Minimum System Requirements:
• Dual core CPU, up from a single core at 1.4 Ghz. It looks like it may mention a Intel Pentium D rather than Intel Pentium 4.
• 2GB RAM (or 1GB for Windows XP), up from 1GB RAM.
• The X1800 Pro (2005) is now the minimum required GPU, up from the 9500 (2002), which may no longer be supported.
• The GeForce FX 5000 series (2003) also has been dropped from the minimum requirements, replaced by the 6800 (2004).
• The minimum hard drive space is still 25GB.
• The minimum resolution is 1024×768.
Recommended Specifications:
• 4GB RAM, up from 2GB.
• 64bit Windows 7, up from 64bit Windows Vista/7.
• Intel Core 2 Duo 2.2 GHz or AMD Athlon 64 X2, up from the Intel Pentium D.
• Nvidia 8800GT, up from the 8600.
• AMD 4830 512MB, up from the 2600.