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Four green DDR3L SODIMM modules with black chips, 204-pin, 32GB kit

Avarum

Avarum 32GB Kit (4×8GB) DDR3L 1866 SODIMM for iMac 27" Late 2015

SKU CH-AQ88-0N05W

32 GB kit of four 8 GB DDR3L 1866 SO-DIMM modules at 1.35 V and CL13, built for the 27 inch 2015 iMac Retina 5K

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3L 1866 (PC3L 14900)
  • CAS latency13
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Product type204-Pin DDR3 SO-DIMM
  • 32 GB total capacity from four 8 GB modules
  • DDR3L 1866 speed with CL13 latency for responsive performance
  • Low 1.35 V voltage reduces power draw and heat
  • 204-pin SO-DIMM form factor fits iMac 27" Late 2015 Retina 5K
  • Dual-rank 2Rx8 organisation supports full memory bandwidth

32GB DDR3L 1866 Kit for iMac

This Avarum kit supplies 32GB of DDR3L 1866 memory in four 8GB SO-DIMM modules. It is built to the 204-pin standard and runs at 1.35V with a CAS latency of 13. The kit is designed specifically for the Apple iMac 27-inch Late 2015 Retina 5K model.

Ideal for iMac 27" Late 2015 owners

This memory suits anyone upgrading that exact iMac to its maximum supported capacity using unbuffered, non-ECC modules. It is not for users of other iMac sizes, other model years, or machines that require ECC or registered DIMMs. Builders working on Windows laptops or desktops should verify their platform accepts DDR3L SO-DIMMs at this speed and voltage before purchasing.

DDR3L 1866 at 1.35V 204-pin SO-DIMM

The decisive specification is the DDR3L 1866 (PC3L 14900) rating on a 204-pin SO-DIMM operating at 1.35V. Only systems that natively support this exact speed, voltage, and form factor will recognise the modules and run them reliably.

How it compares

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

Price $98.99
Cheaper than about 68% 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.
CAS latency 13
Lower than about 86% of the 483 comparable items (median 22).
Price per GB $3.09 per GB
Cheaper than about 89% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameAvarum
Model nameAvarum-3L81866-SODIMM-4
Total capacity32 GB (4 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Memory
CAS latency13
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.35 V

Questions about this item

How can I confirm the memory is running at 1866 MHz with CL13 after installation?

Open the System Report in macOS and check the Memory section; each slot should show 8 GB DDR3L at 1866 MHz with a CAS latency of 13.

The kit contains four 8 GB modules — do I need any extra parts or tools to install them?

The box includes only the four 204-pin DDR3L SODIMM modules; you will need a compatible Torx screwdriver to open the iMac memory compartment, which is not supplied.

I see this 32 GB kit listed as 4 × 8 GB — is there a different capacity or speed option for the same iMac model?

This specific kit is the 32 GB (4 × 8 GB) DDR3L 1866 variant; other capacities or speeds would carry a different part number and are not covered by this listing.

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