Possible GTX 680 specifications leaked
Chris Ledenican - Tuesday, March 6, 2012 10:02pm (PST)
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3x the shaders of the GTX 580
Southern Island’s graphics cards have dominated the news cycles since their release early this year, but according to VR-Zone, Kepler is fast approaching and the architecture looks promising.
According to the site, the rumored specifications list the GTX 680 as having 1536 CUDA cores, which is three times more than the GTX 580. Like the previous generation, the GTX 680 utilizes "hotclocks" and the GPU clock speed is set at 705 MHz, meaning the shaders will operate at 1411 MHz. Additionally, the rumored specifications show the card to have a 2GB of GDDR5 memory clocked at 6000MHz and running on a 256-bit memory interface. With this sub-system the GTX 680 should have a total memory bandwidth rating of 192GB/s.
Currently this is all speculation, but we will keep you informed on any information relating to Kepler just as soon as we have it.
Source: VR-Zone
Section: Video Cards
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Will be interesting to see if the GTX 690 will now be a single GPU card utilising all the extra power of GK110 with them possibly going back to a 690 GX2 type branding for the dual GPU variant.
If this all stacks up though and provided 3x the cores equals 2-3x the rendering performance then the GTX 680 will not only be a beast in relation to the GTX 580, but in relation to AMD's latest flagship HD 7970 also. Provided they price it sensibly and the benchmarks prove my suspicions then it's major bad news for AMD..
This is assuming they haven't changed the shaders much. If they revamped the shaders then it's possible if the shaders are smaller than the previous gen.
Even if they cut out everything but the cuda cores it would be difficult to have 3x the shaders.
The GK110 may be 1536 shaders in the future but the cards that they release shortly will not be. Assuming it's the old shaders possibly 1024 or thereabouts but definitely not 1536... Here's looking forward to the 20nm half node