Seriously, I looked at the specs:

OS: Microsoft Windows XP Embedded
CPU: Intel Core 2 Duo E6400／Pentium 4 651／Celeron D 352 (up to latest Core 2 CPUs supported by the chipset)
Chipset: Intel Q965 + ICH8
Monitor: 720p/1080p/1440p HD LCD Monitor
RAM: DDR2 667/800MHz (512MB/1GB, up to 4GB)
GPU: PCI Express x16-based graphics. Support cards include ATI RADEON X1600Pro/X1300LE or nVIDIA GeForce 7900GS／7600GS／7300GS, up to latest graphic cards (Radeon HD 3800 or Geforce 9800 series)
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 8), 1x serial (max 2), 1x parallel port, 2x PS/2, 2x SATA
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

So these games run on a program that runs on WindowsXP natively. HAHAHA I guess SF4 for PC will just be the arcade game with the loader embedded.