Upgrading 2020 iMac Ram : Crucial

[morecowbell]

Hi All..

I'm taking the forums advice and I'll upgrade the RAM myself to avoid Apple's crazy pricing. That said, it doesn't look like Crucial or the other sites have added the Ram for the 2020 iMac. Is last years version the same or do I need to wait to order it?

 

[MacUser2525]

Hi All..

I'm taking the forums advice and I'll upgrade the RAM myself to avoid Apple's crazy pricing. That said, it doesn't look like Crucial or the other sites have added the Ram for the 2020 iMac. Is last years version the same or do I need to wait to order it?

Ram is ram all you need is the proper specifications. DDR4 2666mhz if my memory serves me, no clue on whether they still use the laptop variety in them machines, you will need to check that.

 

[morecowbell]

Is it the same RAM as the 2019 version? I’m assuming it is.

 

[mindquest]

Go with OWC for price and that they stand behind their warranty!

 

[teetoo]

DDR4 PC4-21300 2666MHz 260-pin SODIMM (2667MHz) - listed for imac 2020 on mrmemory.co.uk earlier today

 

[Moshe1010]

Go with Samsung. It will work:

Samsung 32GB DDR4 2666MHz RAM Memory Module for Laptop Computers (260 Pin SODIMM, 1.2V) M471A4G43MB1

Samsung 32GB DDR4 2666MHZ PC4-21300 SODIMM M471A4G43MB1-CTD

www.amazon.com

 

[pldelisle]

See https://forums.macrumors.com/threads/memory-upgrade-compatibility-list-for-imac-2019-2020.2248911/

 

[BazzaT]

Go with Samsung. It will work:

Samsung 32GB DDR4 2666MHz RAM Memory Module for Laptop Computers (260 Pin SODIMM, 1.2V) M471A4G43MB1

Samsung 32GB DDR4 2666MHZ PC4-21300 SODIMM M471A4G43MB1-CTD

www.amazon.com

Hi, I am trying to use this ram, but my new iMac will not boot up with all 4 32gb sticks... only 2 at a time... I can actually insert 3 of the 32gb sticks and one of the original 4gb sticks and it starts! Any clues about the 4 stick problem? I have swapped the sticks around so it is not one error one.

 

[The French Man]

HI,

2 X 2X32 GO in my new iMac 27' 2020 (128GO)
That works fine

HyperX Impact DDR4 HX426S16IBK2/64 Mémoire RAM 2666MHz CL16 SOIMM 64Go Kit (2x32Go)
HyperX Impact DDR4 HX426S16IBK2/64 Mémoire RAM 2666MHz CL16 SOIMM 64Go Kit (2x32Go)
www.amazon.fr

 

[The French Man]

 

[quatermass]

Just got my 27" iMac this morning. I ordered it with the base 8GB, and had the store I bought it from add 2x32GB modules. The original 8GB stayed in place, giving me total of 72GB - never had so much RAM! I checked the hatch on the back to see if it was in - replacing it would be trivially easy. Not so much on the 21" though.

 

[pldelisle]

Just got my 27" iMac this morning. I ordered it with the base 8GB, and had the store I bought it from add 2x32GB modules. The original 8GB stayed in place, giving me total of 72GB - never had so much RAM! I checked the hatch on the back to see if it was in - replacing it would be trivially easy. Not so much on the 21" though.

View attachment 964254

You RAM doesn’t work at full speed. You should remove the 2x8GB modules.

 

[pmiles]

You RAM doesn’t work at full speed. You should remove the 2x8GB modules.

I agree... you can't mix different size RAM in the 2020 27" iMacs. Surprised the folks that installed it didn't know that... it's been a big point of contention and even Apple had to update their own installation guides to mention it.

 

[quatermass]

You RAM doesn’t work at full speed. You should remove the 2x8GB modules.

That's an idea - I'll do that. Thanks for spotting it.

 

[Schnauzer World]

View attachment 964243

I"m going to give this RAM a try, looks like Crucial is sold out of the 2x16 and I get 64GB for not much more.