Your computer can run GTA 1 and 2 without any problems. GTA 3 needs additional processing power based on the following system requirements.
Pentium III 450 CPU
16MB Direct3D Video Card
Fully DirectX compatible Sound Card
500MB free hard disk space
Direct X 8.1
If you have a capable video card which meets the above requirements, you can play GTA 3. Anything above GTA 3 requires modern hardware to run properly.