ratGPU OpenCL raytracing benchmark

[jogshy]

I'll give it a shot with just the 480's now....
Yep faster

Wooow! I wonder what 4x 480s could do!

Btw, anybody can test any ATI card, pls? Although in all my experiments ATI cards were much slower, even when I spent a lot of time optimizing for it. I think the incoherent ray tracing's secondary rays are flushing a lot the Radeon's VLWI SIMD registers and the lack of DMA support is slowing down the PCI express transfers and kernel calls
Btw, remind to use ratGPU with an ATI card you must:

1. Get a Radeon 5XXX or one of those new 6870s . Radeon 4XXX are not supported ( because they lack the required OpenCL functionality ).
2. Download and install the ATI OpenCL SDK v2.2 at http://developer.amd.com/gpu/atistre...s/default.aspx
3. Use Catalyst 10.9 or above.