iMac with next generation quad-core processors>>>>>>>
AKA Sandy Bridge. Apple has them and so do Windows machines. They run cooler on less wattage http://computers.shop.ebay.com/Computer-Components-/3667/i.html?_nkw=I5+SANDY+BRIDGE&_catref=1&_dmpt=Desktop_PCs&_fln=1&_ipg=&_trksid=p3286.c0.m282
AKA current generation.