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BARE FEATS LAB - real world Mac speed tests

2020 iMac 5K memory testing

September 1st, 2020 by rob-ART morgan, mad scientist

What's the best combination of memory for the 2020 iMac 5K 8-core and 10-core?


GRAPH LEGEND

TEST MULE
2020 iMac 5K with 3.8GHz 8-core Core i7 CPU, 2666MHz DDR4 memory

Memory Tester is by diglloydTools

Various Memory Configurations
(HIGHER MB/s = FASTER)

2020 iMac 5K memory mixes

Mixing Memory Capacities
(HIGHER MB/s = FASTER)

2020 iMac 5K memory capacities

Memory Brands Compared
(HIGHER MB/s = FASTER)

2020 iMac 5K memory brands compared

 

WHAT DID WE LEARN?

Three things to know when choosing memory for the 2020 iMac 5K 8-core or 10-core:

1. If you don't fill all memory slots, putting memory modules in slots 1 and 3 (or 2 and 4) insures Dual Channel memory mode.

2. For best speed, use matching memory size (preferably same vendor).

3. Overclocked memory won't run faster than 2666MHz.

Comments? Suggestions? Feel free to email me, Follow me on Twitter @barefeats.

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copyright 2020 Rob Art Morgan
"BARE facts on Macintosh speed FEATS"
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