kerplunk101 Posted May 5, 2013 Share Posted May 5, 2013 Does anybody know what performance difference would be?Once again, single Nvidia 680m vs Crossfire AMD 7970M.This purely in terms of gaming. Both MMO's and FPS.Thanks. Quote Link to comment Share on other sites More sharing options...
Khenglish Posted May 5, 2013 Share Posted May 5, 2013 At stock a 680m is hardly any faster than a stock 7970m, so in theory crossfire 7970m will blow away a single 680m. Unfortunately that is not the case since crossfire is currently broken. Crossfire gets meaninglessly high fps since both cards will turn out frames at the same time instead of properly alternating, so with crossfire you get the actual performance of one card. Quote Link to comment Share on other sites More sharing options...
Mike Buehl Posted May 14, 2013 Share Posted May 14, 2013 ^ yeah I'm with him. Looking at it, the 7970m is a very comparable card. I'm more with NVIDIA to take use of the CUDA cores. Quote Link to comment Share on other sites More sharing options...
Coolica Posted May 15, 2013 Share Posted May 15, 2013 The 7970m xfire will definately be a lot faster, but you are sacrificing overall quality in terms of driver updates, GPU errors, etc.If you are pretty good at fixing random solutions for your GPU (finding the right drivers, testing for stability, etc.) then go get the xfire. I personally went with a single 680m, since it's just such as hassle dealing with those things. Admittedly though AMD has been getting better at getting out drivers/fixes. Quote Link to comment Share on other sites More sharing options...
joshwang11 Posted May 15, 2013 Share Posted May 15, 2013 I've done some research on this when I was looking for a laptop to buy. Dual 7970M will out preform a single 680M. You can look at the benchmark of the 1x680M vs 2x7970M below.Mobile Graphics Cards - Benchmark List - NotebookCheck.net Tech Quote Link to comment Share on other sites More sharing options...
somme Posted August 11, 2013 Share Posted August 11, 2013 Additionally SLI/Crossfire solutions might experience some screen tearing issues, that can be quite annoying. Quote Link to comment Share on other sites More sharing options...
Morejasparda Posted August 12, 2013 Share Posted August 12, 2013 Moreover, and most specially, micro stuttering Quote Link to comment Share on other sites More sharing options...
Khenglish Posted August 12, 2013 Share Posted August 12, 2013 Moreover, and most specially, micro stutteringThe latest 13.8 beta finally makes crossfire better than a single card. There's still around a 25% performance loss, but it's better than before where the frames were rendered virtually simultaneously for a 50% loss. Quote Link to comment Share on other sites More sharing options...
XolandoX Posted August 14, 2013 Share Posted August 14, 2013 If you take a look at these benchmarks you will see that the 680m and the 7970m are around the same performance levelPassMark - Radeon HD 7970M - Price performance comparisonPassMark Software - Video Card Benchmarks - Video Card Look UpSo if you have the 7970m in crossfire you'll have almost 2x the performance if the game supports crossfire correctly Quote Link to comment Share on other sites More sharing options...
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