Best graphics card for system test

[dan271828]

Hello,
I just bought an hp h8-1212 computer and was wondering what is the best graphics card I could upgrade toÉ

 

[deadlockedworld]

In order for us to help you will need to post full specs - including power supply.

Edit:
-Also when you say "best" what kind of price range are we talking?
-And let us know if you are willing to consider replacing your power supply. That will be the limiting factor in this decision.