AMD's HD 6990 and the upcoming HD 7990 are both dual GPU cards....but they are highly promoting their HD 7990 as a card with two Tahiti chips squeezed on one PCB...
So my question is what was HD 6990's dual GPU meant i mean was HD 6990's dual GPU was in reference to two CORES or two CHIPS(same as HD 7990)...hope you'll answer my question soon
Dual GPU means two chips. It's like Crossfire/SLI on one card. But not as good most of the time. Because of power and temp reasons, they have to be clocked down from the stock settings the same chip used on a single GPU card. Me personally, I only do two card setups. Single card dual GPU brings to many issues. My current setup is two 680's in SLI. Pretty sure that will smoke what ever AMD has planned for the 7990 since two 680's smoke two 7970's.
Dual GPU cards are essentially putting two single GPU video cards into one to achieve better preformance, this is similar to a multiple video card configuration using SLI or Crossfire, but without the need of a bridge.
Two chips. Meaning double the amount of cores/stream processors per video card. It's like running SLI/Crossfire..but with one card...it's basically 2 cards built into one.
edit what they said :D
thnx Razear and ProphetNO1...that clarified my doubt.....one more thing i wnt to ask...i was planning to replace my two GTX 480 SLI config...to the coming HD 7990...but as ProphetNO1 said dual GPU cards have many issues nd 680's SLI config will beat HD 7990...so should i wait for nVidia's dual GPU card.....or just leave the idea of Dual GPU n go for 2 GTX 680s for SLI...
It's up to you really. A single GTX 680 should be more than enough power though. I couldn't fathom why you'd need two GTX 680's or more at this point unless you're running games across 3 monitors. Even GTX 480's in SLI are still pretty beastly.
If you have the cash just laying around burning a hole in your pocket, you could always get a 7990 (or Nvidias dual GPU card when it comes out) then when you need more performance, buy another one later and have a quad SLI/Crossfire setup. You'll likely have hellacious microstutter though.
If cost/performance is as bad on the 7990 as the 7970, I would avoid it. Dual GPU cards are always slower than two cards, aside from monsters like the Mars 2 from Asus. Personally I rather have two cards. One for performance reasons and second, it looks cool. :)
See, looks AWESOME!
Personally, I'd opt for a single video card configuration since you don't have to worry about multi-GPU scaling. With CF/SLI, you don't get 100% of the scaling performance for all games so you aren't always getting your full money's worth. There are also more driver conflicts with those setups compared to using a single card.
ya allen86 i'm plannig on for multiple monitors..since i'm replacing all my stuff and going to make a whole new rig....anyways thnx...
thanx..n ya ur rig sure does look gud...
@razear thanx...was helpful...
Razear wrote:Personally, I'd opt for a single video card configuration since you don't have to worry about multi-GPU scaling. With CF/SLI, you don't get 100% of the scaling performance for all games so you aren't always getting your full money's worth. There are also more driver conflicts with those setups compared to using a single card.
Average scaling on the 500 series was 85% on two cards.
As for drivers, I have not had any issues since going nVidia the last few go arounds. AMD/ATI is notorious for bad Crossfire support. I've experienced it first hand. No plans on going back till its fixed.
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