Mobo: Shuttle AN 35
CPU: AMD Athlon XP 2200+ (1.8 Ghz)
RAM: 1.5 GB PC 2100
Video: ATI Radeon 9550 256 MB
Sound: nForce 2 w/ headphones for now...

OS: WinXP SP2
Silent Hunter 3 v1.4b (US DVD) w/GWX 2.0
Dangerous Waters v1.04 w/LWAMI 3.08
Silent Hunter 4 v1.4 (US DVD) w/NSM 3.3, RFB 1.4 RC1, RSRD 115
About 15 fps in external looking 3d views (periscope, bridge, free cam, etc). 20-30 fps in the Command room, crew/damage/torp management, attack map and anything else I forgot (aside from the nav map). Up to 100 fps or so in the nav map depending on TC, weather, 'nearby' stuff that I haven't detected, etc. With my machine I can't really run faster than 1024x TC comfortably.