Packard Bell ipower G5800 GPU Upgrade

[Phoenix7175]

Hey folks, was wondering what the best upgrade for my Graphics card would be.
Computer specs:
Packard Bell ipower G5800
Intel i7
Windows 7 64bit
8gig RAM
It has 450w PSU
Current factory fitted GPU is Geforce GT330 2Ghz
I have 1920x1080 HD Monitor
Was thinking of getting the GTX 560, would this fir and work well with comp?
Thanks for ur help!!!

 

[DM186]

Ok the Min System requirement for GTX 560 is 450w. Now if your PSU is generic brand you will not get the 450w you need. Now on the GTX 560 ti's it requires a 500w PSU or more.