Wow system requirements

Minimum requirements

• Intel Pentium 4 1.3 GHz or AMD Athlon XP 1500+
• 1 GB or more of RAM
• NVIDIA® GeForce® FX or ATI Radeon™ 9500 video card or better

Suggested requirements

• Dual-core processor, such as the Intel Pentium D or AMD Athlon 64 X2
• 2 GB RAM
• 256 MB NVIDIA® GeForce® 8600 or ATI Radeon™ HD 2600 or better

http://us.battle.net/support/en/article/minimum-system-requirements-for-world-of-warcraft