The 'Sapphire AMD ATI Radeon HD 6770 1GB DDR5' or the 'NVIDIA GeForce GTS450 2GB DDR3 128BIT PCI-E card FORSA'?

I am planning to replace my graphics card for better gaming within my budget.



My System spec:



System Manufacturer: INTEL_

System Model: DG41RQ__

Processor : Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz 2.93GHz

Installed memory (RAM) : 2.00 GB

System Type: 32-bit Operating System

DirectX Version: DirectX 11

Card name: NVIDIA GeForce 8400 GS

Manufacturer: NVIDIA

Chip type: GeForce 8400 GS

DAC type: Integrated RAMDAC

Display Memory: 1265 MB

Dedicated Memory: 499 MB

Shared Memory: 765 MB

Current Mode: 1360 x 768 (32 bit) (60Hz)

Monitor Name: Generic PnP Monitor

Monitor Model: SMB1930N

Monitor Id: SAM0632

Native Mode: 1360 x 768(p) (60.015Hz)

Output Type: HD15



Kindly let me know your suggestion.



Thanks!|||The 6770 wins by MILES.... its not even a decision lol

(btw video memory is not a way to buy cards, just because it has 2gb doesnt make it good).