Hello. I'm building a new rig by October, and I'm carefully choosing every component for it, and there's one thing that bothers me. I've always been kind of a "Nvidia guy", but after seeing many reviews and benchmarks where the GTX 580 absolutely beats the 6970, I find the results very odd, because, according to this chart (scroll down to see it), the 6970 has higher clocks, compute performance, texture fillrate/units and stream processors than the GTX 580. That'd be enough for the 6970 to beat the GTX 580, isn't it?
Then why the GTX 580 kicks 6970' ass in every benchmark I've seen? Is it because of superior chip architecture, and thus cannot be changed, or it's a matter of bad drivers? It bothers me, because if it's a matter of drivers, who can say that ATi won't release a new Catalyst version that fixes them, and unleash all the horsepower the ATi 6xxx cards theorically have?
think of it like building a house to withstand tornado winds with x amount pieces of wood. nvidia figured out how to make their house more sturdy by arranging less pieces of wood in more efficient and powerful angles than amd was able to. amd used more pieces of wood but didn't align them as well as nvidia did with less.
the nVidia cores and AMD streams are just different, 1 nVidia core is as powerful as 5 AMD streams, but brings to you only 2-3 times more performance, in single card comparision 580 wins from 6970 hands down due to a lot of power on that card, but AMD has improved scaling with 69xx and if you compare 6970s to 580s then 6970s are mostly the same or even win on some games:
you can look some pages back, there are shown single card performances, it also depends on games, many games and MMORPGs prefer nVidia...
@ferelden, your example is truthful, but nVidia used "larger" pieces of wood than AMD did, and if you compare the volume of the wood used, then AMD used less...
, so it's just nVidia used more "pieces of wood" than AMD, but AMD has better architecture
also as mentioned above, you can't compare clocks on different cards, for example GTX 550Ti is over 3 times worse than 6950, but has higher clocks, also the clocks can be "changed" *OC*, so the performance will be improved
And when building a house with 2 rooms the structure is the same strength or slightly stronger in some case because AMD has better scaling in crossfire then Nvidia. Someone should send an email to Nvidia and AMD suggesting they should start building tornado proof houses..ha ha ha.