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A comment on AMD Reports Q4/FY 2020 Earnings: Record Revenues Repeat. Parent comment

Re:AMD Reports Q4/FY 2020 Earnings: Record Revenues Repeat by sdflhasjd on Wednesday January 27, 2021 @12:20PM (#25930873)
As I understand, that is to be expected because PCIe GPUs get 16 lanes, which is more than enough.

There's more to PCIe than just graphics cards. SSDs, Thunderbolt, 10G Ethernet, USB 3.1-2 are some bandwidth demanding applications that could benefit

PCIe NVME drives only get 4 lanes through the m.2 port, and drives run close to the bandwidth limits on 3.0, I think I've seen benchmarks showing 30% improvements on 4.0 compared to 3.0

I'd also be interested in what difference there is running a PCIe 4.0 graphics card with only 8 lanes on 4.0 vs 3.0

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Re:AMD Reports Q4/FY 2020 Earnings: Record Revenues Repeat by leetcrew on Wednesday January 27, 2021 @03:33PM (#25933551)
> I'd also be interested in what difference there is running a PCIe 4.0 graphics card with only 8 lanes on 4.0 vs 3.0

it's measurable, but not very significant. take a look at these charts: https://www.techpowerup.com/review/nvidia-geforce-rtx-3080-p... (pcie 2.0 x16 is equivalent to or slightly worse than pcie 3.0 x8)

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