|hey man this is GTA 4's minimum system requirments:|
GTA 4 Minimum System Requirements:
Processor: Intel Core 2 Duo 1.8Ghz or equivalent AMD Athlon X2 64 2.4Ghz
Memory/RAM: 1GB for XP and 1.5GB for Vista
Video Card: 256MB NVIDIA 7900 or 256MB ATI X1900
Hard Disk Space: 16GB free
Operating System: Windows XP SP3 or Windows Vista SP1
The GF 7900 is really old.
The i5 Is a good processor(way better than the core 2 quad)
You've got 4 GB Ram Which is 2GB more than the minimum requirment
Your PC meets the minimum system requirments for GTA IV.
AND YOU CAN RUN MAFIA 2 too.
BUT DISABLE ANTI-ALIASING.It cuts your Frame rates by half for a little more quality.So if you get 50 fps without Anti-Aliasing you will Get 20 fps with Anti-Aliasing.
HERE IS PROOF IT WILL RUN:
GTA 4 on HD 5450: http://www.youtube.com/watch?v=qU5v...
MAFIA 2 on HD 5450: http://www.youtube.com/watch?v=LwoL...