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Jul 10, 2017
Great performance for a 6 years old computer.
5 of 6 found this helpful I now use Parallels with windows 10 and windows 7 vms, running at the same time without noticing a drop on the performance on the mac host.
It was easy to install and the kit has everything need. Still, I recommend the use of a "premium" thermal paste. I'm using Artic Silver 5. Initially, I used the thermal paste that came with the kit and noticed that the cpus were way above the temperature I'm used to (from ~40ºC went to ~60ºC).
I then tried a thermal paste from Thermal Take that the local Best Buy had in stock. While that improved (from 60ºC to 40~50ºC), I gave a try on the AS5 and despite the hassle of having to un-assembly and clean the cpus / coolers one more time, I'm glad I did.
After the Artic Silver, the iStat graph showed a drop on the average temperature and when I start some VMs, I don't have to increase the A/C to be able to work in the same room.
Bottom line: these will give a Mac Pro 5.1 a few more year of life, hopefully, enough time until Apple makes some decent Mac Pros again.