Tomb Raider will be back soon - November 18th (US) / 21st (EU) - and the we got the system requirements. You can easily compare your system to these requirements using the Game-o-Meter. Oh, and don't forget to check out the demo, available now.
Tomb Raider: Underworld Minimum System RequirementsOPERATING SYSTEM: Microsoft Windows XP / Microsoft Windows VistaCPU: Intel Pentium 4 3.0 GHz+ or AMD Athlon 2.5 GHz+RAM: 1GB (Windows XP) / 2GB (Windows Vista) system memoryGRAPHICS: NVIDIA GeForce 6 series 6800GT (or better) / ATI 1800XT (or better)HARD DRIVE: 8 GB Free SpaceINPUT DEVICES: Keyboard and mouseTomb Raider Underworld Recommended System Requi 20d4 rementsOPERATING SYSTEM: Microsoft Windows XP / Microsoft Windows VistaCPU: Intel Core 2 Duo 2.2 GHz or Athlon 64 X2 4400+RAM: 2 GB system memoryGRAPHICS: NVIDIA GeForce 9800 GTX or ATI HD 4800 seriesHARD DRIVE: 8 GB Free SpaceINPUT DEVICES: Microsoft Xbox360 ControllerI'll fancy a guess that mouse + keyboard will once again be a better way to steer Lara around, just like it was with Tomb Raider: Anniversary, so take that pad recommendation as related to the "Games for Windows" badge that requires any GFW-labeled game to support the pad.