Thanks for the post!! I just upgraded my Mac Pro 2009 ( a.k.a MacPro4,1) with X5680.
The most incredible $40 upgrade to a computer ever. 12 Threads and now Docker runs with VT-x unrestricted mode.
With NVMe ssd that kicks at 1300MB/s, god knows how many more years of service life this beast has.
However, for the benefit of whomever left to try adding to this 10 years old machine,
may I point out that the screws are DEFINITELY NOT 3mm HEX like everyone says.
It is “Torx T15”.
You may get lucky but if you are unlucky like me, you’ll be left with ONE SCREW stuck in there you can’t turn with 3mm hex.
HAVE T15 ready before you start.
Also, DON’T USE anything with such big handle like the original poster. User something with shorter spin handle to avoid accidentally over tightening it.
Thanks. I’ll be enjoying this Mac Pro that was literary destined for a dustbin once in our office, for years to come.