Hackintosh Pentium 4 on almost the crappiest configuration possible: Biostar motherboard with onboard VIA AC97 audio, VIA FastEthernet & VIA S3 ProSavage video. 1 Gb RAM DDR 333 MHz, HDD ATA 20 Gb, DVD-R/W DL & Philips LCD 17" at 1280x1024x32.
ALL WORKING but:
No Core Image
No Quartz Extreme
Some apps. just blow up (ie. Toast Titanium, PixelMator), most likely because of crappy SSE2 support.