I'm going to upgrade my gpu to ATI sapphire HD7850....
my current rig is:
PSU-Cooler Master eXtreme power 460W
CPU Athlon II X4 620
MOBO- Gigabyte GA-MA770-UD3
GPU- ati radeon hd5550 1GB 128bit
OPTICAL DRIVE- SONY DVD RW
CPU NOT OVERCLOCKED
Need reply ASAP....
Yes it can. I was running this GPU with Athlon II X3. I just upgraded my CPU to FX 8320 and my FPS (frames per second) more or less doubled. So although it can run it. you wont get the best out of the card