If you go for recommended requirements for War Thunder for Windows, your operating system should be Windows 7 64bit /Vista 64bit /8 64bit /10 64bit. Recommended CPU would be Intel Core i5 CPU or equivalent. For RAM, it is recommended to have 8 GB or more. And video card — NVIDIA GeForce GTX 960 or higher, AMD R9 280 or higher (DirectX 11 level video card and drivers). It should also support Direct X Version 11.
If you’re on Linux, minimum requirements include Most modern Linux distributions, SteamOS. Processor should be Dual-Core 2.4 Ghz or higher. For RAM you need 4 GB or more. Graphics card should be NVIDIA 660 with latest proprietary drivers (not older than 6 months) / similar AMD with latest proprietary drivers (not older than 6 months; the minimum supported resolution for the game is 720p) or better. 12 GB of free disk space is a must.
War Thunder is the most comprehensive free-to-play, cross-platform, MMO military game for Windows, Linux, Mac and PlayStation®4 dedicated to aviation, armoured vehicles, and naval craft from World War II and the Cold War.