Official System Reqs out today:
Required
OS: Windows Vista/XP
Processor: 3GHz Pentium IV
RAM: 1GB RAM
Video Card: Shader Model 2.0 and 128MB RAM: NVIDIA GeForce 5800 or ATI 9800
Recommended
Processor: Intel Core 2 Duo 2.4 GHz (E6600) or better
Vdeo Card: NVIDIA GeForce 7950GX2 or better
RAM: 2GB or more
Enhanced for: DirectX 10, 64-bit processors, multi-core
Supports Parental Controls on Windows Vista
Not too much of a power whore in my opinion.
Age Of Conan: Hyborian Adventures