GTX 680 capabilities ???

[x3studio]

Hi everyone! I just read what AnandTech published : http://www.anandtech.com/show/5699/nvid ... -review/17 - what stunned me in second graph is low power of GTX680 in SmallLux test! This looks very bad! Could anyone check GTX680 performance in Octane? Thanks in advance.

Seems that Nvidia now not using hardware sheduling and therefore more shader's doesn't necessarily mean more power.

[Kevin Sanderson]

But SmallLux is Open CL. We will have to see CUDA core performance. Maybe it will be good because the fluid simulation performance was very good.

[radiant]

Hmm wow, GTX 680 with 1536 cores . That’s like having another 580 with my 590. That means if I were to hold out till the 690 comes that means that it will be 3072 cores . Since that card will be around 700 to 800 $$, if I get two for 1900 or 2000 $$ I will have 6144 cores at my disposal

In terms of cost that would be 6 x 580s which today would be around 500 x 6 $$, pretty cheap when you think about it like that (taking out all of the over times at work at such lol)

[convergen]

GTX 580 cores are different to the GTX 680 cores... They are not as powerful in the new generation but there is more of them... Still awaiting someone to test out octane with cuda performance.... but as the opencl performance shows, the 680 may be a step back in terms of GPU Compute performance compared to the 580

[x3studio]

Seem's that NVidia will try to earn some money on us, differentiating products:
- gaming
- compute (eg. Tesla)
It could have opposite effect for them, if AMD OpenCL implementation will be as fast as it is with 7970 and there will be more shift to OpenCL (as Ivy Bridge and Intel will no doubt go in OpenCL direction), then it may be end bad for NVidia.

In other tests with OpenCL 680 is 3x times slower than 7970: http://www.legitreviews.com/article/1881/15/

[matej]

They had this "policy" of "differentiating" gamer / pro cards since Fermi, 4xx line.

At least Cycles will fly on AMD cards. Blender users should wait and see where Octane is going, before they rush in stores for Kepler.

[ROUBAL]

The most interesting thing is that EVGA makes a GTX 680 FTW 4GB !

It is so far the graphic card with the higher amount of VRAM in GTX series.

[t_3]

... lets read on here, just in case you skipped the public forum
http://www.refractivesoftware.com/forum ... 882#p86882

[x3studio]

Sill it will be less than GTX 590? Plus 590 is more capable with FP64. Right?

[t_3]

Sill it will be less than GTX 590? Plus 590 is more capable with FP64. Right?

it looks like it will be better than a 590, but in fp32 only (much worse in fp64, but this seems to be just true for gaming cards). for octane guite sufficient anyway...