In order for you to play Tomb Raider on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP Service Pack 3, Windows Vista,7,8 (32bit/64bit)
Processor (CPU):
Dual core CPU: AMD Athlon64 X2 2.1 Ghz (4050+), Intel Core2 Duo 1.86 Ghz (E6300)
Memory (RAM):
1GB Memory (2GB on Vista)
Graphics Card:
DirectX 9 graphics card with 512Mb Video RAM: AMD Radeon HD 2600 XT, nVidia 8600
DirectX®:
9.0c
Hard Drive:
12 GB HD space
Other Requirements:
Broadband Internet connection
In order to play Tomb Raider on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows Vista, Windows 7 or Windows 8
Processor (CPU):
Quad core CPU: AMD Phenom II X4 955, Intel Core i5-750
Memory (RAM):
4 GB RAM
Graphics Card:
DirectX 11 graphics card with 1GB Video RAM: AMD Radeon HD 5870, nVidia GTX 480
DirectX®:
11
Hard Drive:
12 GB HD space
Other Requirements:
Broadband Internet connection