CD Projekt RED has released the official PC system requirements for The Witcher 2: Assassins of Kings. Apparently the system requirements previously released weren’t official enough.
To accompany this news, they have also released a batch on new screenshots showing off some never-before-seen locations, as well as a deadly beast and military units getting ready for a fight.
Don’t forget that The Witcher 2 is DRM free if purchased through Good Old Games.
Miminum System Requirements
• OS: Windows XP SP2 / Windows Vista SP2 / Windows 7 (32/64-bit)
• Processor: Intel Core 2 Duo 2.2 Ghz or AMD Athlon 64 X2 5000+
• Memory: 1 GB Windows XP / 2 GB Windows Vista and Windows 7
• Video Card: 512 MB RAM, supporting Pixel Shader 3.0 (Nvidia GeForce 8800 or ATI Radeon HD3850)

Recommended System Requirements
• OS: Windows XP SP2 / Windows Vista SP2 / Windows 7 (32/64-bit)
• Processor: Intel Core 2 Quad or AMD Phenom X4
• Memory: 3 GB Windows XP / 4 GB Windows Vista and Windows 7
• Video Card: 1 GB RAM, supporting Pixel Shader 3.0 (Nvidia GeForce GTX260 or ATI Radeon HD4850)

Additionally
• Sound Card: compatible with DirectX 9.0c
• HDD: 16 GB of disc space
• Disc Drive: DVD x8, compatible with DVD9
• Installation requires administrator access.
• Game supports Xbox 360 controller for Windows.
System requirements for laptops may differ slightly due to differences in hardware efficiency.

All entirely reasonable then, unless you are stuck in 2005.
Head on over to the screenshots section to check out the new Witcher 2 screens.