Question: what are the system requirements for portal?
Answer: CPU: Pentium 4.
RAM: 1 GB.
OS: Windows 7 (32/64-bit)/Vista/XP.
VIDEO CARD: DirectX 9 level Graphics Card (GeForce FX 5500/Radeon 9500)
PIXEL SHADER: 2.0.
VERTEX SHADER: 2.0.
DEDICATED VIDEO RAM: 64 MB.