sand_man
Honorary Master
If won't do much for gaming performance though and I'm sure the PSU will handle it, I could be wrong so get another opinion.
Don't game at all so not an issue in this case.
Update: Looking at your motherboard specs you already have a slot for crossfire, then all you need to do is look for a second hand 4800 series card. You can look/request one here: http://www.carbonite.co.za/
Your motherboard specs: http://za.asus.com/Motherboards/Intel_Socket_1156/P7P55D_LE/#overview
Thanks for that!!