well my spec are :
AMD Athlon 64 (2.40 GHz)
nVidia 8500GT 512 MB Video Card
1GB RAM
160GB HDD
(PS! , i can ever run GTA IV with lil lag, why should be that game problem for my comp...)
Recommended System Req's for game:
System: 2 GHz or faster or equivalent
RAM: 512 MB
Video Memory: 64 MB
Hard Drive Space: 3500 MB