Phenom II X4 Update

Hello everyone!

I have a Dell Dimention C521 Tower with an AMD Sempron 3400+ (1.8Ghz) CPU. I want to upgrade to the highest CPU the board will support. One option i found is Phenom II X4 920 (2.8)Ghz. Please tell me if anyone has tried something like this, or knows something about it  

Here is my specs:

BIOS: Phoenix - Award WorkstationBIOS v.6.00PG
Socket: AM2 (I am aware that AM+ is also backwards compatible)
PSU: Current is ~250w, I can upgrade if needed.
Memory Bus: Supports DDR2 RAM (hense the AM socket)

I want to know that the processor I purchase will work on my board before I put it in.



Thanks a bunch!