The True version of DMC4 just came out yesterday for PC (it's not a port), and looks to be quite optimized and with several improvements and new modes:
up-to 120 fps (if your rig can handle it)
Improved visuals (Both DirectX 9 and DirectX 10 support)
**Turbo Mode (20% game speed increase, must be switched to on (this is -the awesome- btw, and should have been the games normal speed in the original console release)
**Legendary Dark Knight Mode (game goes dead rising-engine on your ass by increasing enemy count and difficulty)
Some pics (right-click on them to view in full glory)



There is also a Demo of DMC4 PC, which has a great benchmark program that will evaluate if your PC can run DMC4 at whatever settings (the third pic is from the Demo). Here's some links for the Demo:
http://www.gamershell.com/download_27216.shtml
http://files.filefront.com/DevilMayC.../fileinfo.html
System Requirements:
Minimum System Requirements
OS: Windows XP/Vista
Processor: Pentium 4 @ 3 GHz
Memory: 512 MB (1 GB for Vista)
Hard Drive: 8 GB Free
Video Memory: 256 MB (nVidia GeForce 6600 SM3 Required)
Sound Card: DirectX Compatible
DirectX: 9.0c
Keyboard & Mouse
DVD Rom Drive
Recommended System Requirements
OS: Windows XP/Vista
Processor: Intel Core 2 DUO
Memory: 1 GB (2 GB for Vista)
Hard Drive: 8 GB Free
Video Memory: 512 MB (nVidia GeForce 8600)
Sound Card: DirectX Compatible
DirectX: 9.0c or 10
Keyboard & Mouse
DVD Rom Drive















