ehy i see the guide on 2 post in this forum explain how to remove and put another processor inside this machine , but everything is done on single mac pro processor... what i would know if there is any difference between 1 or x2 processor mobo, there is something different? and what about this? i got x 2 2,4 ghz.. so low clock speed for most of software that use only 1-3 cores... so its possible to replace it with x 2 intel W3565" i find them at 250 usd vs "600 or so of hex core " so x2 i would go just for 500 use vs 1200, w3565 u can find this on top single processor quad core 2010! is possible? thank you and sorry for disturb!