While PCIe 3.0 had a data transfer rate of 8 gigatransfers per second, PCIe 4.0 transfers data at 16 GT/s, and PCIe 5.0 at 32 GT/s. Modern PCIe m.2 SSDs use x4 lanes.Įach generation of PCIe is twice as fast as its predecessor. GPUs are usually installed in the top x16 slot, as it has the most bandwidth and, traditionally, the most direct connection to the CPU. More lanes mean more bandwidth, as well as a longer slot. ![]() On the motherboard, PCIe lanes appear in x1, x2, x4, x8, and x16 variations. ![]() PCIe (Peripheral Component Interconnect Express) is a high-bandwidth expansion bus commonly used to connect graphics cards and SSDs, as well as peripherals like capture cards and wireless cards. If you’ve built a PC before, you’ll recognize the PCIe slots running horizontally across your motherboard.
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