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OWC 16GB 2400MHZ DDR4 SO-DIMM PC4-19200 Memory Upgrade Compatibility with 2017 iMac 27 inch with Retina 5K display, (OWC2400DDR4S16G)

OWC 16GB 2400MHZ DDR4 SO-DIMM PC4-19200 Memory Upgrade Compatibility with 2017 iMac 27 inch with Retina 5K display, (OWC2400DDR4S16G)

Q: Can this ram be mixed with apple's pre-installed ram? i've read that crucial memory has not played well with apple ram in the past.

Hey David!Thank you for reaching out to us, this is a great question. We obviously can't speak for Crucial or their product, however with only a single exception which comes to mind (16GB modules for the 2010-2012 Mac Pro) we have never had issues mixing Apple RAM with OWC RAM in the last 5-10 years. You would be just fine mixing this RAM with others, though we always advocate that the larger modules go in the "first" slots (ordered from top to bottom) as the machine may not "see" the larger modules if done the other way around. Let us know if you have another question, and if you want to get in to a longer form discussion I'd recommend getting in touch with our excellent support team at: https://www.owcdigital.com/support/contactHave a wonderful rest of your day!

Q: If I add 2x16gb sticks to the 2x4gb sticks. Does it matter which slots I had them to? Let's say 1 is the bottom slot and 4 is the top?

The answer OWC gave was true in my case. My iMac came with Apple's two 4GB sticks located in slots 2 and 4. Initially I followed advice from another source to switch the location of those sticks to slots 1 and 3, and put the two 8GB OWC sticks in slots 2 and 4, purportedly because Apple had installed their sticks in the locations that are used first by the CPU, so it would be speedier to have the larger 8 GB there. I did that, and the machine did nothing for over a minute. After reading the answer by OWC here, I put the 8GB sticks in slots 1 and 2, and the 4GB sticks in slots 3 and 4, and the machine booted in a few seconds.

Q: Will this owc memory work on my 2018 macbook pro laptop?

Hello. The 2018 MacBook Pro does not have removable memory. You would not be able to replace the memory at all.

Q: Is it compatible with iMac 2019 21.5" Core-i3?

Hello. No this is not compatible memory for a iMac 2019 21.5".

4.6/5

Product ID: 272771907

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Details

Brand
OWC
Computer memory size
16 GB
Ram memory technology
SO-DIMM
Memory speed
1200 MHz
Compatible devices
Desktop

⚡2400MHz high-speed DDR4

💾16GB capacity per module

🖥️260-pin SO-DIMM for iMac 27" Retina 5K

Frequently Bought Together

OWC 16GB PC19200 DDR4 2400MHz 260pin SO-DIMM Memory Ram Upgrade Compatible with Mid 2017 iMac 27" w/Retina 5K Models and Compatible PCs (OWC2400DDR4S16G)

Crucial BX500 1TB 3D NAND SATA 2.5-Inch Internal SSD, up to 540MB/s - CT1000BX500SSD1, Solid State Drive

LeFix Replacement Display Adhesive Tape Kit+Opening Cut Wheel Tool Kit for iMac (Retina 4K, 21.5-inch, 2019)| iMac (21.5-inch, 2017)| iMac (Retina 4K, 21.5-inch, 2017)-A2116

Description

🚀 Elevate your iMac’s power—because average just won’t cut it.

BLAZING FAST 2400 M HZ DDR 4 - Turbocharge your iMac’s multitasking and app performance with cutting-edge speed.
MASSIVE 16 GB MEMORY MODULE - Upgrade effortlessly to handle demanding workflows and future-proof your setup.
MAXIMIZE YOUR I MACS POTENTIAL - Supports up to 64GB total memory across 4 slots—install in pairs for peak efficiency.
PERFECT FIT FOR 2017 I MAC 27 RETINA 5 K - Seamless compatibility ensures plug-and-play reliability without hassle.
LIFETIME WARRANTY ADVANCED REPLACEMENT - Upgrade with confidence backed by OWC’s industry-leading support.

The OWC 16GB 2400MHz DDR4 SO-DIMM is a precision-engineered memory upgrade designed specifically for the Mid 2017 iMac 27" Retina 5K. Featuring 16GB capacity per module, 260-pin form factor, and a high-speed 2400MHz clock, it supports up to 64GB total memory across four slots. Installation in pairs optimizes performance, while OWC’s lifetime warranty and advanced replacement program guarantee a risk-free upgrade experience.

Specifications

Brand	OWC
Product Dimensions	18 x 12.5 x 1 cm; 23 g
Item model number	OWC2400DDR4S16G
Manufacturer	Other World Computing
Series	OWC2400DDR4S16G
Color	1 x 16GB
Form Factor	260-pin
RAM Size	16 GB
Memory Technology	SO-DIMM
Computer Memory Type	DDR4 SDRAM
Memory Clock Speed	2
Voltage	1.2 Volts
Are Batteries Included	No
Item Weight	23 g

Have a Question? See What Others Asked

Can this ram be mixed with apple's pre-installed ram? i've read that crucial memory has not played well with apple ram in the past.

If I add 2x16gb sticks to the 2x4gb sticks. Does it matter which slots I had them to? Let's say 1 is the bottom slot and 4 is the top?

Will this owc memory work on my 2018 macbook pro laptop?

Is it compatible with iMac 2019 21.5" Core-i3?

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