Here are the system requirements for Grand Theft Auto 3 for the PC:
Minimum System Requirements:
Pentium III 450 CPU
96MB RAM
16MB Direct3D Video Card
Fully DirectX compatible Sound Card
8X CD-Rom
500MB free hard disk space
Win 98/ME/2000/XP
Direct X 8.1
Recommended System Requirements
700 mhz CPU
128MB RAM
32MB Direct3D Video Card
Fully DirectX compatible Sound Card
8X CD-Rom
500MB free hard disk space
Win 98/ME/2000/XP
Direct X 8.1
Windows NT (any version)