Considering that the SFIV arcade cabinet runs on a Taito Type X2, it's more or less already ported to the PC. If they screw up the home release, I'd be surprised.
http://www.eventhubs.com/guides/2008/ju ... fighter-4/
Taito Type X2
* OS: Microsoft Windows XP Embedded SP2
* CPU: Intel Core 2 Duo E6400 (Capcom confirmed it's a dual core processor in their arcade units)
* Chipset: Intel Q965 + ICH8
* Monitor: 720p/1080p/1440p HD LCD Monitor
* RAM: DDR2 667/800MHz (512MB/1GB, up to 4GB)
* GPU: Capcom stated their SF4 arcade units use a Geforce 7900 GS card.
* Sound: Onboard Realtek HD 7.1 channel Sound (supports add-in sound cards)
* LAN: 10/100/1000 BASE-T
* I/O ports: 1x JVS, 4x USB 2.0 (up to
* Audio inputs: AKG C535EB Stage Microphone, line-in (Surround 7.1)
* Audio outputs: 7.1, SPDI/FX
* Expansion Slots: 1x PCI Express x16 (used by video card), 1x PCI Express x4, 2x PCI
* Storage: 2x 80 GB 10k RPM SATA Hard Drives
* Media: 80 GB 10000 rpm Hard Drive