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Ati Sapphire Radeon HD 4870 Crossfire problem or what?! - Page 4

post #31 of 44
Quote:
Originally Posted by MoroueA View Post
As I said I saw no difference in my Wii Emulator. It could be that my CPU is holding back my Emulator? But even on a game such as Counter Strike Source, the FPS is the same as with 1 Graphics card as apposed to Both Graphics cards.
I don't think that Dolphin supports crossfire. I could be wrong. It also won't use more than two cpu cores by the way. I don't really play css but a single 4870 should be more than enough for that game. You may very well be cpu limited there. I would try a game like Crysis. Unengine Heaven would be a good free option to test scaling.
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post #32 of 44
How about actually running SOME GAMES? Not just an emulator, but some games that you know fully support crossfire.

Or benchmarks like 3DMark 06 and Vantage
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post #33 of 44
Ok, here are your problems.


1.) Your PSU is a piece of crap. NOT causing the current problem, but I feel obliged to point that out.

2.) You have a CPU bottleneck

3.) The second card is bandwidth starved at only 4x PCIe, and that's severely impacting its performance

4.) Windows Experience Index does not utilize Crossfire, only the first GPU is used

5.) Your emulators don't support Crossfire

6.) Your monitor is only 1600x900, and that's not a high enough resolution to get the fullest out of Crossfire to begin with.



Basically you should not have gone Crossfire because A.) your system isn't really set up for it, and B.) you wouldn't be getting much use out of it anyway. There's nothing wrong with your card, the problem is that your system is about as optimized for Crossfire as GTA IV was for PC.
post #34 of 44
Thread Starter 
Ok so do I need to get a different PSU?? I will be getting the Q6600 and Overclocking it to about 3.6Ghz. I think I will trade my 4870's with one better graphics card? Btw both my GPU's are running at 8x 8x not 4x for the second one.
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post #35 of 44
Thread Starter 
***i did 3dmark06 for 1 and 2 gpus and i got the same result for both. Help!?!?!
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post #36 of 44
Do you have Crossfire enabled in the drivers? Did you install the Crossfire bridge?
post #37 of 44
Thread Starter 
I have all drivers installed, I tried 1 and even 2 crossfire bridges. Even the Catalyst control center is detecting that I have 2 GPUs. I THINK i need a better PSU... I got the same results in 3DMARK06 for 1 Graphics card and 2 Graphics cards.
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post #38 of 44
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
Do you have Crossfire enabled in the drivers? Did you install the Crossfire bridge?
Windows 7 Automatically installed the drivers for me. AMD CATALYST CONTROL CENTER shows that there are 2 GPU's running at 8x each.
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post #39 of 44
Quote:
Originally Posted by MoroueA View Post
Windows 7 Automatically installed the drivers for me. AMD CATALYST CONTROL CENTER shows that there are 2 GPU's running at 8x each.
download drivers directly from AMD/ATI site, never ever get them from Windows updater.
    
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post #40 of 44
Thread Starter 
Quote:
Originally Posted by mental.patient View Post
download drivers directly from AMD/ATI site, never ever get them from Windows updater.
I dont see any drivers for Crossfire, I already have the AMD Catalyst Control Center with the drivers for my cards.
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