Updating my Computer (Upgrade CPU?)

JackWills

Honorable
Dec 10, 2013
2
0
10,510
I've recently realized that my computer is rather old and would like to upgrade it.

I'm currently running with:
AMD Anthlon II x2 270 Prcessor
4GB Ram
GeForce GTX 650

I'm afraid I have limited tech knowledge so was just wondering, which of these would be the best to upgrade? As in which one of these needs updating the most.
As well as picking which one to upgrade, I would also appreciate suggestions on how to upgrade it, (i.e. if the CPU needed upgrading, a suggestion for a good CPU which is compatible with my system)

I'm not quite sure how to check for compatibility either so any help with that would be appreciated.

Thanks,
Jack.