Hi, I am running both tests on HD6970, WinXP x64, CCC 11.2, SDK2.3. I have searched the forum and found there are discussions on this issue too.
With OpenCL PCIeBandwidth test, the Host to device: 0.286868 GB/s, Device to host: 1.65559 GB/s, both are very slow!
With PCIeSpeedTest_v0.2, CPU->GPU Bandwidth is 5.304 GB/s, GPU->CPU Bandwidth is 5.913 GB/s, both for 536MB data.
What is the reason for such big different btw the two tests? Becasue of data size? Can any one give a hint? Thank you!