Need help upgrading my computer!!

Samhasnuts

Honorable
Nov 2, 2012
1
0
10,510
Hello,
I have recently gotten hold of an Asus PC with an
M3N78-VM Mobo,
4GB DDR2 Ram,
Nvidia GeForce 8200 Onboard
Windows 7 64bit
and an Amd Phenom 9650 Quadcore CPU.
It is running certain games rather well but struggles on the more intensive games like Battlefield 3. I have no idea how to even start going about upgrading this thing but I would like around 30 FPS on modern games. I've got a budget of around the £250 mark and need some help knowing what to do. Thanks, Sam