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    Timetec 32GB KIT(4x8GB) Compatible for Apple Late 2015 iMac (27-inch w/Retina 5K Display) DDR3L 1867MHz / 1866MHz PC3L-14900 2Rx8 CL13 1.35V 204 Pin SODIMM Memory Module MAC RAM Upgrade for iMac 17,1

    • 32GB (4 x 8GB)
    • 16GB (2 x 8GB)
    • 8GB
    • DDR3L 1866 (PC3L 14900)
    • CAS Latency 13
    • 1.35V
    +
    +
    Overview
    Specs
    Reviews (1)

    Any questions? Ask CelesteSM will help you find out quickly.

    MAC DDR3 SODIMM
    DDR3 MAC SODIMM
    Great Quality, Fast Speed, High Performance

    All Timetec modules are built from strict selected premium chip ICs for the high-performance potential to allow excellent stability and backed by Timetec advanced replacement program. All memory modules are engineered to perform in even the most extreme environments and rigorously worked to ensure that each module meets our stringent performance.

    Specifications
    Module Type DDR3 Non-ECC Unbuffered SODIMM
    Frequency 1866MHz
    CAS Latency CL13
    Capacity 8GB
    Voltage 1.35V / 1.5V
    Pins 204 Pin
    Dimensions 30(H) x 67.6(L)mm
    iMac 2015
    iMac (27-inch, Late 2015, Retina 5K)
    Compatible List
    • MK462LL/A - "Core i5" 3.2 GHz - iMac 17,1 - A1419
    • MK472LL/A - "Core i5" 3.2 GHz - iMac 17,1 - A1419
    • MK482LL/A - "Core i5" 3.3 GHz - iMac 17,1 - A1419
    • BTO/CTO - "Core i7" 4.0 GHz - iMac 17,1 - A1419
    Increase Multitasking

    Timetec memory is engineered to maximize effectiveness and efficiency of your Mac system and increase your Mac multitasking capabilities.

    DDR3 SODIMM MAC bg1
    Easy Installation

    Just with a screwdriver and your owner's manual, you can upgrade your Mac System at home within a few minutes with the easy plug and play design.

    DDR3 MAC SODIMM bg2
    Strict Selected IC

    Timetec memory only use high quality IC which is engineered to maximize effectiveness.

    DDR3 MAC SODIMM bg3
    Design For Apple Late 2015 iMac 27-inch w/Retina 5K model
    ID: iMac 17, 1 (i5 3.2GH z, i5 3.3GH z, i7 4.0GH z) DDR3L 1866MHz PC3L-14900 204-Pin Unbuffered Non ECC 1.35V CL13 Dual Rank 2Rx8 based 512x8
    Module Size: 8GB
    Package: 4x8GB For Apple iMac Late 2015 JEDEC standard 1.35V ( 1.28V ~ 1.45V ) and 1.5V ( 1.425V ~ 1.575V ) Guaranteed Lifetime warranty from Purchase Date Free technical support (support@timetecinc. com) MON - FRI 9AM-6PM PST

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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    Timetec MM-H8GD318J7D is a 32GB (4×8GB) DDR3L-1866 SO-DIMM memory kit for compatible Apple systems, including the Late 2015 27-inch Retina 5K iMac (iMac17,1). It suits owners upgrading that iMac who need 204-pin, 1.35V, CL13 memory.

    Recommended For

    • Late 2015 27-inch Retina 5K iMac owners whose memory pressure rises while running several demanding apps at once; this kit installs 32GB across the iMac’s four memory slots.
    • Owners using this iMac for Photoshop work with large files who need more memory headroom; OWC published Photoshop testing on the Late 2015 5K iMac at different memory capacities.
    • Late 2015 27-inch iMac owners who use virtual machines alongside other applications and are limited by the machine’s current RAM; community discussions specifically mention this kind of multitasking as an upgrade reason.
    • DIY upgraders replacing or expanding memory in a Late 2015 27-inch 5K iMac; Apple lists this model’s 204-pin, 1867MHz PC3-14900 memory requirements, and OWC provides an installation walkthrough.

    Real-World Use Scenarios

    • When an 8GB iMac slows down with a browser, email, and work apps open together, expanding memory can give those apps more room and may reduce slowdowns caused by memory pressure; it will not speed up every task.
    • For Photoshop work with large images or several layers, 32GB can provide more working room for the image editor and other open apps, though editing speed still depends on the iMac’s processor, graphics, and storage.
    • For video editing while keeping other apps open, the added memory can help accommodate a larger active workflow; it does not by itself guarantee faster playback, rendering, or exports.
    • If you run a Windows virtual machine alongside macOS apps, the extra memory can be shared across both environments, leaving more room for concurrent work.
    • For an iMac that freezes or slows under a demanding workload, a RAM upgrade may help if memory is the bottleneck; it will not resolve unrelated CPU, storage, or software limitations.