Tried both last night and this is what i´ve found. Computer specs: Athlon 64 X2 4200+, 2 GB RAM, DFI Lanparty UT nf4 sli-d, XFX 8800 GTS 320MB, Razer Copperhead. CONFIG A: Anti Aliasing NONE HDR MEDIUM Texture Filter ANISOTROPIC 4X Texture Resolution MEDIUM Model HIGH Shadow Quality MEDIUM Shadow Resolution HIGH Effect Resolution HIGH Effect Quality HIGH Motion Blur MEDIUM Lighting Quality HIGH Display Resolution 1280x720 Vertical Sync OFF Aspect Correction OFF Concurrent Operations 2 Concurrent Rendering ON CONFIG A Results Vista (x86) DX9 Snow 59, Cave 36 Vista (x86) DX10 Snow 62, Cave 35 XP SP2 (x86) DX9 Snow 60, Cave 39 CONFIG B: Anti Aliasing 4X HDR HIGH Texture Filter ANISOTROPIC 8X Texture Resolution HIGH Model HIGH Shadow Quality MEDIUM Shadow Resolution HIGH Effect Resolution HIGH Effect Quality HIGH Motion Blur HIGH Lighting Quality HIGH Display Resolution 1280x720 Vertical Sync OFF Aspect Correction OFF Concurrent Operations 2 Concurrent Rendering ON CONFIG B Results Vista (x86) DX9 Snow 45, Cave 30 Vista (x86) DX10 Snow 35, Cave 35 XP SP2 (x86) DX9 Snow 44, Cave 37 In Vista it freezes from time to time, and there is a huge mouse lag. I didn´t see any difference (visually) between DX9 and DX10, maybe when i get some screenshots and compare side by side

It actually runs pretty well for me, Athlon 64 3200+ Nvidia 6800GT. That said it feels so much like a console game. Everything from the gameplay to the controls just screams it. I'm sure that this could be a fun game played from couch but not on the PC. Same with RE. Just felt wrong on the PC.