Thinking want to upgrade. Need some help. Current specs are as follow
Intel e8600
Hd4850
Biostar tpower i45
Coolermaster cm690 casing
Coolermaster 560W power supply
Wd 500gb hdd
Corsair perfomance ram ddr2 4gb

Want to upgrade. But budget around 2k. What thing should i keep and replace? I think i still wanna keep the hd4850 since it can handle alot of games though.

I plan to play game like bf3, mass effect, call of duty, company of heroes 2. It has been a while i didnt open my desktop probably around 1 year. So i have no idea if the current specs can support those games especially their sequels. I have no monitor as well but i heard dell 22-23 inch ips panel are goods. How much do they cost?