From reading Apples specs, it is my belief that you can use all RDIMMs if you wish, including using 64GB RDIMMs to exceed 384TB since they are becoming more readily available now.

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This paper does an excellent job of showing how any configuration other than 6 or 12 identical DIMMs can seriously harm your performance.

If youre feeling lazy at least look at the table on page 18.

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Does anyone know the difference between these two RAMs Do they work in the Mac Pro 7,1 Cheers View attachment 889973.

Theres a ton of unnecessary speculation going on here regarding performance of different memory configurations.

Looking to utilise the 32gb factory default - and not overly throw money at it at the moment.

Based in the UK and apart from MacSales not really finding exact matches to the Samsung references in this post.

Wonder if anyone had joy finding reasonably priced RAM in the UK.

Samsung seems to be the only one who makes a DDR4 2666 RDIMM for the 8-16 core Mac Pro, and so far I only see a 8GB RAM card.

Apple Mac Pro Late 2019 - 3.2GHz 16-Core Tower Memory RAM Upgrades - FREE Delivery Guaranteed Compatible Mr Memory.

Samsung Server RAM 32GB 2933 MHz ECC RDIMM DDR4 Single Memory Module.

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Anyone LR-DIMMS are installed beyond 192gb as default by apple because the next step is 384gb But I am fairly sure you can install 12 x 32gb R-Dimms Right.

These are from my MacPro 7,1 Geekbench5: - 48GB (68) Apple RAM: 19386 ( ) - 192GB (632) Samsung: 20830 ( ) - 240GB RAM (6x32 6x8): 18891 ( ) I think the best perf is with 32GB modules, ideally 12 of them.

Any mixing of size or not using the full channels result in perf lost, although for a lot of applications the difference is likely imperceptible.

That being said I took out the 48GB I got with it and use only the 192GB I bought.

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The person I was chatting with online said they have NO memory that will work with the Mac Pro 2018.

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