장비 대역폭 목록 – 1.Computer buses

This is a list of device bandwidths: the channel capacity (or, more informally, bandwidth) of some computer devices employing methods of data transport is listed by bit/s, kilobit/s (kbit/s), megabit/s (Mbit/s), or gigabit/s (Gbit/s) as appropriate and also MB/s or megabytes per second. They are listed in order from lowest bandwidth to highest.

Whether to use bit/s or byte/s (B/s) is often a matter of convention. The most commonly cited measurement is bolded. In general, parallel interfaces are quoted in byte/s (B/s), serial in bit/s. On devices like modems, bytes may be more than 8 bits long because they may be individually padded out with additional start and stop bits; the figures below will reflect this. Where channels use line codes, such as Ethernet, Serial ATA and PCI Express, quoted speeds are for the decoded signal.

Many of these figures are theoretical maxima, and various real-world considerations will generally keep the actual effective throughput much lower. The actual throughput achievable on Ethernet networks, for example (especially when heavily loaded or when running over substandard media), is debatable. The figures are also simplex speeds, which may conflict with the duplex speeds vendors sometimes use in promotional materials.

All of the figures listed here are true metric quantities and use metric binary prefixes (1 kilobit, for example, is 1000 bits, not 1024 bits). Similarly, kB, MB, GB mean kilobytes, megabytes, gigabytes, not kibibytes, mebibytes, gibibytes.

Computer buses

ISA 8-Bit/4.77 MHz
9.6 Mbit/s
1.2 MB/s
Zorro II 16-Bit/7.14 MHz
28.56 Mbit/s
3.56 MB/s
ISA 16-Bit/8.33 MHz
42.4 Mbit/s
5.3 MB/s
Low Pin Count
133.33 Mbit/s
16.67 MB/s
HP-Precision Bus
184 Mbit/s
23 MB/s
EISA 8-16-32bits/8.33 MHz
320 Mbit/s
32 MB/s
VME64 32-64bits
400 Mbit/s
40 MB/s
NuBus 10MHz
400 Mbit/s
40 MB/s
DEC TURBOchannel 32-bit/12.5 MHz
400 Mbit/s
50 MB/s
MCA 16-32bits/10 MHz
660 Mbit/s
66 MB/s
NuBus90 20MHz
800 Mbit/s
80 MB/s
Sbus 32-bit/25 MHz
800 Mbit/s
100 MB/s
DEC TURBOchannel 32-bit/25 MHz
800 Mbit/s
100 MB/s
PCI 32-bit/33 MHz
1.06666 Gbit/s
133.33 MB/s
HP GSC-1X
1.136 Gbit/s
142 MB/s
Sbus 64-bit/25 MHz
1.6 Gbit/s
200 MB/s
PCI Express (x1 link)
2 Gbit/s
250 MB/s
HP GSC-2X
2.048 Gbit/s
256 MB/s
PCI 64-bit/33 MHz
2.13333 Gbit/s
266.66 MB/s
PCI 32-bit/66 MHz
2.13333 Gbit/s
266.66 MB/s
AGP 1x
2.13333 Gbit/s
266.66 MB/s
PCI Express (x2 link)
4 Gbit/s
500 MB/s
AGP 2x
4.26666 Gbit/s
533.33 MB/s
PCI 64-bit/66 MHz
4.26666 Gbit/s
533.33 MB/s
PCI-X DDR 16-bit
4.26666 Gbit/s
533.33 MB/s
PCI 64-bit/100 MHz
6.39999 Gbit/s
799.99 MB/s
PCI Express (x4 link)
8 Gbit/s
1.00 GB/s
AGP 4x
8.53333 Gbit/s
1.06666 GB/s
PCI-X 133
8.53333 Gbit/s
1.06666 GB/s
PCI-X QDR 16-bit
8.53333 Gbit/s
1.06666 GB/s
InfiniBand single 4X
10 Gbit/s
1.25 GB/s
UPA
15.36 Gbit/s
1.92 GB/s
PCI Express (x8 link)
16 Gbit/s
2 GB/s
AGP 8x
17.066 Gbit/s
2.133 GB/s
PCI-X DDR
17.066 Gbit/s
2.133 GB/s
PCI Express (x16 link)
32 Gbit/s
4 GB/s
PCI-X QDR
34.133 Gbit/s
4.266 GB/s
AGP 8x 64-bit
34.133 Gbit/s
4.266 GB/s
HyperTransport (800 MHz, 16-pair)
51.2 Gbit/s
6.4 GB/s
HyperTransport (1 GHz, 16-pair)
64 Gbit/s
8 GB/s
PCI Express (x32 link)
64 Gbit/s
8 GB/s
PCI Express 2.0 (x16 link)
64 Gbit/s
8 GB/s
PCI Express 2.0 (x32 link)
128 Gbit/s
16 GB/s
HyperTransport (2.8 GHz, 32-pair)
179.2 Gbit/s
22.4 GB/s


