Need help choosing the right vcard for my system

[justdlnow]

Hay there. I currently want to upgrade my GT520 vcard for a new one which could run smoothly games like Bioshock Infinite, BF3/4, Metro Last Light/2033, Crysis2/3. Having like 35-50 fps for these games is just fine, in other words, no noticeable lag at Medium to High settings.

Specs for this system are(I could overclock my CPU if is possible with current setup)

Mobo: http://www.foxconnchannel.com/ProductDetail.aspx?T=Motherboard&U=en-us0000224
(Foxconn MCP61VM2MA-RS2H)
PSU: Corsair CX430
CPU: DualCore AMD Athlon 64 X2, 2600 MHz 5000+ (Brisbane)
HDD: 1xSATA 250GB

I'm aware of the oddly system I'm running here, and I know most will think I just should upgrade everything instead... in poor words, I'm mostly worried about finding the performance/required power balance...

Thanks.

 

[LukaBoki]

You will need an entirely new build if you want to play games like BF4,Metro Last Light and Crysis 3.

 

[justdlnow]

You will need an entirely new build if you want to play games like BF4,Metro Last Light and Crysis 3.

Ah no hope..

 

[LukaBoki]

What would be the max amount of money you can spend on a PC? It doesn't have to be now,but when you get that kinda money.