OTOY Forums

Alex wrote:Has the development team already acquired a gtx680? I am really looking forward to a fair comparison (ie. with the next version of octane).

There wouldn't be much point to it. Since the release of the 690, I think it's been fairly well established that this branch of cards aren't at all intended for GPGPU.

New Gtx680 at 4Gb vram..

http://www.evga.com/products/moreInfo.a ... Family&sw=

http://www.zotac.com/index.php?page=sho ... mid=100282

well i really hope we get some buying advice soon...

still looks like the performance of a 580 is superior to a 680 at least with actual drivers .



can anybody of the devs give some word on how this might change or whats the reason for this?!
im building a new system and therefore would be really greatfull for some advice=)

thx everybody

"Our first priority now is getting instancing done. This will also take a lot of work, so there will be again a period with fewer releases. We are expecting to be able to make the first 2.6 release with instancing support around late summer on the northern hemisphere. If it turns out to be too time-consuming we may do another release before 2.6 with some other features, like support for the new Kepler GPU's. We can't put a time frame on that one though."

"The performance for now:
On Kepler cards the performance is better than the previous Kepler build, but not yet on par with the Fermi cards. We are expecting we can further improve this performance later.
On Fermi cards the performance is still below the performance of our normal CUDA 4.0 build."

"For most scenes the GTX680 with this build seems to render at around 60 to 70% of the speed of the GTX580 with the normal CUDA 4.0 builds."

Just search the forum and you will find , dont buy a gtx680 jet if you need the performance for now. Reason why the gtx680 isn't rendering good right know is because it needs to be optimized for cuda 4.2 or cuda 5.0 (and cuda 5.0 will be released at the end of the summer).