what to upgrade?

izize

Honorable
Apr 7, 2013
1
0
10,510
hey,
I'm thinking of upgrading my pc with a budget of around 400-600 euros. I'm not sure what to upgrade because i'm avraid of bottlenecking my pc.
my specs are:
processor: 2,67 gigahertz Intel Core i7 920
graphics card: NVIDIA GeForce GTX 260 [Display adapter] (2x)
mainboard: Intel Corporation DX58SO AAE29331-404
powersupply: real power m1000 (1000w)
RAM: 4GB
Hard drive: 2TB
Bought this pc roughly 5 years ago.