en/products/cpu/amd-epyc-7601


  44. ^ SCSI-1, SCSI-2 and SCSI-3 are signaling protocols and do not explicitly refer to a specific rate. Narrow SCSI exists using SCSI-1 and SCSI-2. Higher rates use SCSI-2 or later.


  45. ^ minimum overhead is 38 byte L1/L2, 14 byte AoE per 1024 byte user data


  46. ^ minimum overhead is 38 byte L1/L2, 20 byte IP, 20 byte TCP per 1460 byte user data


  47. ^ 47.047.147.247.347.447.5 Fibre Channel 1GFC, 2GFC, 4GFC use an 8b/10b encoding scheme. Fibre Channel 10GFC, which uses a 64B/66B encoding scheme, is not compatible with 1GFC, 2GFC and 4GFC, and is used only to interconnect switches.


  48. ^ 48.048.1 minimum overhead is 38 byte L1/L2, 14 byte AoE per 8192 byte user data


  49. ^ 49.049.149.2 minimum overhead is 38 byte L1/L2, 20 byte IP, 20 byte TCP per 8960 byte user data


  50. ^ 50.050.150.250.350.450.5 SATA and SAS use an 8b/10b encoding scheme.


  51. ^ 51.051.1 minimum overhead is 38 byte L1/L2, 36 byte FC per 2048 byte user data


  52. ^ proprietary serial version of IEEE-488 by Commodore International


  53. ^ http://cbmmuseum.kuto.de/floppy.html


  54. ^ 54.054.154.2 FireWire (IEEE 1394b) uses an 8b/10b encoding scheme.


  55. ^ Scott Mueller. Upgrading and Repairing PCs. Que Publishing. Mar 7, 2013. Table 6.11: JEDEC Standard DDR4 Module (284-PIN DIMM) Speeds and Transfer Rate



外部連結


  • Interconnection Speeds Compared


  • Need for Speed: Theoretical Bandwidth Comparison — Contains a graph illustrating bandwidth speeds

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