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Experience of CrossfireX-your thoughts please

post #1 of 20
Thread Starter 
I have run a single HD4890 gpu for the last two years, along with a phenom x4 965 and 16GB DDR3. The only game I've ever had to tone down on detail to get decent frame rates is Crysis and Crysis Warhead (was getting around 20fps avg on the highest detail settings). Recently I got my hands on a second HD4890 from a friend for free and have crossfired it. Testing with Crysis shows a big improvement with fps going up to just under 40 avg at highest detail settings. As other games were playing fine before its hard to notice much difference. I game at 1920x1080 so I guess if I moved to a high res monitor it would show(I'm not planning on buying a new monitor though). Just wanted to know how other people got on with crossfire and whether they think its worth it. Despite my second card costing me nothing the jump in power used is a lot. It seems a bit of a waste having a second gpu just eating electricity if I'm not really seeing any benefit from it. Any thoughts welcome.
post #2 of 20
I personally like crossfire.

Sine the 5770, I've purchased cards with crossfire in mind. I don't get the biggest paychecks, so when it's time for me to upgrade, I buy a card one month, then another the next/two.

Both the 5770 and 6950 I have scale very good. Nearly 100%.
Of course it all depends on the application you use it for. BC2 was a game that I noticed great scaling in. Also drivers, aren't an issue for me, as many say are.
    
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post #3 of 20
I just don't like the fact that AMD has crossfire driver issues. Yeah it eventually gets fixed with newer drivers but I personally prefer single cards. Added power usage and heat doesn't help either.
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post #4 of 20
Crossfire? Just don't do it...

Hardware level grievances:
-uncontrollable heat (and as such I have WC now)
Software level grievances:
-microstutter
-terrible scaling
-overclocking issues
post #5 of 20
I found that 4890 xFire doesn't have the power for really pretty new games like The Witcher 2 as I got horrible FPS in the final fight of that game. I do like the concept of crossfire, though I've had enough of their frustrating drivers. If you don't play hard right now take it out of your rig and save the power, then when you need the performance throw it in again.
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post #6 of 20
Quote:
Originally Posted by calavera View Post
I just don't like the fact that AMD has crossfire driver issues. Yeah it eventually gets fixed with newer drivers but I personally prefer single cards. Added power usage and heat doesn't help either.
Thats funny because my temps remained exactly the same when I crossfired my system. 35-37c idle and 58-61c max load on air. I will agree with the extra power part.
    
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post #7 of 20
CFX wasn't bad, but it wasn't for me. I ended up moving back to a single card recently because I need the space on my motherboard and I was tired of the heat/noise/power
    
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post #8 of 20
Quote:
Originally Posted by jimmyc1 View Post
I have run a single HD4890 gpu for the last two years, along with a phenom x4 965 and 16GB DDR3. The only game I've ever had to tone down on detail to get decent frame rates is Crysis and Crysis Warhead (was getting around 20fps avg on the highest detail settings). Recently I got my hands on a second HD4890 from a friend for free and have crossfired it. Testing with Crysis shows a big improvement with fps going up to just under 40 avg at highest detail settings. As other games were playing fine before its hard to notice much difference. I game at 1920x1080 so I guess if I moved to a high res monitor it would show(I'm not planning on buying a new monitor though). Just wanted to know how other people got on with crossfire and whether they think its worth it. Despite my second card costing me nothing the jump in power used is a lot. It seems a bit of a waste having a second gpu just eating electricity if I'm not really seeing any benefit from it. Any thoughts welcome.
If your cards are 1Gb or less, you'll run out of vRam if you try higher resolution (resulting in 5fps, no matter how many GPU cores you have crossfired).

If I was you, I'd sell those cards and get a single Dx11 solution, because you won't need all that processing power with newer games, if you can't run them in Dx11. Or even if you do, it's not worth all that PSU load for Dx9 graphics.

Also, look for 1.5Gb or 2Gb vRam versions
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post #9 of 20
Thread Starter 
Thanks for the input. I forgot to mention that I'm also have driver issues. I found that in Dirt 3 I get bad flickering in menus and even in older games such as NFS SHIFT 1 I get flashing and stuttering in the cockpit view. I think the advice to keep the card on the shelf and then drop it in when needed might be the best idea.
post #10 of 20
I still love my xfired 4890s. With BF3 on ultra was ~30 fps. However just bumping down to high they would maintain 40+. Ya not the greatest. But they still have some power to them.
Remember the 4890 scale decently in xfire. And are full 256bit cards. With 1G ddr5. Still can hold there own for being almost 3 gens behind


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