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Green circuit board SODIMM module with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 CL19 2Rx8 260-pin SODIMM for Apple 27" iMac Mid 2020

SKU CH-VWKC-YEY63

8GB DDR4 2666 CL19 SODIMM upgrades 27-inch iMac Mid 2020 with 2Rx8 density

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V

Capacity 8GB

  • 8GB capacity adds responsive multitasking headroom for everyday workloads
  • 2666 MT/s DDR4 speed matches the iMac's native memory bus
  • CL19 latency keeps timing tight for stable operation
  • 2Rx8 dual-rank organisation maximises density on a single module
  • 2 V low-voltage design reduces power draw and heat output

iMac Mid 2020 DDR4 SODIMM

This 8 GB DDR4 2666 CL19 SODIMM is built for the 27 inch iMac Mid 2020 models iMac 20,1 and iMac 20,2. It uses a 260 pin unbuffered non ECC layout at 1.2 V. The module suits owners who want a straightforward memory upgrade for these all in one desktops.

DDR4 2666 speed ceiling

The DDR4 2666 PC4 21300 interface caps transfer rates at the JEDEC standard for this generation. CL19 latency is fixed by the SPD profile and cannot be tightened without platform support that these iMacs do not expose. Buyers needing higher bandwidth or lower latency than the spec allows must choose a platform that supports faster memory standards.

Major OEM chips no spreader

Chips come from Samsung Micron or Hynix depending on supply. The stick has no heat spreader so it fits the tight SODIMM slots inside the iMac without clearance issues. The 2Rx8 organisation works with the memory controller in these models. Systems that require registered or ECC modules cannot use this stick.

How it compares

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

Price $39.99
Cheaper than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.00 per GB
Cheaper than about 77% 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 numberMS21300-828K1
Total capacity8 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 items8 GB (1 × 8 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN Non-ECC Unbuffered SODIMM

Other versions of this model

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Questions about this item

Is this 8 GB DDR4 2666 CL19 module the right capacity for my 27" iMac Mid 2020?

Yes, the 8 GB DDR4 2666 CL19 SODIMM matches Apple's specification for the 27" iMac Mid 2020 and installs in the user-accessible memory slots.

What does the 2666 MT/s speed deliver once the module is installed in the iMac?

The module runs at 2666 MT/s (PC4-21300) with CL19 latency, providing the standard bandwidth and timing the 27" iMac Mid 2020 memory controller expects.

Will the 260-pin DDR4 SODIMM interface work without issues in the 27" iMac Mid 2020?

The 260-pin DDR4 SODIMM form factor is the exact physical and electrical interface used by the 27" iMac Mid 2020, so it seats directly in the SO-DIMM slots.

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