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Four green DDR3 SODIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR3 1866MHz CL13 1.35V 204-pin SODIMM kit for iMac Late 2015 27

SKU CH-XPCT-KSTY4

A 64 GB kit of four 16 GB DDR3 1866 MHz CL13 SODIMM modules at 1.35 V for iMac Late 2015 27-inch models

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL13
  • Buffer typeUnbuffered
  • Rated voltage1.35 V
  • 64 GB kit expands iMac Late 2015 27" memory capacity
  • Four 16 GB modules fill every slot for maximum bandwidth
  • DDR3 1866 MHz CL13 timing matches factory specifications
  • 35 V low-voltage operation reduces power draw and heat
  • 204-pin SODIMM form factor installs directly in Apple iMac 17,1 Retina 27

Apple iMac Late 2015 27-inch upgrade

This NEMIX RAM kit delivers 64GB of DDR3 memory across four 16GB SODIMM modules. It is built for the iMac Late 2015 27-inch model identified as 17,1. The unbuffered non-ECC design matches the factory specification for this all-in-one desktop.

DDR3 1866 CL13 1.35V 204-pin SODIMM

The modules run at 1866MHz with CAS latency 13 at 1.35V. Each stick is a 2Rx8 204-pin DDR3 SODIMM using major OEM chips from Samsung Micron or Hynix. This exact speed voltage and pin count is the single specification that determines fit and stability in the target iMac.

Four-module kit fills every slot

The package provides four 16GB sticks for a total of 64GB which occupies all available memory slots in the 27-inch iMac. No heat spreaders are included keeping the low-profile form factor required by the slim chassis. The kit leaves no room for additional memory expansion.

How it compares

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

Price $571.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $8.94 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

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Specifications

Product
Brand nameNEMIX RAM
Product lineApple iMac/Mac Mini Compatible Series Memory
Model nameApple DDR3 1866 MHz Non-ECC Unbuffered SODIMM
Part numberMS14900-628LK4
Total capacity64 GB (4 × 16 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 (2 × 16 GB) DDR3 1866 MHz PC3-14900 2Rx8 1.35 V 204-PIN Non-ECC Unbuffered SODIMM KIT

Questions about this item

What does 64GB of DDR3 1866 mean for everyday use in a Late 2015 27-inch iMac?

The four 16GB modules fill every slot and give the system 64GB of addressable memory for large projects and heavy multitasking.

How does the PC3 14900 rating limit real-world throughput?

PC3 14900 is the JEDEC designation for DDR3 1866; the memory controller in the iMac sets the actual transfer ceiling.

Will these 204-pin SODIMMs fit the Late 2015 27-inch iMac without modification?

Yes, they are 204-pin DDR3 SODIMMs built to the mechanical and electrical spec for that model.

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