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Four green DDR3L SODIMM sticks with black chips and gold contacts

Timetec

Timetec 32GB (4x8GB) DDR3L 1866MHz CL13 1.35V 204-Pin SODIMM for Apple iMac 27-inch Late 2015

SKU CH-RG2S-Q8EBG

32 GB DDR3L kit (four 8 GB SODIMMs) at 1866 MHz, CL13 and 1.35 V for 27-inch Late 2015 iMac

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3L 1866 (PC3L 14900)
  • CAS latencyCL13
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Recommended forFor Apple System

Capacity 32GB (4 x 8GB)

  • 32 GB kit expands multitasking headroom on compatible iMacs
  • DDR3L 1866 MHz CL13 timing delivers responsive memory performance
  • Low 1.35 V operation reduces power draw and heat
  • 4 × 8 GB unbuffered SODIMMs populate all 204-pin slots
  • Validated for iMac 27-inch Late 2015 Retina 5K models

32GB DDR3L SODIMM kit for 27-inch iMac

This Timetec kit supplies 32 GB of DDR3L memory in four 8 GB SODIMM modules. It is built for the 27-inch iMac with Retina 5K display released in late 2015. The modules run at 1866 MHz with CAS latency 13 and operate at 1.35 V. They are unbuffered, non-ECC and use the 204-pin form factor.

Suited for owners upgrading compatible 27-inch

The kit matches the specifications listed for iMac models MK462LL/A, MK472LL/A, MK482LL/A and build-to-order Core i7 configurations identified as iMac 17,1. It is not for systems that need a different module count, a different voltage, a different pin layout or a different DDR generation.

DDR3L 1866 MHz CL13 1.35 V 204-pin SODIMM

The decisive specification is the combination of DDR3L 1866 MHz speed, CL13 latency, 1.35 V voltage and 204-pin SODIMM form factor. Only Macs that accept this exact electrical and physical profile will recognise and run the memory at its rated settings.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $60.99
Cheaper than about 54% of the 2,079 comparable items (median $70.99).
Total capacity 32 GB (4 × 8 GB)
Higher than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $1.91 per GB
Cheaper than about 96% of the 1,886 comparable items (median $5.94 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 nameTimetec
Model nameMM-H8GD318J7D
Total capacity32 GB (4 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Memory
CAS latencyCL13
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.35 V
Compatibility
Recommended forFor Apple System

Other versions of this model

5 more in the same range

Questions about this item

Will the 30 mm height of these SODIMMs fit inside the 27-inch Late 2015 iMac?

The modules measure 30 mm high by 67.6 mm long, matching the standard 204-pin SODIMM form factor used in the iMac 17,1.

What is the correct installation sequence for all four slots on the iMac 17,1?

Power down, unplug, lay the iMac face-down on a soft cloth, remove the memory access door with a screwdriver, eject any existing modules by spreading the side clips, then insert each 8 GB stick at a slight angle until the clips snap shut — fill all four slots for the full 32 GB.

Do these DDR3L 1866 modules require any firmware update or voltage adjustment after installation?

No — they run at the standard 1.35 V DDR3L voltage and CL13 timing, so the iMac 17,1 recognises them automatically at 1866 MHz without BIOS or EFI changes.

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