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Four green DDR3 SODIMM sticks with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 32GB (4x8GB) DDR3 1866 PC3-14900 1.35V 204-Pin Non-ECC SODIMM Kit for iMac 27" Late 2015

SKU CH-643B-0GGXA

32 GB DDR3 1866 kit of four 8 GB SODIMMs at 1.35 V for 27-inch 2015 iMac with Retina 5K

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL13
  • Buffer typeUnbuffered
  • Rated voltage1.35 V

Capacity 32GB 4X8GB

  • 32 GB kit expands iMac memory for heavier workloads
  • DDR3 1866 MHz speed matches factory specification for Late 2015 model
  • 35 V low-voltage modules reduce power draw and heat
  • 204-pin SODIMM form factor fits the iMac 27-inch memory slots directly
  • CL13 CAS latency supports responsive system operation

32 GB DDR3 kit for 27 inch Late 2015 iMac

This 32 GB kit contains four 8 GB DDR3 SODIMM modules built for the 27 inch iMac released in Late 2015. It targets owners who need the maximum supported memory for intensive creative workloads or virtualisation on that specific model.

DDR3 1866 CL13 1.35 V SODIMM specification

The modules run at DDR3 1866 (PC3-14900) with CL13 latency and 1.35 V operation in a 204 pin unbuffered non ECC SODIMM form factor. Matching these exact ratings is the single requirement for reliable operation in the Late 2015 iMac.

Low voltage unbuffered design runs cool and silent

With no heat spreader and a 1.35 V supply the kit draws minimal power and produces no audible noise during normal use. The low voltage DDR3 chips keep thermals well within the iMac's slim enclosure limits.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $75.99
Cheaper than about 71% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.37 per GB
Cheaper than about 92% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineApple iMac/Mac Mini Compatible Series Memory
Model nameApple DDR3 1866 MHz Non-ECC Unbuffered SODIMM
Part numberMS14900-828LK4
Total capacity32 GB (4 × 8 GB)
Product type204-Pin DDR3 SODIMM
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL13
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.35 V
Compatibility
Compatible systemsApple
In the box
Included items32 GB (4 × 8 GB) DDR3 1866 MHz PC3-14900 2Rx8 1.35 V 204-PIN Non-ECC Unbuffered SODIMM KIT

Questions about this item

How does the 1866 MT/s speed translate once the four modules are installed in the iMac?

The kit runs at DDR3 1866 (PC3-14900) with CL13 latency, giving the Late 2015 27-inch iMac the full rated bandwidth its memory controller expects.

What does the PC3-14900 designation cap in practice for this kit?

PC3-14900 certifies 1866 MT/s at 1.35 V; the iMac's firmware locks the modules to that speed and voltage, so they cannot run faster or at a higher voltage.

Will the 204-pin SODIMM modules physically fit the Late 2015 27-inch iMac?

Yes, each 8 GB module is a standard 204-pin DDR3 SODIMM without a heat spreader, matching the four SO-DIMM slots in the 27-inch iMac Late 2015.

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