im just wondering if crossfire 2 5770s(or any model video card) of different manufacturer would have issues, i have 2 5770s one having samsung memory and the other hynix
I wouldn't think there would be an issue. As far as I know, all that needs to be the same is the GPU and I think the memory size, but I'm not 100% certain if it has to be the exact same manufacturer.
It doesn't necessarily have to be the exact same manufacturer... but you should check to see if the clock speed, vram size, and if the gpu itself is the same. Better to play it safe.
As long as the clock/mem speeds are the same you should be good to go. Give it a shot. I'd think the worst it can do is not display on your monitor. Then you'll know for sure!