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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

  • Capacity32GB (4 x 8GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3L 1866 (PC3L 14900)
  • CAS LatencyCL13
  • Voltage1.35V
  • ECCNo

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.

Highlights

  • 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

Specifications

BrandTimetec
ModelMM-H8GD318J7D
Capacity32GB (4 x 8GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3L 1866 (PC3L 14900)
CAS LatencyCL13
Voltage1.35V
ECCNo
Buffered/RegisteredUnbuffered
Recommend UseFor Apple System

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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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