Hardware Requirements
Minimum System Requirements
WINDOWS |
Windows® XP/Vista/7 (latest service packs) with DX 9.0c |
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 |
1024×768 minimum resolution |
Recommended System Requirements
WINDOWS |
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 |
http://us.battle.net/support/en/article/diablo-iii-system-requirements