http://worldoftanks.com/en/content/guide/general/system-requirements/

Minimum:
Operating system: Windows XP / Vista / 7 / 8
Processor: 2.2 GHz supporting SSE2
RAM: 1.5 GB for Windows XP, 2 GB for Windows Vista / 7
Video Card: GeForce 6800 / ATI X1800 with 256 MB RAM & compatible with DirectX9.0c

Bet norėtųsi kažką arčiau recommended:
Operating system: Windows XP / Vista / 7 / 8 - 64-bit
Processor: Intel Core i5-3330
RAM: 4 GB
Video card: GeForce GTX660 (2GB) / Radeon HD 7850 2GB, DirectX 9.0c