Show some 675MX love!

Not exactly sure where you got your numbers, but the benchmarks aggregation site below shows a big difference between the two. Personally, since it's SOLDERED to the motherboard and you're never going to be able to upgrade it, I'd spend the extra $$ if I had it.

http://www.videocardbenchmark.net/high_end_gpus.html

 

And of course the 680mx also comes with 2Gb of VRAM which is the real difference between the two. Frankly if you're serious about gaming on an iMac and aren't planning on changing it for the next few years I'd go for the 680MX. As good as the 675 is you're already going to find yourself hitting that limit today even at 1080p, as the next gen of consoles pushes graphics quality on it could become a real problem if you want decent results.

 

Hmm...I'm giong to take your assessment as accurate, seems pretty legit. Still, if you look at the benchmarks comparing the 680MX to the 680M, it's still 19% faster. At such high resolutions, that extra 1GB VRAM has got to make a difference.

 

People don't talk about it because if you are spending that much already it would be dumb to not get the 680mx.

 

what discussion about the 675mx are you specifically looking for? its all about the 680 due to gamers shelling out the dough for its performance over the 675. it sounds like you're trying to make yourself feel better about your purchase by downplaying the 680 and up the 675. Personally, I could care less about the cuda cores and the Ghz and the Mhz. As long as the games perform the way it was promised, thats all I care. I went for the 680 for that reason.