PCIe Speed Test v0.1 CPU-GPU/GPU-CPU bandwidth test

[Pyr0]

interesting, here's a quick run on my sys at stock:

[Smartidiot89]

Indeed interesting Mechromancer!

I've seen your research and I am starting to believe - hey HTLink isn't useless

The real question is, how will the PCI-E speeds affect real-world apps and gameplay? Or is this just another type of benchmark?

[Mechromancer]

Indeed interesting Mechromancer!

I've seen your research and I am starting to believe - hey HTLink isn't useless

The real question is, how will the PCI-E speeds affect real-world apps and gameplay? Or is this just another type of benchmark?

Yes, that is the question! That is a question Tony and others set out to answer in his post that I reference above. This PCIe Speed Test is a tool from the AMD Stream Power Toys site to let us actually see REAL bandwidth between the CPU and GPU. The two factors that seem to affect this bandwidth are the actual PCIe frequency and the HT Link frequency. The affect on bandwidth is very large.

I'm also trying to diagnose a bandwidth issue on my system with this tool. It appears something is configured wrong. I first thought my system wasn't giving all 16 lanes to my GPU, but then I see the CPU-to-GPU speed is fine. The GPU isn't communicating to the system properly however .

Let us know how well your system does with this test.