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

[Mechromancer]

As a response to us over in the AMD forum, I would like to see how ATI GPU PCIe performance on Intel Core 2 or Core i7 chipsets perform. We've found some interesting results over in our thread. Refer to it for more information: http://www.xtremesystems.org/forums/...d.php?t=225823

Give it a try on your single and multi-GPU systems. On the AMD side, we see there is a difference in actual GPU to CPU bandwidth speed between single and multi-GPU on even the same systems as if the PCIe link speed is increased for multi-GPUs.

This test is also useful to visually see the effect overclocking has on bandwidth. Fyi, it is very stressful and your system may appear to hang due to the stress. Don't worry, it hasn't crashed your system. Also be aware that your driver may initiate a VPU Recovery due to the stress. This is stated to be normal by the developer. This program is from the ATI Stream Power Toys site: http://developer.amd.com/gpu/ATISTRE...s/default.aspx

ENJOY!