just make sure you have a PSU that can power those things.
and a CPU that can keep up with it.
and RAM that can keep up with the CPU while its trying to keep up with the GPU's.
I knew a guy who had (back in 2004 or 2005 one of the two)
He had a brand new x800 Pro (nice video card back in the day)
He had a dual cpu setup (two really weak cpu's)
and 256mb RAM.
Can we say bottlenecked? He finally upgraded to 2GB RAM, still... His CPU's were weak. Better Performance with the RAM upgrade, but you can tell he was not tapping into the potential power of the video card.