Whereas PCIe 5.0 could shift 63 Gigabytes per second (GB/s), 6.0 can move up to 128 GB/s. It fully doubles the already tremendous data transfer rate of PCIe 5.0 from 32 Gigatransfers per second (GT/s) to 64 GT/s per lane. In that department, PCIe 6.0 does not disappoint. That’s the amount of information that can be moved across the bus each second. The headline improvement is usually a big leap in the data rate with every PCIe revision. It’s just that the wiring is permanent and not in the form of a slot. Peripherals that are integrated into your computer’s motherboard also use PCI Express. PCIe expansion cards also accommodate sound cards, video capture cards, 10Gb Ethernet adapter, WiFi 6 cards, Thunderbolt or USB controllers, and more. While SATA tops out at 600 MB/s, high-end PCIe 4.0 drives can move more than 7000 MB/s. The latest PCIe 4.0 SSDs use “only” four lanes, but that’s enough to blow the SATA standard clear out of the water. Modern GPUs use sixteen lanes of PCIe bandwidth to maximize their performance, but not every peripheral needs that much bandwidth.
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