Computer buses (storage)

PC Floppy Disk Controller (1.44MB)
0.5 Mbit/s
62.5 kB/s
PIO Mode 0
26.4 Mbit/s
3.3 MB/s
SCSI 1 (5 MHz)
40 Mbit/s
5 MB/s
PIO Mode 1
41.6 Mbit/s
5.2 MB/s
PIO Mode 2
66.4 Mbit/s
8.3 MB/s
Fast SCSI 2 (8 bits/10 MHz)
80 Mbit/s
10 MB/s
PIO Mode 3
88.8 Mbit/s
11.1 MB/s
PIO Mode 4
133.3 Mbit/s
16.7 MB/s
Fast Wide SCSI 2 (16 bits/10 MHz)
160 Mbit/s
20 MB/s
Ultra DMA ATA 33
264 Mbit/s
33 MB/s
Ultra Wide SCSI 40 (16 bits/20 MHz)
320 Mbit/s
40 MB/s
Ultra DMA ATA 66
528 Mbit/s
66 MB/s
Ultra-2 wide SCSI 80 (16 bits/40 MHz)
640 Mbit/s
80 MB/s
Serial Storage Architecture SSA
640 Mbit/s
80 MB/s
Ultra DMA ATA 100
800 Mbit/s
100 MB/s
Fibre Channel 1GFC (1.0625 GHz)
850 Mbit/s
106.25 MB/s
Ultra DMA ATA 133
1.064 Gbit/s
133 MB/s
Serial ATA (SATA-150)
1.2 Gbit/s
150 MB/s
Ultra-3 SCSI 160 (16 bits/40 MHz DDR)
1.28 Gbit/s
160 MB/s
Fibre Channel 2GFC (2.125 GHz)
1.7 Gbit/s
212.5 MB/s
Serial ATA (SATA-300)
2.4 Gbit/s
300 MB/s
Ultra-320 SCSI (16 bits/80 MHz DDR)
2.56 Gbit/s
320 MB/s
Serial Attached SCSI
3 Gbit/s
375 MB/s
Fibre Channel 4GFC (4.25 GHz)
3.4 Gbit/s
425 MB/s
Ultra-640 SCSI (16 bits/160 MHz DDR)
(Not yet implemented)
5.12 Gbit/s
640 MB/s
Serial Attached SCSI 2 (Not yet implemented)
6 Gbit/s
750 MB/s


Computer buses (external)

PC Floppy Disk Controller (1.44MB)
0.5 Mbit/s
62.5 kB/s
PIO Mode 0
26.4 Mbit/s
3.3 MB/s
SCSI 1 (5 MHz)
40 Mbit/s
5 MB/s
PIO Mode 1
41.6 Mbit/s
5.2 MB/s
PIO Mode 2
66.4 Mbit/s
8.3 MB/s
Fast SCSI 2 (8 bits/10 MHz)
80 Mbit/s
10 MB/s
PIO Mode 3
88.8 Mbit/s
11.1 MB/s
PIO Mode 4
133.3 Mbit/s
16.7 MB/s
Fast Wide SCSI 2 (16 bits/10 MHz)
160 Mbit/s
20 MB/s
Ultra DMA ATA 33
264 Mbit/s
33 MB/s
Ultra Wide SCSI 40 (16 bits/20 MHz)
320 Mbit/s
40 MB/s
Ultra DMA ATA 66
528 Mbit/s
66 MB/s
Ultra-2 wide SCSI 80 (16 bits/40 MHz)
640 Mbit/s
80 MB/s
Serial Storage Architecture SSA
640 Mbit/s
80 MB/s
Ultra DMA ATA 100
800 Mbit/s
100 MB/s
Fibre Channel 1GFC (1.0625 GHz)
850 Mbit/s
106.25 MB/s
Ultra DMA ATA 133
1.064 Gbit/s
133 MB/s
Serial ATA (SATA-150)
1.2 Gbit/s
150 MB/s
Ultra-3 SCSI 160 (16 bits/40 MHz DDR)
1.28 Gbit/s
160 MB/s
Fibre Channel 2GFC (2.125 GHz)
1.7 Gbit/s
212.5 MB/s
Serial ATA (SATA-300)
2.4 Gbit/s
300 MB/s
Ultra-320 SCSI (16 bits/80 MHz DDR)
2.56 Gbit/s
320 MB/s
Serial Attached SCSI
3 Gbit/s
375 MB/s
Fibre Channel 4GFC (4.25 GHz)
3.4 Gbit/s
425 MB/s
Ultra-640 SCSI (16 bits/160 MHz DDR)
(Not yet implemented)
5.12 Gbit/s
640 MB/s
Serial Attached SCSI 2 (Not yet implemented)
6 Gbit/s
750 MB/s

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