RESULT: CUDA 3.2 only showing another 112 cores, but only showing, this architecture cannot us all 3 blocks in this version octane, maybe radiance will find out how to do it :)
Boy, maybe I should sell my 460 2GB and get a 470...same price, and from the benchmark above, looks to be 50% faster ...

I think that there may be a bigger problem coming down the road.

the Fermi architecture is taking over and is appearing in the next range of 5XX raange of cards.

Does it therefore mean that Octane will take a performance hit on these cards as well?

and what happens once the older GF100 cards ...

Jaberwocky wrote:Read this link

It could be a Memory Bandwidth issue related to the GTX460 Not sure.

http://www.anandtech.com/show/3809/nvid ... 00-king/16

http://www.refractivesoftware.com/forum ... =33&t=5012

We found out why. It is because GTX 460 (GF 104) has different architecture. Look here:

http://www.anandtech.com/show/3809/nvidias-geforce-gtx-460-the-200-king/2

One thing we haven’t discussed up until now is how an SM is internally divided up for the purposes of executing instructions. Since ...

**STK** wrote:Here are some tests..
And yes there is a speed improvement

alpha shadows off ?

Thanks t0m4sk0. So we see that GTX460 = GTX260 (336cores compared to 216cores). GTX460 is still slower than gtx470. It seems to me that the bug still exists - so what could be a problem CUDA 3.2 or Octan 2.4pre?

yes, i think that gtx 460 is still not in full perf.
because, if gtx 470 in 2.4 pre ...

from

http://www.refractivesoftware.com/forum ... &start=170

Could somebody plz put here perf. difference between 2.4 and 2.3 on gtx 470 or gtx 480 ?

Unfortunately, there is more to speed than only the number of cores. All these additional cores are only of any help, if you can utilitze them, i.e. the code runs fully parallel. How parallel things can be executed, depends on the geometry, materials and kernel settings and other stuff. -> An ...

Hi Marcus,

On my system the speed is the same with or without alpha shadows - literally identical. Again, that's on gtx 580. I just wanted to point out the tools for monitoring GPU usage. Thanks for your explanation and input on the subject.

Regards,
Voja

Yup, thanks for that :)

Regarding the ...