AMD USB CPU Lanes Chipset lanes & Gaming

Everything about latency. Tips, testing methods, mouse lag, display lag, game engine lag, network lag, whole input lag chain, VSYNC OFF vs VSYNC ON, and more! Input Lag Articles on Blur Busters.
Post Reply
User avatar
BTRY B 529th FA BN
Posts: 524
Joined: 18 Dec 2013, 13:28

AMD USB CPU Lanes Chipset lanes & Gaming

Post by BTRY B 529th FA BN » 31 Aug 2021, 10:18

With AMD having CPU lanes to the USB ports, which is better to put on those ports, the Mouse or the Keyboard, for gaming? e.g. if both are 1000Hz devices.

I've tried all combinations, both KB & Mouse on USB CPU lanes, KB & M on X570 Chipset, KB on CPU lanes + M on Chipset, M on CPU lanes + KB on Chipset.

I imagine that the CPU lanes would be faster but it seems with some games it can cause slight input lag e.g. UT4. When both are on the Chipset lanes it feels like the mouse is more accurate. Are the Chipset lanes bound by Timers e.g. platform timers like bcdedit/ useplatformtick? If so I would think there's a desync between the Mouse on the CPU lanes with the KB on the Chipset and the game.



BTW, Does Intel also have CPU lanes to the USB?


Thanks

Post Reply