http://www.macworld.com/article/131782/2008/01/macprobench2.html?t=205 Very interesting ! From further review of these tests. I've changed my mind about purchasing the 8 Core Stock. I was gonna pick up the Stock mac pro this weekend with the ATI card but now i'll order the 4 Core with the 8800 GT card instead. The Stock with ATI card would have run me $2599 (EDU discount and Tax Free) (I would have upgraded vid card to 8800gt later and that would have cost me another $300) If I order online and have it shipped (EDU but with Tax) the price will be $2468 but that includes the 8800 GT. So the 8 Core stock will end up costing me $550 more. The benchmarks/performance for the 8 core vs the 4 core doesnt seem worth the added $550. I can upgrade my ram and HD (just ordered a 10k rpm WD Raptor HD) with the money I save.