Listing is for a pair of Intel Xeon X5680 6-core processors with IHS removed (delidded). Chips have been stress tested in a 2009 Mac Pro to ensure successful delid.
Selling just the delidded CPUs. To complete the install into a Mac Pro, you will need a 3mm hex wrench 3" or longer, 90% or higher isopropyl alcohol, and thermal grease (I use Arctic MX-4). In addition, you will need a graphics card flashed with Apple EFI in order to update the firmware from Mac Pro 4,1 to 5,1 before CPU install