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The bullet has been bitten [2nd 6950]

Iirc, xfire clocks should both be the same, if ones different the driver then has to underclock one card which has already been oc in the first place.

When I was trying to apply profiles when oc testing, it was doing the same thing, it wasn't going higher than stock. I had to restart pc and switch off afterburner at startup, reset and re-save the oc settings to get the profiles to work again. Similar symptoms to what you are getting.

Remember Afterburner is still in beta.

Are you using the 2.1 beta 7? Have you applied the oc at startup? I seen a post (sorry but I can't remember where it was) on how to delay Afterburner from starting straight away when powering up. This may/not help.

Just a suggestion but maybe you should try the cards at stock for a while before letting loose on oc's. They must be tearing most games to bits as they are.

Remember you have already released extra performance in the first place by unlocking them. You stated earlier that you are a bit new to oc'ing, and xfire is a different kettle of fish than just a single card setup.

Personally, if I was in your situation I would be testing oc's on each card on their own to see what clocks they are stable at. One card may be much better and more stable than the other one. Then this would give you an idea on what kind of oc might be achievable in xfire.

When I had sli, when it worked it was phenomenal, when it didn't it was very frustrating and drove me absolutely mental.
 
Yes I've been trying to clock them the same and only a fraction over ccc limits just to get it working

I have a 10 second delay already, I may try and extend this, and yes I'm using that version

The reason I'm after the overclock is metro, I'd just like to play it on max settings, this would be fine if I could turn aa off in it but I can't, still I still feel I should be able to oc the cards

The best result is when a fresh boot of windows followed by applying overclock
Both cards then work except card 2 does the annoying gpu full usage thing thus making it unviable, but the correct clocks do show, its just soon as I launch gpu z (got an unbeknown reason) the load goes but do do the clocks ... The solution must be avoiding the gpu 100% usage?

I can see why people only do dual card setup once!
 
Do you have the "Syncronize settings for similiar graphics processors" checked in the AB>Settings>General tab?

What is the default V (from AB) for GPU 1 & GPU 2? Are you first selecting the GPU from the ^ Settings page before changing settings from the AB front page.

Did you re-install the driver after you changed the BIOS on the cards?

Crossfire is ebabled in CCC?
 
Default v is 1.0 in afterburner, I have done all those things thanks tho, I've tried not having synchronized and just adjusting both card s too, no luck there either.

One thing I've seen is to just keep trying to uninstall and install drivers, it fires seem an unfixed bug atm , and worse still, random
 
Sucess! ..partially!

i reinstalled everything,
after uninstalling i kept getting BSODs from atikmdag.sys so had to boot into safe mode and sort that,
the did the reinstall,
used msi to OC the 2 cards equally [just a bit], got the same annoying GPU usage spike on card 2, used gpuz lke normal to stop it, this time the memory clock stayed and the core downclocked like it should in 2d so i booted up crysis warhead to test the clocks in game, it spiked both cards up but them didnt use card 2 at all, dont know why, must be a reason for that
tried metro instead, maximum settings at 2560x1440 dx11 AAA etc, both cards clockd up and were being fully utilised

with this im going to need to boot up GPU-z everytime my PC boots [but with a delay bigger than AB] to avoid the gpu usage spike..

will this command method work [delay of 60 seconds]

Put the commands into a batch file which you store in your Startup folder:
ping localhost -n 60 > nul
start /b "" /d"C:\[program path]
Click to expand...

also cards are fine at this OC setting..saying this i bet this wont work tomorrow lol

why isnt crysis warhead using both cards? crysis [not warhead] did this too in benchmarks]
 
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thanks for that, i figured out why crysis wasnt using both gpus, it seems all applications in windowed mode only use 1 gpu, including heaven.. on full screen they use both

getting scores of between 2100 and 2200 with just one run on heaven with the 1080p dx11 4xAF etc that others use, and thats with 1.11v 880/1380 with temps always sub 70C , ive stopped there for now just glad its working! :) tbh i will probably only use these settings for games like metro and Crysis [most games just dont need it] good to know it works :)

no artefacts and only a couple of BSODs need to see what causes those,
 
yes having to load gpuz isnt really an issue to me, but only with you guys' help! really wouldnt have managed it otherwise.. i was never going to go back to nvidia! lol.. ive also learnt a lot.. saying it was fun? thats pushing it!
 
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