Cheapest PC that runs OSX86 perfectly?

[adric22]

I have been wanting a Mac for years, but just can't afford one.   I have several PCs at home and work and I've tried downloading some of the OSX86 versions but they either don't work at all, or lack functional sound or networking. 

I do not want to build a PC as that would cost as much as just buying a Mac.

So, I was wondering if anyone had any suggestions on what is the cheapest PC that is known to run the OS perfectly?  For example, many systems can be had on ebay for around $100 that are older Pentium 4 systems by Compaq, HP, Dell, etc..   Surely one of these cheap-o computers will run it correctly, right?

[Begletsut]

listen, u need a pc with processador intel with SSE2(thats very important), ram dont care, HD dont care, grafic card, NEVER ati ASUS, u can use ati saphire, and all models of Nvidia and Motheboard with chipset intel to, thats all