run GPUz, and start up some games. See if you can monitor both cards and see the GPU utilization go up on all 4 cores. If that doesn't work, the it might be as simple as just uninstalling and reinstalling the drivers to get them both going. You might even try going to the 10.3 Beta drivers.
yes device manager sees both cards..the same way it saw my 4870x2's , as 4 cards.. and the option to crossfire IS there, just doesnt let me enable it?
I figured either do a clean driver install OR the crossfire cable coule be bad..but Im guessing its software..
also,does crossfire not work in eyefinity? ive read different postings about that that some do and some dont.
Well, thats a little odd... What types of frame rates are you getting? Also- are you monitoring your GPU's with something like GPU-z to see what your GPU loading is like? That way at least you can see if you are actually using all 4 GPUs.
As far as the new games and cross/finity go, I really couldn't tell you, but I imagine that most new games will be much more likely to be compatible than current or older games.
I believe it will work the same at this point as crossfire with 2 cards- AFR (alternate frame rendering), which means the gpu's render frames in sequence. In a dual GPU setup, every other frame is rendered by one GPU, and the odd frames by the second GPU. In a 4 GPU setup I would guess that each GPU will render every 4th frame. (I'm not totally positive, but this is my guess).
You would probably want to run without Eyefinity on so you can see your monitoring programs yes, but you can probably also do it by having GPU-z refresh in the background, then alt-tab out of the game and see if the GPU's were all loading, or if just one or 2 of them was loading.
Pnico- sorry about that, didn't realize they only had one crossfire bridge connector. just thought it might have been worth a try. (Just working through the things I would try if I had that setup). Not sure where to go from there- I'm kinda at the end of my knowledge here when it comes to crossfireX and multi-GPU setups as I've just gotten mine and its been relatively trouble free.
finni, get this..I attempted ot play bad company 2 in crossfire and it actually performs worse
This is a common problem, the thing is that you're motherboard doesn't have enogh bandwith to support 4 GPUs and have them all run at 8x 8x 8x 8x, Intead it's going at 8x 8x 4x 4x or something like that.