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Gaming video cards 590/6990?

post #1 of 22
Thread Starter 
Currently running xfired HD6870s and in the market for more power! After reading several reviews im still up in arms as to witch card is better. Figured i'd get your opinion as to witch card is better? also curious about the 7970 but from what i gather its not as good as the 6990. Another question I had is it possible to put a 6990 in xfire with one of my current 6870s or any other card thats not as expensive as another 6990?
post #2 of 22
From what I've seen, the 6990 ends up being implemented better. The 590 has a bad rep of subpar voltage regulation, and that puts me off; though I don't know if any non-reference models have been released with better VRMs.

The 6990 will naturally perform better than the 7970, as you're looking at two top-end chips working in tandem. This chart gives you the crossfire compatibility for AMD cards; so you'd have to pick up a 6970 to pair with the 6990.

That being said, my recommendation would be, if you can, wait a bit for more cards and competition from Nvidia to launch. That will not only give you a wider selection of next-gen parts, you can also opt for dropping prices. If you would rather buy now, get two 7970s; they're incredibly capable, overclock really well, and have more performance headroom as drivers improve.

EDIT: And welcome to OCN smile.gif
post #3 of 22
Get the 7970. All around better drivers because its a single GPU vs dual. Heck you could even sell your two 6870's and possibly get two 7970's(Using extra money as well).
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post #4 of 22
I would advice the 6990 over the 590. Much greater overclocking ability (assuming you're into that sort of thing). I can't remember if its quieter and the wattage consumption but surely you would know those things OP and would be able to throw it in either cards favour. (WOW just looked the cards are locked in terms of wattage, noise and an advantage to the 590 in temperatures).

On this forum I would predict that you're gonna see people side with the red just for the problems with the 590's VRM's. But if you're not going to overclock then it sounds better on paper from the Guru3D review than the 6990.

I also seem to remember people, when the 590 came out, saying that two 580's was actually cheaper than the 590. You might want to check out an actual SLI solution or Crossfire solution before deciding solely on one of these dual-gpu cards.

Also I agree wholeheartedly with Efeman, wait until nvidia's new cards come out and the price drops.


http://www.guru3d.com/article/geforce-gtx-590-review/21
http://www.guru3d.com/article/radeon-hd-6990-review/24
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post #5 of 22
Two 580's work much better than a 590.

Personally, I'd get another 6870 and tri-fire them... cheaper solution.
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post #6 of 22
Quote:
Originally Posted by forsaken View Post

Currently running xfired HD6870s and in the market for more power! After reading several reviews im still up in arms as to witch card is better. Figured i'd get your opinion as to witch card is better? also curious about the 7970 but from what i gather its not as good as the 6990. Another question I had is it possible to put a 6990 in xfire with one of my current 6870s or any other card thats not as expensive as another 6990?

Or get an unlovable 6950 reference for like >250 and pair it with the 6990. That's cheaper and has the same performance.

Honestly though 2 unlocked 6950s will perform better than 1 6990 due to overlooking headroom and are cheaper.
post #7 of 22
HD 6990 is a very powerful GPU. I use it to game @ 2560x1440.
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post #8 of 22
Both cards have performances that are very similar to each other.

I went for nvidia because of 2 reasons mainly

1-) 3Dvision

2-) Nvidia drivers have better compatibility than Ati drivers in most cases when a new game arrives

When you have a 590 you will never want to OC it unless you want a E-PEEN or running really high resolutions.

Good luck finding a 590 though.
post #9 of 22
Quote:
Originally Posted by Rognin View Post

Two 580's work much better than a 590.
Personally, I'd get another 6870 and tri-fire them... cheaper solution.

You can't trifire 6870s unless there's a 6870 x2 involved. Correct me if i'm wrong.
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post #10 of 22
Thread Starter 
I read a little bit about the 7970 and the upcoming release of the 7990 sometime in the first quarter. They way I understand it is if I had 2 7970s in xfire I would have a total of 6gigs of vram but only 3gigs of effective Vram from the primary card it wouldnt give me 6gigs of vram? In the 7990 it will have 2 gpus with 3gigs of vram apiece for a total of 6gigs of vram does that mean ill only have 3gigs of effective Vram or is this 6gigs worth of vram? My thoughts are if the 7970 and the 7990 would be able to be in crossfire I would get a 7970 for now with the hopes of getting a 7990 in the future if it has the 6gigs or vram and making this my primary card if its only gonna be 3gigs of vram I would just get another 7970.

Having trouble wording the question im asking sorry it its confusing but from what i understand with my current 6870s in xfire technically i have 2 gigs of vram but I can only untilize 1 gig of it witch is why im having trouble running bf3 on ultra.
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