Just did it! Some tips on thermal compound
I have received my BTO 15" 2.3GHz High Res Antiglare MacBook Pro. I upgraded it with a 480GB OWC Mercury Extreme Pro SSD and 8GB OWC RAM.
This evening I went through the thrilling experience reapplying the thermal compound. Like so many others in this thread described, my BTO machine also had way too much thermal compound. So I carefully cleaned it and reapplied
Arctic Cooling MX-4.
Be sure that you use a thermal compound that is
electrically non-conductive and non-capacitive. It should also be non-curing, non-corrosive, and non-bleeding. Look for a paste that has a
thermal conductivity of higher than 6 W/mK (Watts per meter Kelvin). The higher the better, but make sure it complies to the characteristics stated above. MX-4 has a themal conductivity of 8.5 W/mK.
Everything went well and the MBP survived the procedure. It's a bit annoying that a user has to make these modifications to get a top machine. The machine is already running 8-10 C cooler. The thermal compound needs now to be conditioned with several hours of operation and several hot / cold cycles. It probably takes ca 50 hours until the compound reaches its optimal performance.
The procedure is definitely nothing for people who are faint at heart. I had quite some sweat drops running down my forehead. It is important to take enough time, work slowly and ultra-carefully. There are 13 cables that must be disconnected (and reconnected) from the mainboard. Some of these cables are very tinny and tricky to handle. The mainboard is held in place by 7 Torx screws. Don't try this if you are not experienced in electronics.
It is very important to use an anti static work mat and a wrist strap. Electrostatic discharges can in worst case destroy the delicate electronic parts and in best case lead to premature component failures within some months or years. It is definitely not a procedure that I would like to perform several times in a year.
Remember that if your MacBook Pro suffers from premature electronic component failure, you will get a new main board that has again too much thermal paste and you need to repeat this tricky procedure again - not something you really want to do all to often - unless you are a masochist.