Retighten the hex screws on the heatsinks with the provided hex wrench very tightly using a cross diagonal tightening pattern similar to when you tighten the lug nuts on a car wheel. Tilt the CPU heatsinks onto the CPU posts lining them up as carefully as possible.Connect the heatsink plug into its socket resting the heatsink on its side.For dual CPU computers, the strip for CPU A will be shorter than for CPU B.Īdd a pea-sized drop of thermal paste on top of each CPU. Remove the old thermal strip completely and attach the new thermal strip.Hint, the bottom pins are asymmetric and you can determine it's orientation by looking at the bottom pins relative to the holes in the socket. Place your CPUs into the CPU socket making certain to line it up properly.If you have a 2010 - 2010, you must skip this step. If you have a 2009 Mac Pro, you'll need to add 3 provided metal washers to each CPU screw post. Feed the plug back through the hole it was initially contained in once again, allowing for some slack for easier access to reconnecting the wire.I used a needle nose plier to remove them. On the side that has 3 tabs you'll need to remove the 2 outer tabs leaving the centre tab intact.
Use the provided cleaning pad to clean the old thermal paste off of the heatsinks.įree the cable plug from both the side channel and the hole it protrude through (push sideways and then down).Carefully detach the cabling from the CPU tray daughterboard.Carefully remove the heatsinks upward as the CPUs will be connected to the heatsinks as you remove them.Using the provided hex wrench to remove 4 or 8 screws (depending on having either a single core or dual core system) from the CPU heatsinks. The instructions provided state to keep the Mac plugged in.
If you're already at 5,1 or have a 2010 - 2012 Mac Pro, you're good to go.
#Apple mac pro desktop cpu upgrade upgrade
If you have a 2009 Mac Pro, however, you need to first upgrade your 4,1 firmware to the 5,1 specification before swapping the CPUs. No tools other than what was provided with the kit was required.
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