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Mushkin Enhanced

Mushkin Enhanced MAR3S186DM8G28X2 16GB (2 x 8GB) DDR3L 1866 SO-DIMM memory upgrade

SKU CH-EMWP-QJ8JN MPN MAR3S186DM8G28X2

16 GB dual-channel DDR3L 1866 SO-DIMM kit for late-2015 27-inch iMac Core i5/i7 models

  • Type204-Pin DDR3 SO-DIMM
  • CompatibilityiMac "Core i5/i7" 27-Inch (Late 2015)
  • Capacity16GB (2 x 8GB)
  • SpeedDDR3L 1866 (PC3L 14900)
  • CAS Latency13
  • Timing13-13-13-32
  • 16 GB dual-channel kit boosts multitasking headroom
  • DDR3L 1866 speed with CL13 timing cuts latency
  • 35 V low-voltage operation reduces heat
  • 204-pin SO-DIMM fits Late-2015 27-inch iMac
  • Engineered and tested in the USA since 1994

Targeted Mac Upgrade

This 16 GB kit uses two 8 GB DDR3L 1866 SO-DIMM modules built for the 27-inch Late 2015 iMac with Core i5 or i7 processors. It plugs directly into the 204-pin slots without any configuration changes.

Low-Profile Reliability

Modules run at 1.35 V with 13-13-13-32 timings and carry no heat spreader, so they fit the slim SO-DIMM sockets inside the all-in-one chassis. Dual-channel packaging keeps bandwidth balanced for everyday workloads.

From Factory 8 GB to 16 GB

The kit doubles the common 8 GB factory configuration, giving headroom for heavier multitasking and larger project files. Users already running 16 GB or more will not see a benefit from this specific upgrade.

Highlights

  • 16 GB dual-channel kit boosts multitasking headroom
  • DDR3L 1866 speed with CL13 timing cuts latency
  • 35 V low-voltage operation reduces heat
  • 204-pin SO-DIMM fits Late-2015 27-inch iMac
  • Engineered and tested in the USA since 1994

Specifications

BrandMushkin Enhanced
SeriesiRam
ModelMAR3S186DM8G28X2
Type204-Pin DDR3 SO-DIMM
CompatibilityiMac "Core i5/i7" 27-Inch (Late 2015)
Capacity16GB (2 x 8GB)
SpeedDDR3L 1866 (PC3L 14900)
CAS Latency13
Timing13-13-13-32
Voltage1.35V
Multi-channel KitDual Channel kit
Heat SpreaderNo
Shipping weight0.11 kg
Package size163 × 135 × 15 mm

Questions about this item

Does the DDR3L 1866 (PC3L 14900) interface cap real-world bandwidth below the rated speed?

The kit runs at DDR3L 1866 with CL13 13-13-13-32 timings; actual throughput depends on the iMac memory controller and workload.

Will the 204-pin SO-DIMM modules fit the Late-2015 27-inch iMac memory slots?

Yes, the 204-pin DDR3L SO-DIMM form factor matches the two user-accessible slots in the 27-inch Late-2015 iMac.

How are the modules installed, and what step do people often miss?

Power off, unplug, lay the iMac screen-down on a soft cloth, remove the memory door, eject existing modules by spreading the clips, insert each 8 GB stick until the clips click, then replace the door before powering on.

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