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by kllrnohj 2588 days ago
Ryzen only has 20 PCIE lanes, it's not that much. Basically the same as Intel since Intel uses DMI 3.0 (basically pcie x4) for communication to the chipset. So on Ryzen you get 16x lanes directly to CPU + 4 to chipset where it multoplexes, and on Intel you get 16x lanes directly to CPU + dmi3 to chipset which multoplexes to pcie.

Threadripper has 64 lanes, though, which is definitely a lot.

1 comments

Ryzen has 24 PCIe lanes: 16 for graphics (can be split to 8/8), 4 for NVMe storage, and 4 for the chipset. So you get 4 more lanes compared to Intel's consumer platforms.