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JCG
03-23-2012, 05:54 PM
I'm surprised not to see a thread yet, after more than a day so here are some reviews of nVIDIA's new card, in case someone might have missed the news of the launch:

http://www.anandtech.com/show/5699/nvidia-geforce-gtx-680-review
http://hardocp.com/article/2012/03/22/nvidia_kepler_gpu_geforce_gtx_680_video_card_revie w
http://www.youtube.com/watch?v=IaPYEOUH7LE
http://www.tomshardware.com/reviews/geforce-gtx-680-review-benchmark,3161.html
http://www.xbitlabs.com/articles/graphics/display/nvidia-geforce-gtx-680.html
http://techreport.com/articles.x/22653
http://www.guru3d.com/article/geforce-gtx-680-review/26
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_680/

erikals
03-24-2012, 01:58 AM
nice,
www.youtube.com/watch?v=tjaCzrzqzHc#t=1m30s
http://www.octanerender.com/forum/viewtopic.php?f=25&t=16191&p=86882&hilit=GTX+680&sid=8a524f312ea5a2e187830056352cdef6#p86882
 

Andy Meyer
03-24-2012, 07:30 AM
imho the GTX680 is not the new high-end card. if i'm not wrong then the 680 is equippet with the gk104 chip. what i'm looking for is the new high-end card with gk110 chip. i'm not sure about the name, maybe GTX780. expected release q3 2012, maybe a 4gb version q4 2012...

Rayek
03-26-2012, 12:41 PM
The Blender devs already (after just two days!) made it run in Cycles with CUDA gpu - and unfortunately, it seems that nvidia is protecting their Quadro line once again. GPU rendering is slower than a 580, and a bit faster than a 570.

http://blenderartists.org/forum/showthread.php?239480-2.61-Cycles-render-benchmark/page18

Understandably a 'wise' business decision, but still rather disappointing. Good for games, though.

cresshead
03-26-2012, 02:55 PM
probably too early to tell really, the 680 has 1536 cuda cores which is MANY more than a 580 which has just 512 which is 1000 less than a 680!!! so it should be 3x faster really.


580: 512 cuda cores
680: 1536 cuda cores

for rendering it should SMOKE a 580.

probably best to see how it performs on a level playing field be that iray which is nvidia renderer.

Rayek
03-26-2012, 05:02 PM
In all tests so far the 680 suffers a lot with double precision calculations.

Luxmark on a 7970 is almost 4(!) times faster than the current 680, and the 580 beats the 680 by about 40%. But that would be opencl, of course.

The chip is capped/limited in CUDA performance to keep power and heat down. Very fast shader performance, on the other hand.

*edit* a 580 at this point is faster than a 680 for gpu rendering. But we will see what improved drivers will bring. It is telling how nvidia is not even mentioning gpu computing in relation to this chip at all (very different from the previous generation).

JCG
03-27-2012, 01:29 PM
probably too early to tell really, the 680 has 1536 cuda cores which is MANY more than a 580 which has just 512 which is 1000 less than a 680!!! so it should be 3x faster really.


580: 512 cuda cores
680: 1536 cuda cores

for rendering it should SMOKE a 580.

probably best to see how it performs on a level playing field be that iray which is nvidia renderer.
It wouldn't be 3x faster. In order to make room for the extra cores, the control logic of each cluster was reduced to 1/4th of what it was in Fermi and the shader clock was eliminated, so now the CUDA cores run at 1Ghz, like the rest of the card, instead of 1500-1700+.


Also, this is a GK104 chip, so it was designed to replace the GTX560 ti (GF104), not the GTX580, and the GXxx4 chips have always been crippled in hardware for double precision computing, as they don't get used in any Tesla products. If you look at how the 560 computes, compared to the 580, there is a huge gap.

When the GK100 finally does come out, I don't think it will have such a huge difference with the quadro/tesla as far as computing, but it will probably not have such a huge difference with the 580 as far as power consumption either.