GPU benchmarks

[stilgarna]

Hello,

I've done some quick test (CUDA) between GTX580 (3gb) and GTX680 (2gb), and I've got really close render times.

Any idea how to explain that ?
Any chance to see improvement with GTX680 ?? (drivers or vray build)

Best regards...

[Jiri.Matys]

That sounds better

Yes But still speed up! I done this test before, you can see my old result on the table: Jiri.Matys: time 3m 8s. Now its 2m 41s. Cool!

That sounds better

[Jiri.Matys]

Now I know, why it was so fast. I havent textures

Its ok now, do a test again:

VRay RT 2.40.01 - CUDA
GeForce GTX 580 - driver 314.07
512 paths/pixel reached
TIME: 2m 41.1s

[jpmartin]

Just did a benchmark for the Quadro 5000 since I didn't see it in here. 512 paths per pixel in 5m 33.8s. Not very impressive, considering the price of the card a year ago. Looks like I might need to augment my system!

V-Ray 2.40.03 - CUDA
Quadro 5000
Driver: 305.93
TIME: 5m 33.8s

[Jiri.Matys]

Sorry, dont know why I wrote 1m 7s. It was 1m 20s in CUDA. In OpenCL it was 1m 47s.

And I have one GeForce GTX 580 card, but newest drivers and VRay 2.40. I think all the test was done with 2.30.

Dont know if there is another problem, like vray 2.40 doesnt reduce noise the same way like 2.30 and this is why its so fast or something like that. But I done it a few hours ago and I can do it again and post a screen to believe me.

And what I know about GeForce, 6xx series is worse for GPGPU then the 5xx series.

[vlado]

Yes, it does seem a bit off, unless there was more than one gtx 580.

Best regards,
Vlado

1m 7s on a GTX 580 and 1m 39s on a GTX 690? Seems off

[Jiri.Matys]

I do benchmark with GTX 580 again and here is results:

V-Ray 2.40 - OpenCL
GeForce GTX580 (basic without overclock)
Driver: 314.07
TIME: 1m 47s
------
V-Ray 2.40 - CUDA
TIME: 1m 20s

great!!

[raymarcher]

Ah so 680 is a single gpu and 690 is a double gpu..?

Indeed, that is why it would be cool to have a 790 if ever released , would be equivalent of 2 780's.

[Morbid Angel]

Ah so 680 is a single gpu and 690 is a double gpu..?

[vlado]

This sounds a bit too slow no? I mean JamesCutler got 1m39 on one GTX 690...?

It's exactly right; a 690 is a bit less than twice as fast as a 680; 4x 680 would be a bit more than twice as fast as a single 690; so 1m39s=99s which divided by two is about 50s, and 3LP's time is 45s - so all is good.

Best regards,
Vlado

[Morbid Angel]

This sounds a bit too slow no? I mean JamesCutler got 1m39 on one GTX 690...?

[3LP]

For you information :

4 x GTX680

49.5s for 528ppp.



Stan

Just ran a test using a single GTX 690 and it reached 512 paths per pixel in 1m 39s. Using the latest 310.70 driver and setting RT to CUDA. I have a GTX 670 here as well which I'm going to hook up and do some DR tests as well as just the GTX 670 and see how it compares to the GTX 690.