A long time ago, I had delidded an i7-3770K and to replace the Thermal paste between the CPU Die & the IHS.
After reviewing many stories here and other forums, I thought it was time to upgrade the two 2.26Ghz E5520's on my 2009 Mac Pro 4,1 to 3.46Ghz X5690.
The EFI firmware has been upgraded to...