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Four green DDR4 SODIMM sticks in anti-static bags

NEMIX RAM

NEMIX RAM 32GB (4x8GB) DDR4 2666 CL19 SODIMM for iMac 27" 2019

SKU CH-HMEK-4D2MK

A 32 GB DDR4-2666 CL19 SODIMM kit of four 8 GB modules built for the 27-inch 2019 iMac

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 32GB kit expands multitasking headroom for 27-inch 2019 iMac
  • DDR4 2666 CL19 matches factory speed and latency exactly
  • 2V low-voltage modules keep thermals in check
  • 260-pin SODIMM form factor slots straight into Apple memory bays
  • Four 8GB sticks populate all slots for balanced channel performance

iMac 27" 2019 DDR4 SODIMM kit

This 32 GB kit contains four 8 GB DDR4 2666 SODIMM modules built for the Apple iMac 27-inch Retina 5K Early 2019 model 19,1. Each stick runs at 1.2 V with CL19 latency and uses a 260-pin unbuffered non-ECC layout. The modules are tested for compatibility with that specific all-in-one desktop.

Suits owners of that exact iMac needing maximum

Buyers with any other Mac, a Windows laptop or a desktop motherboard should look elsewhere because the kit is validated only for the 2019 27-inch iMac. Systems that require ECC, registered DIMMs or a different pin count cannot use these modules.

Four 260-pin DDR4 2666 CL19 modules at 1.2 V

The kit delivers 32 GB through four dual-rank 2Rx8 SODIMMs rated PC4-21300. This specific speed, voltage, latency and pin configuration is the deciding factor for installation in the supported iMac.

How it compares

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

Price $185.99
Cheaper than about 59% 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 $5.81 per GB
Cheaper than about 67% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineApple iMac/Mac Mini Compatible Series Memory
Model nameApple DDR4 2666 MHz Non-ECC Unbuffered SODIMM
Part numberMS21300-828K4
Total capacity32 GB (4 × 8 GB)
Product type260-Pin DDR4 SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple
In the box
Included items32 GB (4 × 8 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN Non-ECC Unbuffered SODIMM KIT

Questions about this item

How much memory does the 32GB kit with four 8GB DDR4 2666 CL19 SODIMM modules provide for the iMac 27 2019?

The kit installs 32GB total across the four slots of the iMac 27 2019, using DDR4 2666 CL19 2Rx8 modules that match the system's PC4-21300 specification.

What thermal or acoustic impact should I expect from the 1.2V DDR4 2666 SODIMM kit running continuously in the iMac 27 2019?

The modules operate at 1.2V without heat spreaders and draw standard SODIMM power, so the iMac's existing cooling handles sustained loads without added fan noise.

Which specific iMac model must I already own for this 260-pin DDR4 2666 SODIMM kit to be compatible?

This kit is built for the Apple iMac with Retina 5K display 27-inch Early 2019 model 19,1, matching its DDR4 2666 PC4-21300 SODIMM requirement.

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