Bought a Mac Pro online. 2008 2X2.8GHz 8-core. Runs El Capitan, but not (unmodified) Sierra. There are a couple of upgrades I’ve looked into but the one that’s bothering me now is RAM. I’ve bought 32Gig of the right stuff but it came without “heat spreaders”. Why we needed a new name for heat sinks is beyond me. And why not “thermal dissipators? The available literature is very confusing on this. Do I need them or do I not? Apple has a Tech Note TN 2156 that says they are necessary, if only to keep fan speeds in check. Interestingly, there is a reference in the Tech Note to MO-256 FBDIMM Heatsinks. New heat spreaders of that design cost as much, if not more, than the RAM. On the other hand Tom’s Hardware says they are only necessary if you’re overclocking the RAM. The “heat spreaders” selling online are way flimsier than the Apple Approved ones that came with the RAM installed on the Mac Pro. The only option I see is to transfer the “spreaders” from the installed RAM to the new stuff. Then there’s the thermal conducting plastic adhesive strips to consider. If they behave like normal double-side tape things are going to get messy. Anyone got any better ideas/info/experience?