Is that ram compatible with latest imacs?

[tolgaytoklar]

I am considering to buy a new imac. But ram priceses are too high on the Apple's website. So i want to buy my rams myself. I found that ram:

CORSAIR Mac Memory 16GB (2 x 8GB) DDR4 2666MHz C18 Memory Kit

CORSAIR Mac Memory helps increase your system’s performance and your productivity, guaranteed for compatibility and optimal performance in your Mac system.

www.corsair.com

Is this compatible with the latest imacs which currently on sale right now?

 

[mbosse]

I think it is, but I have so-so experience with Corsair. I'd suggest RAM from Apple OEM suppliers, such as Crucial/Micron, Elpida, Hynix or Samsung.

Best,
Magnus

 

[MSastre]

I've always used Crucial RAM with excellent results. They have a RAM selector that will match your MAC with the proper Memory sticks.

 

[pldelisle]

Crucial/Micron is the best.

 

[triangletechie]

Found these for the new 2020 models. Much better pricing.

Apple iMac (Retina 5K, 27-inch, 2020) iMac20,1 | Memory RAM & SSD Upgrades | Crucial.com

Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Apple iMac (Retina 5K, 27-inch, 2020) iMac20,1 - FREE US Delivery.

www.crucial.com

 

[Mcdevidr]

Im getting a MCA cpu core error when starting mine with OWC ram that is supposedly compatible. After the machine finally boots up with the stock and OWC ram it only runs at 2133MHZ and yet independently the stock and OWC work at 2666. I don't get it.
[automerge]1596851631[/automerge]

Im getting a MCA cpu core error when starting mine with OWC ram that is supposedly compatible and also when just starting with the stock ram now too. After the machine finally boots up with the stock and OWC ram it only runs at 2133MHZ and yet independently the stock and OWC work at 2666. I don't get it.

 

[pldelisle]

Im getting a MCA cpu core error when starting mine with OWC ram that is supposedly compatible. After the machine finally boots up with the stock and OWC ram it only runs at 2133MHZ and yet independently the stock and OWC work at 2666. I don't get it.
[automerge]1596851631[/automerge]

Weird.
You might be out of luck with DRAM chip lottery.

 

[Mcdevidr]

Yea. I’m just running the OWC 16gb. I may pick up another 16 from them at some point of the same exact ram. Fingers crossed it will work.

 

[Whiteman007]

@pldelisle i been seeing people say 3200 speed ram work like this one here any reason to not get the 3200?

Crucial RAM 32GB Kit (16GBx2) DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory CT2K16G4SFD832A

CT16G4SFD824A is a 16GB DDR4 Notebook module that operates at speeds up to 2400 MT/s and has a CL17 latency. It is an Buffered SODIMM. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is compatible with systems that take DDR4 2400MT/s SODIMM memory.

www.amazon.com

 

[Mikeeee]

Yes There is a reason. If you go to Crucial website this is not the configuration they recommend as a compatible upgrade for the new iMac.

They recommend:

Crucial 32GB Kit (2 x 16GB) DDR4-2666 SODIMM Memory for Mac

CT2K16G4S266M

@pldelisle i been seeing people say 3200 speed ram work like this one here any reason to not get the 3200?

Crucial RAM 32GB Kit (16GBx2) DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory CT2K16G4SFD832A

CT16G4SFD824A is a 16GB DDR4 Notebook module that operates at speeds up to 2400 MT/s and has a CL17 latency. It is an Buffered SODIMM. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is compatible with systems that take DDR4 2400MT/s SODIMM memory.

www.amazon.com

 

[bigcat]

question, if I buy the 8gb iMac, can I upgrade it myself to 128mb? meaning do all of them come with the 4 slots available?

(looks like crucial does not list 32gb sticks as compatible?

Apple iMac (Retina 5K, 27-inch, 2020) iMac20,1 | Memory RAM & SSD Upgrades | Crucial.com

Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Apple iMac (Retina 5K, 27-inch, 2020) iMac20,1 - FREE US Delivery.

www.crucial.com

so amazon has this (BTW, what's single rank vs double rank?), not sure this can work

Crucial RAM 64GB Kit (2x32GB) DDR4 2666 MHz CL19 Laptop Memory CT2K32G4SFD8266

There’s an easy cure for a slow computer: more memory. Designed to help your system run faster and smoother, Crucial Laptop Memory is one of the easiest and most affordable ways to improve your system’s performance. Load programs faster. Increase responsiveness. Run data-intensive applications wi...

www.amazon.com

and I see OWC has this

128GB Memory Upgrade for 2019-2020 Apple iMac (27-Inch)

Upgrade your 2019-2020 Apple iMac up to 128GB of RAM - double the maximum capacity offered by Apple.

eshop.macsales.com

any thoughts for 128gb?

 

[pldelisle]

so amazon has this (BTW, what's single rank vs double rank?), not sure this can work

Crucial RAM 64GB Kit (2x32GB) DDR4 2666 MHz CL19 Laptop Memory CT2K32G4SFD8266

There’s an easy cure for a slow computer: more memory. Designed to help your system run faster and smoother, Crucial Laptop Memory is one of the easiest and most affordable ways to improve your system’s performance. Load programs faster. Increase responsiveness. Run data-intensive applications wi...

www.amazon.com

As said in the first post, these sticks are not referenced in Crucial compatibility list for Apple systems. But these shares the same specs as the other kit. So it should work.

 

[profets]

Looking at some RAM options on amazon.ca (I'm in Canada).

I know from Crucial's website that the following is officially supported for iMac 2020:

• CT2K16G4S266M

This is the 32GB kit on amazon for $200, but out of stock:

Crucial 32GB Kit (16GBx2) DDR4 2666 MT/s (PC4-21300) CL19 DR x8 SODIMM 260-Pin for Mac - CT2K16G4S266M

CT2K16G4S266M is a 32GB kit consisting of (2) 16GB dual Ranked DDR4 SODIMM modules that operates at speeds up to 2666 MT/s and has a CL19 latency. It is an Unbuffered SODIMM. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is compatible with systems that take DDR4 2666Mt/s...

www.amazon.ca

This is another 32GB kit on amazon, in stock, and $170. Not the same part/model number, but the specs seem identical:

Crucial RAM 32GB Kit (2x16GB) DDR4 2666 MHz CL19 Laptop Memory CT2K16G4SFRA266

CT2K16G4SFRA266 is a 32GB Kit consisting of (2) 16GB DDR4 notebook module that operates at speeds up to 2666 MT/s and has a CL19 latency. It is an Unbuffered SODIMM and can be built either as single-ranked or dual-ranked. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is ...

www.amazon.ca

In some reviews I see people using them on 2019 iMacs without issue, and I'm sure it would work fine. But curious how strictly we should follow advice to use officially supported option.

 

[ZBoater]

This is what I got. I got it on sale for $200 each. The only difference with the official specs is a lower latency (CL16 vs CL19). I have my fingers crossed that won't make a difference. I get my iMac next week so we shall see.

HyperX | High Quality Gaming Gear

HyperX is a brand committed to making sure every gamer feels they are included. No matter who you are, or what you play, WE'RE ALL GAMERS.

www.hyperxgaming.com

 

[pldelisle]

I strongly advise to take a certified kit. It’s usually not more expansive and when sh*t happens you have support and just not simply “this memory module is not in our compatibility list for your computer, sorry”