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.

Yes, I am using this RAM for my 2017 27" 5k iMac. Just insert this RAM in the slots that the Apple RAM is currently in, and then insert the Apple RAM in the remaining slots. This ensures the newer and larger RAM modules are used first for better performance.

Is this the same as CT10559857 on crucial.com? because they look like the same as each other, but model number of this item is CT16G4S24AM.

Hi Shane. Thanks for contacting us. Yes, these items are the same part. If you order from either you would receive the same item.

I bought imac retina 5k, 27-inch, 2017 with 16 gb (2x8) 2400 mhz ddr4 memory. i'm planning to add another 32gb (2x16). will this model work fine ?

Thank you for your question. Kit CT2K16G4S24AM is compatible with your iMac Retina 5K, 27-inch 2017 model. I will mention that depending on the version of your iMac you may not be able to exceed 32GB. 2017 models using the 3.4GHz i5 processor are limited to 32GB while the 3.5GHz and 3.8GHz models can reach 64GB.

Would someone please explain single and dual rank? Which one should we buy and will both work in our fancy new iMac 27 2017s?

The Crucial Community has an article...What is a memory rank. Wikipedia does too, look up memory rank. You can look at your Apple memory to see if it's single or dual ranked in case you want to strictly match the stock memory type. The Apple documentation mentions nothing about single or dual so it would appear that it doesn't matter. I purchased the dual ranked (16x2) and it is working just fine with the stock RAM (4x2).

Desertcart Logo

Deliver to Andorra

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🚀 Upgrade your Mac’s brainpower and never miss a beat!

BLAZING 2666 M HZ SPEED - Turbocharge your Mac’s multitasking and app responsiveness with DDR4 performance that keeps up with your hustle.
MASSIVE 64 GB CAPACITY - Unleash seamless heavy-duty workflows and future-proof your system with a powerhouse memory kit.
EFFORTLESS INSTALLATION - No tech degree needed—upgrade your Mac in minutes with simple plug & play and expert how-to guides.
MICRON BACKED RELIABILITY - Built on 42 years of memory mastery, ensuring rock-solid stability and peace of mind for your critical projects.
OPTIMIZED FOR MAC COMPATIBILITY - Guaranteed smooth integration with Crucial’s System Scanner and Advisor Tool—no guesswork, just pure performance.

The CrucialRAM 64GB Kit (2x32GB) DDR4 2666MHz CL19 is a high-performance, Mac-optimized memory upgrade designed to boost system speed and multitasking efficiency. Featuring easy installation, Micron’s trusted quality, and compatibility assurance tools, this 64GB SO-DIMM kit delivers reliable, lightning-fast memory at 1.2V, perfect for professionals demanding seamless productivity.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

RAM	64 GB SO-DIMM
Memory Speed	2666 MHz
Brand	Crucial
Series	Crucial DDR4 2666 MT/s SODIMMS
Item model number	CT2K32G4S266M
Item Weight	0.282 ounces
Product Dimensions	2.7 x 0.43 x 1.1 inches
Item Dimensions LxWxH	2.7 x 0.43 x 1.1 inches
Color	Green
Number of Processors	1
Computer Memory Type	SODIMM
Voltage	1.2 Volts
Manufacturer	Crucial
Language	English
ASIN	B08DP8CPXF
Date First Available	August 11, 2020

CrucialRAM 64GB Kit (2x32GB) DDR4 2666MHz CL19 Memory for Mac CT2K32G4S266M

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions