Upgrade 5K iMac Mid 2015 Ram

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Upgrade 5K iMac Mid 2015 Ram

Trying to increase my 5K iMac mid 2015's RAM from default 8 GB. I'm lookin at getting the

Corsair CMZ16GX3M2A1600C10 Vengeance 16GB (2x8GB) DDR3 1600 MHz (PC3 12800) Desktop Memory 1.5V. Is that compatible with my iMac? Here is the Amazon link: https://www.amazon.com/gp/product/B006EWUO22/ref=ox_sc_act_title_2?smid=ATVPDKIK X0DER&psc=1. Also, is it possible to leave the 8 GB RAM I already have on my iMac and just add the 16 GB RAM sticks, or do they all have to be matching in size, brand, etc?

iMac with Retina 5K display, macOS High Sierra (10.13.4), Mid 2015

Posted on Apr 3, 2018 7:58 PM

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Answer 1

Top-ranking reply

Kappy

Level 10

362,007 points

Apr 3, 2018 8:11 PM in response to krazygreekguy

You want RAM that meets the specs for your model. A 5K iMac can handle up to 32GBs of RAM. It has a total of four slots.

Maximum Memory	32 GB
Memory Slots	4 - 204-pin PC3-12800 (1600 MHz) DDR3 SO-DIMM

I would look for reliable product at OWC, DataMem, or Crucial. I would stay away from Corsair if at all possible. RAM must be installed in matching pairs but the pairs need not be matched by size. You have two 4GB modules already installed. You can install two 8GB modules in the remaining slots. This gives you a total of 24GBs.

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Answer 2

rkaufmann87

Level 10

148,494 points

Apr 3, 2018 8:11 PM in response to krazygreekguy

No, please only purchase RAM from crucial.com or macsales.com. IMacs are very sensitive to using quality RAM. Both of the vendors only supply quality products at reasonable prices and provide excellent service. Most experienced users on these forums will only use these vendors for RAM.

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Answer 3

Apr 4, 2018 4:57 PM in response to Kappy

Thanks for the info. I appreciate it. Would this be alright then?

Crucial 16GB Kit (8GBx2) DDR3/DDR3L 1600 MT/S (PC3-12800) Unbuffered SODIMM 204-Pin Memory - CT2KIT102464BF160B https://www.amazon.com/dp/B007B5S52C/ref=cm_sw_r_cp_api_0ywXAbCMZ9VT5

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Answer 4

Kappy

Level 10

362,007 points

Apr 4, 2018 7:45 PM in response to krazygreekguy

Yes, that should be OK.

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Upgrade 5K iMac Mid 2015 Ram

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