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電腦外接匯流排速度

ISA (Industry Standard Architecture)

Specification Width in bits Speed (MB/s)
PC bus 8 8
AT bus 16 16
EISA 32 32

PCI (Peripheral Component Interconnect)

Specification Clock rate (MHz) Speed (MB/s)
PCI 1.0 33 133
PCI 2.0 33 133
PCI 2.1 66 266
PCI 2.2 66 533
PCI 2.3 66 533
PCI 3.0 66 533

PCI-X (Peripheral Component Interconnect eXtended)

Specification Clock rate (MHz) Bandwidth (MB/s)
PCI-X 1.0 66/100/133 533/800/1066
PCI-X 2.0 133(266/533) 2133/4266

AGP (Accelerated Graphics Port)

Specification Clock rate (MHz) Speed Rate (MB/s)
AGP 1.0 66 1x 266
AGP 1.0 66 2x 533
AGP 2.0 66 4x 1066
AGP 3.0 66 8x 2133

PCIe (Peripheral Component Interconnect Express)

Specification Clock rate 每通道傳輸率 頻寬 Throughput
PCIe 1.0 2.5 GHz 2.5 GT/s x1 0.25 GB/s
x2 0.5 GB/s
x4 1 GB/s
x8 2 GB/s
x16 4 GB/s
PCIe 2.0 2.5 GHz 5.0 GT/s x1 0.5 GB/s
x2 1 GB/s
x4 2 GB/s
x8 4 GB/s
x16 8 GB/s
PCIe 3.0 2.5 GHz 8.0 GT/s x1 0.985 GB/s
x2 1.969 GB/s
x4 3.938 GB/s
x8 7.877 GB/s
x16 15.754 GB/s
PCIe 4.0 2.5 GHz 16.0 GT/s x1 1.969 GB/s
x2 3.938 GB/s
x4 7.877 GB/s
x8 15.754 GB/s
x16 31.508 GB/s
PCIe 5.0 2.5 GHz 32.0 GT/s x1 3.938 GB/s
x2 7.877 GB/s
x4 15.754 GB/s
x8 31.508 GB/s
x16 63.015 GB/s
PCIe 6.0 2.5 GHz 64.0 GT/s x1 7.563 GB/s
x2 15.125 GB/s
x4 30.25 GB/s
x8 60.5 GB/s
x16 121 GB/s
PCIe 7.0 128.0 GT/s x1 15.125 GB/s
x2 30.25 GB/s
x4 60.5 GB/s
x8 121 GB/s
x16 242 GB/s

筆記型電腦外部匯流排

名稱 最高速率 換算速率
PC Card 16-bit 255 ns byte mode 31.36 Mbit/s 3.92 MB/s
PC Card 16-bit 255 ns word mode 62.72 Mbit/s 7.84 MB/s
PC Card 16-bit 100 ns byte mode 80 Mbit/s 10 MB/s
PC Card 16-bit 100 ns word mode 160 Mbit/s 20 MB/s
PC Card 32-bit (CardBus) byte mode 267 Mbit/s 33.33 MB/s
PC Card 32-bit (CardBus) word mode 533 Mbit/s 66.67 MB/s
PC Card 32-bit (CardBus) doubleword mode 1067 Mbit/s 133.33 MB/s
ExpressCard 1.2 USB 2.0 mode 480 Mbit/s 60 MB/s
ExpressCard 1.2 PCI Express mode 2500 Mbit/s 250 MB/s
ExpressCard 2.0 USB 3.0 mode 4800 Mbit/s 600 MB/s
ExpressCard 2.0 PCI Express mode 5000 Mbit/s 625 MB/s

參考資料