最後更新: 2022-12-22

電壓

PCIe 支援的三種電壓分別為 +3.3V, 3.3Vaux 及 +12V # 集中在第一格

16x的最大提供功率達到75W

PCIe bus 速度 (1X)

• Gen5(32.0 GT/s)        3.938 GB/s # NRZ (128b/130b)
• Gen4(16.0 GT/s)        1.969 GB/s # NRZ (128b/130b)
• Gen3(8.0 GT/s)          984.6 MB/s # NRZ (128b/130b)
• Gen2(5.0 GT/s)          500 MB/s    # NRZ (8b/10b)
• Gen1(2.5 GT/s)          250 MB/s    # NRZ (8b/10b)

MB/s: megabyte per second(1,000 kilobytes per second)

Pin 數

Side A + B = 1 Pin

• x1     18
• x4     32
• x8     49
• x16   82

Intel chipsets

600/700 Series chipsets(11th Gen Intel Core)

• PCIe 4.0
• PCIe 3.0

100/200/300/400/500 Series chipsets

• PCIe 3.0

Series 9 Chipset Family

Chipset

• X99    Gen2
• H97    Gen2
• Z97    Gen2

PCIe 分槽功能

PCIe bifurcation is a feature that allows the division of data lanes in a PCIe slot.

i.e.

• 16X => 8X, 8X
• 16X => 8X, 4X, 4X
• 16X => 4X, 4X, 4X, 4X

=> allowing the use of some advanced expansion cards without additional PCIe bridge chips.

應用

running multiple NVMe drives from a single PCIe slot

啟用

• motherboard should support
• Enable in BIOS

不用 bifurcation 的另外方案

a special PCIe chip that handles this split ( greater complexity and higher cost )