GTX 295 (two-core) vs GTX 580

[Jiri.Matys]

I made some test of GTX 295 (two-core) and GTX 580. Here is the results in RT GPU:

scene 1 - really simple scene, just ground and few spheres
scene 2 - cornel box scene downloaded somewhere in this forum
scene 3 - interior, hardest scene

GTX 295 (driver 261.00 - this driver and newest makes problem for the two-core graphics board)

scene 1 - about 1400 kpaths/s (GPU usage only 50%)
scene 2 - about 440 kpaths/s (GPU usage only 50%)
scene 3 - about 200 kpaths/s (GPU usage only 50%)

GTX 295 (driver 258.96)

scene 1 - about 3800 kpaths/s (GPU usage 89%)
scene 2 - about 1250 kpaths/s (GPU usage 92%)
scene 3 - about 400 kpaths/s (GPU usage 94%)

GTX 580 (driver 263.09)

scene 1 - about 4400 kpaths/s (GPU usage 91%)
scene 2 - about 2120 kpaths/s (GPU usage 96%)
scene 3 - about 900 kpaths/s (GPU usage 98%)

Its pretty clear more complex scene more GPU usage and more power You get.

GTX 295 (driver 258.96) vs GTX 580

Scene 1 - really simple scene = only 1,15x higher performance.
Scene 2 - cornelbox = 1,7x higher performance.
Scene 3 - interior = 2,25x higher performance.

[vlado]

You can try this with the latest builds of V-Ray RT - the driver issue is avoided there, and also the performance with multiple GPUs is now slightly better.

Best regards,
Vlado

[vlado]

Very nice tests too, thanks for sharing!

Best regards,
Vlado

[Jiri.Matys]

I sell the GTX 295, so I cant now unfortunately, but great to hear this issue is fixed.
And no problem, always wanna help.

Here is a test with RT CPU. Tested on Core2Quad Q9550 @ 3,4GHz:

scene 1 - about 370 kpaths/s
scene 2 - about 260 kpaths/s
scene 3 - about 100 kpaths/s