Apple has two webpages detailing the type of RAM needed for the 2017 27' iMac, but unfortunately they both have mistakes: The support page mentions 204 pin SODIMMs (the correct is 260 pin): The online manual has the correct 260 pin but refers to the SODIMMs as PC4-2400 (the correct designation is PC-19200): So, in summary, the correct RAM type would be 260 pin DDR4-2400 SODIMM PC4-19200 memory. There are 4 slots and you may use 4GB, 8GB and 16GB modules, for a maximum of 64 GB (4x16). Regarding which brands and models specifically will work better with the 2017 27' iMac, nobody knows yet.
- Crucial 32gb Pc4-19200 260-pin Ddr4 Sdram Sodimm Kit For Macbook
- Crucial 32gb Pc4-19200 260-pin Ddr4 Sdram Sodimm Kit For Mac Os
- Crucial 32gb Pc4-19200 260-pin Ddr4 Sdram Sodimm Kit For Mac Pro
Things like latency and other details could affect performance and stability. Past Macs have been known to be quite picky regarding 3rd party RAM, so I guess the safest bet is to wait for early adopters to get their hands on the computer and try out various RAM modules.
Crucial 32gb Pc4-19200 260-pin Ddr4 Sdram Sodimm Kit For Macbook
Crucial 32gb Pc4-19200 260-pin Ddr4 Sdram Sodimm Kit For Mac Os
That's what I'll do! I'm going with Ballistix I believe. I've had Corsair Vengance in a 2012 iMac and it lasted 4 years but did finally fail on me and the RMA turn around time was very long. So I ended up buying Crucial's Mac specific RAM for my iMac and also used Crucial for my MacBook Pro. Haven't had any issues since but then again I've not had Crucial for 4 years which isn't too bad. I've had memory on a PC fail as well and it did so around the 4 year mark so that may be typical. I've looked here and on Apple Support Communities and see no issues with people using Ballistix in their Mac's and it's made by crucial.
This item: Crucial 32GB Kit (16GBx2) DDR4 2400 MT/s (PC4-19200) DR x8 SODIMM 260-Pin Memory - CT2K16G4SFD824A CDN$ 368.75 In Stock. Ships from and sold by Amazon.ca. This item Crucial 32GB Kit (16GBx2) DDR4 2400 MT/s (PC4-19200) DR x8 SODIMM 260-Pin for Mac - CT2K16G4S24AM Crucial CT16G4SFD824A 16GB 2400MHz 260-Pin SODIMM Laptop Memory Crucial 16GB Kit (2 x 8GB) DDR3L-1600 SODIMM Memory for Mac.
On Crucial's website which they've updated to list 2017 iMac compatible RAM it says Ballistix isn't compatible but every listed spec is the same: Here's the Spec page for Ballistix from Crucial's website (note it's cheaper on Amazon and I've linked it above): Here's the spec page for Crucial's Mac Memory for 32GB x2: The only spec that's missing that I can see is if the Ballistix is Single Ranked or not but since it's a gaming type of memory (which means it'll be good for vide editing etc.) I'd assume it's single ranked as well. Posting this in case I'm missing something and someone could point it out otherwise I'm ordering this one. I'm going with Ballistix I believe. I've had Corsair Vengance in a 2012 iMac and it lasted 4 years but did finally fail on me and the RMA turn around time was very long. So I ended up buying Crucial's Mac specific RAM for my iMac and also used Crucial for my MacBook Pro. Haven't had any issues since but then again I've not had Crucial for 4 years which isn't too bad.
I've had memory on a PC fail as well and it did so around the 4 year mark so that may be typical. I've looked here and on Apple Support Communities and see no issues with people using Ballistix in their Mac's and it's made by crucial. On Crucial's website which they've updated to list 2017 iMac compatible RAM it says Ballistix isn't compatible but every listed spec is the same: Here's the Spec page for Ballistix from Crucial's website (note it's cheaper on Amazon and I've linked it above): Here's the spec page for Crucial's Mac Memory for 32GB x2: The only spec that's missing that I can see is if the Ballistix is Single Ranked or not but since it's a gaming type of memory (which means it'll be good for vide editing etc.) I'd assume it's single ranked as well. Posting this in case I'm missing something and someone could point it out otherwise I'm ordering this one. The OWC 32GB kit (16Gbx2) is $280 and has a CL of 11 while the Crucial kit is $250 and has a CL of 17. I understand that lower CL is supposed to be faster but does it make a difference in Real world applications and is it worth the $30 extra? If I planned on keeping the 8GB of OEM memory to get me to 40GB will my memory speed be dictated by the OEM sticks (which I believe are CL16)?
Crucial 32gb Pc4-19200 260-pin Ddr4 Sdram Sodimm Kit For Mac Pro
If that is the case would running 32GB at CL11 be noticeably faster than running 40GB at either CL 11/16 or CL 16/17?
Paisawapas.com as top cash back & Coupons website, ensures you get the best price & deal on Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) SR x8 SODIMM 260-Pin for Mac - CT8G4S24AM by Crucial in India. How do we ensure the cheapest price of Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) SR x8 SODIMM 260-Pin for Mac - CT8G4S24AM?, well when you shop at via Paisawapas.com we get paid commission for the sale you generate & we pass that commission to you as Reward. Grab the deal on Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) SR x8 SODIMM 260-Pin for Mac - CT8G4S24AM by Crucial via PaisaWapas.com at. The latest price of Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) SR x8 SODIMM 260-Pin for Mac - CT8G4S24AM at is ₹6499 and was last updated on Fri Aug 17 23:30:34 IST 2018 When you buy Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) SR x8 SODIMM 260-Pin for Mac - CT8G4S24AM from via Paisawapas.com your effective price after Reward will be ₹6499 (.see Reward rates for details). The price is valid in all major cities of India including Delhi, Bangalore, Kolkata, Mumbai, Hyderabad, Chennai and Pune.
Please check the specific e-commerce website for T&Cs and buying terms.