Big Download has reported on StarCraft II's final system specs for its upcoming release on July 27th. In typical Blizzard fashion, the game will be able to run on a wide range of PC's, seeing as that the current minimal system requirements are very forgiving. The minimal requirements may be raised with the release of future expansions though.

Minimum System Requirements*:

PC: Windows XP/Windows Vista/Windows 7 (Latest Service Packs) with DirectX 9.0c
2.6 GHz Pentium IV or equivalent AMD Athlon processor
128 MB PCIe NVIDIA GeForce 6600 GT or ATI Radeon 9800 PRO video card or better

Mac: Mac OS X 10.5.8, 10.6.2 or newer
Intel Processor
NVIDIA GeForce 8600M GT or ATI Radeon X1600 or better

PC/Mac: 12 GB available HD space
1 GB RAM (1.5 GB required for Windows Vista/Windows 7 users, 2 GB for Mac users) 
DVD-ROM drive 
Broadband Internet connection
1024X720 minimum display resolution

*Note: Due to potential programming changes, the Minimum System Requirements for this game may change over time.

Recommended Specifications:

PC: Windows Vista/Windows 7 
Dual Core 2.4Ghz Processor 
2 GB RAM 
512 MB NVIDIA GeForce 8800 GTX or ATI Radeon HD 3870 or better

Mac: Intel Core 2 Duo processor 
4 GB system RAM 
NVIDIA GeForce 9600M GT or ATI Radeon HD 4670 or better