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Green circuit board with black chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR3 1866MHz CL13 1.35V 204-Pin SODIMM iMac Late 2015 27" memory upgrade

SKU CH-30A5-8KGM1

A 16 GB DDR3 SODIMM running at 1866 MHz with CL13 latency and 1.35 V for the 27-inch iMac Late 2015

  • Total capacity16 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL13
  • Buffer typeUnbuffered
  • Rated voltage1.35 V
  • 16 GB capacity for demanding macOS workloads
  • 1866 MHz DDR3 speed matches iMac Late 2015 spec
  • 35 V low-voltage design reduces heat and power draw
  • CL13 CAS latency for responsive system performance
  • 204-pin SODIMM form factor fits 27-inch iMac 17,1 slot

16GB DDR3 SODIMM for iMac Late 2015

This 16 GB DDR3 1866 MHz module is built specifically for the Apple iMac Late 2015 27-inch Retina model 17,1. It targets owners who need a single high-density stick to reach the platform maximum without mixing densities. The 204-pin SO-DIMM form factor and 1.35 V operation match the factory specification exactly.

CL13 timing and 2Rx8 organisation

The module runs at CAS latency 13 with a dual-rank 2Rx8 layout, which the iMac memory controller expects for stable operation at PC3-14900 speed. Major-brand Samsung, Micron or Hynix ICs are used, and every stick is stress-tested under load before shipping. No extra software or heat spreader is included because the system manages thermals internally.

Unbuffered non-ECC 204-pin build

The bare green PCB carries no heat spreader, keeping the profile thin enough for the tight iMac SO-DIMM slot. Gold-edge contacts on the 204-pin connector resist oxidation during the upgrade process. Non-ECC unbuffered design means the module works only in consumer Macs that do not require error-correcting or registered memory.

How it compares

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

Price $151.99
Cheaper than about 61% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $9.50 per GB
Typical for this category: the median of 20,941 items is $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 numberMS14900-628LK1
Total capacity16 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 items16 GB (1 × 16 GB) DDR3 1866 MHz PC3-14900 2Rx8 1.35 V 204-PIN Non-ECC Unbuffered SODIMM

Questions about this item

Will the 16GB SODIMM need any maintenance or replacement later?

DDR3 modules have no moving parts and require no scheduled maintenance; they are replaced only if a fault develops.

What limit appears first during sustained use?

The 1866MHz speed and CL13 latency set the throughput ceiling; the 1.35V supply defines the thermal boundary under continuous load.

How much noise, heat or power does the module produce running all day?

It draws 1.35V with no heat spreader, so it runs silently and adds minimal heat to the iMac Late 2015 27" enclosure.

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