The system requirements for Blizzard's Diablo III are as follows:

Minimum for PC:

• Windows XP/Vista/7 w/ DirectX 9.0
• Intel Pentium® D 2.8 GHz or AMD Athlon™ 64 X2 4400+
• NVIDIA® GeForce® 7800 GT or ATI Radeon™ X1950 Pro or better
• 1 GB RAM (XP), 1.5 GB (Vista/7)
• 12 GB available HD space
• DVD-ROM (required for retail disc versions only)
• Broadband Internet connection
• 1024x768 minimum resolution

Minimum for Mac:

• Mac® OS X 10.6.8, 10.7.x or newer
• Intel® Core 2 Duo
• NVIDIA® GeForce® 8600M GT or ATI Radeon™ HD 2600 or better
• 2 GB RAM
• 12 GB available HD space
• DVD-ROM (required for retail disc versions only)
• Broadband Internet connection
• 1024x768 minimum resolution

Recommended for PC:

• Windows® Vista/7 (latest service packs)
• Intel® Core 2 Duo 2.4 GHz or AMD Athlon™ 64 X2 5600+ 2.8 GHz
• 2 GB RAM
• NVIDIA® GeForce® 260 or ATI Radeon™ HD 4870 or better

Recommended for Mac:

• Mac® OS X 10.7.x or newer
• Intel® Core 2 Duo
• 2 GB RAM
• NVIDIA® GeForce® GT 330M or ATI Radeon™ HD 4670 or better