Allright, for now I've got this spec:
CPU: 3350P €154
MOBO: ASRock B75 Pro3-M €60
RAM: Corsair vengeance 2x4GB @1600MHZ €34
Total package: €248
I know this build can't O'C as the 3570k build I've posted earlier, but as I'm not so keen in OC'ing, I might think this new build for 248 euro's might be the best bang for buck choice I have. Suggestions for a budget gaming system with some future proof stuff, always welcome!!
Besides this, I have a new GPU in mind:
Club3D Radeon HD 7870 XT JokerCard (Tahiti LE) €213 euro's
This GFX card comes out pretty good in benchmarks @ BF3. BIG fps...
I know the 7870 LE is faster but it just doesn't make sense to buy one because it performs pretty close to the standard 7870. Both can max most games at 1080p already. That's why I said it depends on the deal you get. If prices are similar, 7870 LE is the way to go. If they're too far apart, just get the standard 7870.
If it's the zalman ZM600, it's good. If it's not, it's probably still good though.
550ti can run BF3, probably with medium settings or so.
Your new system will perform way better (around 2x or more) especially with the new CPU and video card. Motherboard don't make an impact and for games, 4GB RAM is still enough though most people opt for 8GB because it's cheap and better price/GB.