Which Gpu will be best for Intel Core 2 Extreme qx9650?

[saif magdob]

My system specs:
Cpu- Core 2 Extreme qx9650 @3.0Ghz
Mobo- Asus Rampage Extreme X48
Ram- Corsair 8gb Ddr3
Psu- Corsair CX750M
resolution- 1080p

 

[SkyNetRising]

Something like GTX 950,GTX 960.
GTX 970 probably would be too much for it.