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Drastically lower performance with Crossfire - Page 2

post #11 of 14
A note about application profiles, they are included in all the 13.x driver releases; the CAPs available for download from AMD are older and not necessary.
Quote:
Originally Posted by Ryinator View Post

Should different PCB versions be a concern, or does one BIOS fit all?

One BIOS does not fit all, and flashing the wrong BIOS for your PCB can lead to worse issues.
Quote:
Originally Posted by Ryinator View Post

I apologize for the week-late response, I've been trying to fiddle with different methods of flashing BIOS versions to both my graphics cards, but I've had no luck. ATIflash keeps giving me the error "0fl01" saying that the write failed, regardless of whether I use the -f flag when flashing, and I unlocked the BIOS beforehand as well. I tried taking the BIOS from both cards and flashing them onto each other, and tried the BIOS from the link I had earlier on the older card, but nothing has worked, they've all returned the same error. I'm stuck, and I very much believe that the BIOS mismatch is the cause of my issues. If anybody knows of any way to fix this, it would be very much appreciated!

If using the -unlockrom switch on the card before attempting to force flash still isn't allowing you to flash the BIOS, I'm not sure what the issue is. I can flash almost anything to my cards, including things that aren't remotely even BIOSes.

Also, if your cards are different PCBs, you probably don't want them using the same BIOS, you just want the same clocks.

I'd recommend completely disabling ULPS, manually OCing each card to the same speeds, forcing them to those speeds at all power states, if necessary.
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post #12 of 14
Thread Starter 
Well, I ended up giving up on flashing the cards as there seems to be no way atiflash will let me get things to work. (Which is probably a good thing I suppose, I'd rather that than a bricked card) I instead went and re-installed the drivers I had previously completely deleted, except with only one card inserted. Then I shut down, inserted the other card and connected the bridge, booted up, enabled crossfire, and what do you know, things work smoothly again! except for some reason, Tomb Raider still doesn't detect that I'm running Eyefinity while crossfire is enabled so isn't playable, but I'll chalk that up to driver issues. Bioshock Infinite, on the other hand, runs at around 30FPS on Ultra in 5760x1080, so I think things are working out!

Blameless, would you be able to point me to a way to overclock graphics cards individually? I can't find an option in Afterburner, but perhaps I'm not looking in the right place!
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post #13 of 14
Are you checking GPU usage with MSI AB during game play? I also have a felling the CPU is holding you back somewhat.
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post #14 of 14
Quote:
Originally Posted by Ryinator View Post

Blameless, would you be able to point me to a way to overclock graphics cards individually? I can't find an option in Afterburner, but perhaps I'm not looking in the right place!

The same OC settings for each card should be ideal in CFX, but if you want to set them individually you can do this in MSI AB by unchecking "Synchronize settings for similar graphics processors", and using the drop down menu to switch between GPUs. Both options are on the first tab in MSI AB's settings.
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