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x-fire 6990 owners: are you happy?

post #1 of 46
Thread Starter 
so I'm planning on buying two 6990's soon and I'm curious...
  1. Are you guys happy with your GPU setup?
  2. How is the gaming experience? You having any issues with games running smoothly/crashing?
  3. What's the average PSU that you use/ do you know what your power draw is?
  4. If you're air cooling: How is the noise? If watercooling: How bad is the heat dump in your rad? is it on cpu loop? if so how's the impact?



Thanks for your time. Useful and thought out answers will get +1
 
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post #2 of 46
If you REALLY need more power than the 6990 can deliver...have you considered 3x6970?
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post #3 of 46
http://www.tomshardware.com/reviews/...e,2878-14.html

Doesn't look like quad-fire scales so well. At least not warrantying another $700... Maybe it'd be better with multiple displays/eyefinity.
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post #4 of 46
Crossfire scales great (even better than SLI) for the second GPU, but you get noticeable diminishing returns when you add a third. See the benchmarks below and then imagine if you add a fourth GPU. Personally, I would go 6970x3 or 6990+6970 and stop at 3 GPUs. If you have money to throw away and want the 5%-10% more performance from that last GPU... go ahead.

post #5 of 46
No need to go quad, there's little point buying two 6990's unless your a benchmark freak.

I'm very happy with my setup
    
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post #6 of 46
Thread Starter 
Quote:
Originally Posted by JCPUser View Post
Crossfire scales great (even better than SLI) for the second GPU, but you get noticeable diminishing returns when you add a third. See the benchmarks below and then imagine if you add a fourth GPU. Personally, I would go 6970x3 or 6990+6970 and stop at 3 GPUs. If you have money to throw away and want the 5%-10% more performance from that last GPU... go ahead.

How does Crossfire scale with the 6990's though... I'm trying feeverishly to find how it scales at 1080p and 1440p with games like BC2, Crysis 2, Metro, etc

Quote:
Originally Posted by ttoadd.nz View Post
No need to go quad, there's little point buying two 6990's unless your a benchmark freak.

I'm very happy with my setup
I don't care for benchmarks. I love my eye candy and AA though. And its gotta be fast, 100 FPS or more makes me happy.


Quad fire isn't economical, but I'm looking for is it really worth while? Cost isn't really an object but I don't wanna spend another $850 (watercooled) on a second GPU I probably don't care to have around if the drivers aren't going to allow it to shine.
Edited by TitaniumClocker - 4/27/11 at 4:06am
 
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post #7 of 46
A single HD 6990 4GB is quite plentiful for the 2560x1440 res you plan on. It's got enough video memory to crank the settings and AA up. Tri-fire is where it's at, though. HD 6990 + HD 6970 would be a better choice. Quadfire scales pretty bad.
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post #8 of 46
Quote:
Originally Posted by TitaniumClocker View Post
How does Crossfire scale with the 6990's though... I'm trying feeverishly to find how it scales at 1080p and 1440p with games like BC2, Crysis 2, Metro, etc
Worse. A lot worse.

If 3 6970s get 244%, 4 would get ~275%.

So, you're paying for 4 and getting less than three.

And mind you this is just an average. It could be up to 400%. It could be down to 200%.

So go read some benchmarks and see if the games you're interested in scale well or not.
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post #9 of 46
Tri-Fire is the sweet spot right now. 6990+6970 is working great and scaling well. And 3X6970 is not better then 6990+6970, since you can OC the 6990 HIGHER then 2 separated 6970. And yes I know, since I have a 6990 and 2 X 6970 at home, and the 6990 cores can clock much HIGHER then the 6970 cores.

It's not the 5970 vs 2X5870 anymore... People get stuck in the past sometimes...

Go read this review on HardOCP to see how a 1000$ 6990+6970 set-up is totally raping a 580 SLI set-up for the same price. Their apples-to-apples is unique and really useful.

Take 15 minutes of your time and read that review fully. It's worth it.

http://www.hardocp.com/article/2011/...rifire_review/

Quad-Fire is not so great right now, but people often forget that the 6990 is new, and still working with beta drivers since it's so new, just like the Nvidia 590, also working with beta drivers. So take the ''benchmarks'' and scaling made in the last month with a grain of salt.

Quad-Fire will get better. But 6990+6970 is a better choice right now. Totally raping Nvidia 580 SLi for the same price. At 2560X1600, you will be able to use 8AA in everything, while the 580 SLI will totally choke...

With 6990+6970 instead of 3X6970, you can also use a spare Nvidia card for PhysX in your third PCIe slot.
    
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post #10 of 46
I don't actually own one

Pros/Cons as compared to dual 6970's or 6950's unlocked

Pros:
Low power consumption
Easy to quadfire
5 displays
4GB
You can say you have a 6990
Price

Cons:
LOUD
Lots of heat
Preformance not as good as 2 6970s


Hope this helped.
    
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