GPGPU performance of modern graphics cards

I considered adding this benchmark to my reviews but not to showcase raw performance but rather to expose PCI Express bandwidth between the GPU and CPU.  As you can imagine that didn't work out so well, especially considering how much data actually travels the PCI-E lanes in DX11 vs DX10/9.

While not that many consumer applications are available yet, we can still say that GPGPU has reached maturity. For now the main benefits can be found in photo and video editing software.

The interesting thing to notice is how even the slowest GPU is still faster than a CPU at this stuff and that the speed of the GPU doesn't dictate overall performance.  Drivers maybe?

Related Web URL: http://us.hardware.info/reviews/4613/review-gpgpu-...