best vga card

[ghost buster]

hi guys,
i want to buy a new gpu and i have SLR 22500.
what is the best gpu

gtx 650 ti
gtx 750
gtx 650

 

[Suztera]

What is your current pc specs?
Power supply?
Budget?

 

[ghost buster]

intel core 2 duo
6gb ram
450w psu

sri lankan rupees 22500

 

[Suztera]

intel core 2 duo
6gb ram
450w psu

sri lankan rupees 22500

What power supply brand and model is it?
A 750Ti would be fine.