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Experience of CrossfireX-your thoughts please - Page 2

post #11 of 20
Quote:
Originally Posted by kiwiasian View Post
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
Disagree with all of these points (other than overclocking point, I don't personally own these setups). Used a 5850 xfire and 560ti sli setup. None had microstutter in most games I played, most scaled decently. None had heat issues, maybe 5 c hotter on both cards.
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post #12 of 20
It's ultimately what is better for you at the time. Can you afford one high end graphics card, or afford the lower end now and potentially be able to afford another lower end later that'll beat the performance of the high end card 9 times out of 10.

Personally I love running crossfire or sli for the fact that for 3 monitor gaming it gives that added power to allow me to run my games at higher quality settings at these high end resolutions.

On the grounds of uncontrollable heat there are actually a few ways to avoid this;
1) Have decent air flow in your case and don't use a tiny ass case
2) Stagger the cards, personally I run my dual card set ups in the pci-e slot 1 and 5 (3 pci-e 2.0 x16 slots) so that the primary card actually has a gap to get fresh air
3) Do not use default fan profiles, they are garbage and are not designed to handle the primary card getting a lot less air flow then in single card mode

I've never run into microstutter on the half a dozen dual card set ups I've gone with over the years, never noticed bad scaling (must have been the cards I chose aka planning ahead by reading reviews), and finally they overclocked just as well as single cards. Past 4 dual card set ups I've been able to run my cards at or near the highest possible single card clocking speeds people were able to get without bios modding.
post #13 of 20
I had some problems here an there with crossfired 4870s, but I didn't have any problems with 4890s. Not all games support it, but after taking one of the cards away I was sad. needless to say I jumped on cross fired reference 5850s after the 69XX card had been out for a while and I won't give them up for a long time.
post #14 of 20
Thread Starter 
Quote:
Originally Posted by ronnin426850 View Post
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
I was under the impression (and correct me if I'm wrong) but the HD4890 is a DX10.1 card. Also is it worth making the jump to newer gen cards for DX11, from what I have seen not that many games take advantage of it and it doesn't look leaps and bounds better than dx9 and dx10. I've seen Crysis 2 in dx11 and whilst it looks a bit better, its not a major improvement?
post #15 of 20
Yea the 4890 are DX10 cards


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post #16 of 20
Quote:
Originally Posted by kiwiasian View Post
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
Heat is always controllable, if it were uncontrollable you wouldn't have bothered with WC.
Microstutter is barely noticable if at all on higher end cards.
~95% scaling is terrible?
Running 3 cards on ~13% OC is an issue?
post #17 of 20
Currently i have 2 5770's in Crossfire and compared to my single card i was seeing about a 100% improvement going dual cards. I ran some Heaven DX11 Benchmarker and it flew through it, max everything, except tesellation was on half. It never dropped below 30, however with 1 card i got some 30's but it would also go down to like 11fps or 18fps and chug. With the two cards i was always sitting at or around 40-50fps.
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post #18 of 20
Quote:
Originally Posted by jimmyc1 View Post
I was under the impression (and correct me if I'm wrong) but the HD4890 is a DX10.1 card. Also is it worth making the jump to newer gen cards for DX11, from what I have seen not that many games take advantage of it and it doesn't look leaps and bounds better than dx9 and dx10. I've seen Crysis 2 in dx11 and whilst it looks a bit better, its not a major improvement?
Quote:
Originally Posted by Rebelord View Post
Yea the 4890 are DX10 cards


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That may be, I've owned such cards, i know. But if you take a look, you'll notice: each game has either Dx11 or Dx9 mode, not Dx11/10.

And from now on, games will be developed mainly in Dx11 with some quite ****ty Dx9 replacement.

And a single Dx11 card can outperform both 4890s with all their 4 GPUs, for 2 times less power consumption

EDIT: Crysis 2 is.. an exception of a game, nothing there is normal or standard or should be taken as a measurment
Edited by ronnin426850 - 10/11/11 at 7:56am
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post #19 of 20
I myself have been thinking of going cross fire with my 6950 2GB for BF3. I'm just worried most about noise level....
post #20 of 20
Quote:
Originally Posted by falcon26 View Post
I myself have been thinking of going cross fire with my 6950 2GB for BF3. I'm just worried most about noise level....
I doubt you will notice it when you are wasting the other team up and down the map
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