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Four green DDR4 SODIMM modules with black chips in a clear tray

Timetec

Timetec MR-H8GD424S2E 32GB Kit (4×8GB) DDR4 2400 CL17 SODIMM for iMac 18,3

SKU CH-MQDB-0FWMF

A 32 GB kit of four 8 GB DDR4 2400 CL17 SODIMM modules built for the 2017 27‑inch iMac 18,3

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forFor Apple System

Capacity 32GB (4 x 8GB)

  • 32 GB kit (4 × 8 GB) expands iMac 18,3 memory capacity
  • DDR4 2400 MHz PC4-19200 matches factory speed specification
  • CL17 CAS latency delivers responsive data access
  • 2 V operation keeps power draw low
  • 260-pin SODIMM form factor fits 27-inch 2017 iMac slots

32GB DDR4 Kit for 2017 iMac 27-inch

This 32GB kit contains four 8GB DDR4 2400 SODIMM modules built for the 2017 iMac 27-inch with Retina 5K display (model ID iMac 18,3). It runs at 1.2V with CL17 latency and uses 260-pin unbuffered non-ECC memory. The kit targets owners of this specific iMac who want the maximum supported memory configuration.

Suits iMac 18,3 owners; not for other Macs or PCs

The modules are validated for the iMac 18,3 configurations listed, including 3.4 GHz, 3.5 GHz, 3.8 GHz Core i5 and 4.2 GHz Core i9 models. Buyers with different iMac years, smaller screen sizes, MacBook models, or Windows laptops requiring DDR4 SODIMM should look elsewhere because the compatibility testing is specific to this 2017 27-inch Retina 5K iMac.

260-pin DDR4 2400 SODIMM form factor decides fit

The memory uses the 260-pin DDR4 SO-DIMM physical interface operating at 2400MHz (PC4-19200) with CL17 timing at 1.2V. If your system requires a different pin count, DDR generation, voltage, or form factor, this kit will not install or function correctly.

How it compares

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

Price $153.99
Pricier than about 71% 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 $4.81 per GB
Cheaper than about 69% 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 nameMR-H8GD424S2E
Total capacity32 GB (4 × 8 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forFor Apple System

Other versions of this model

5 more in the same range

Questions about this item

Does this 32 GB kit fit the four SO-DIMM slots of an iMac 18,3?

Yes, the kit contains four 8 GB modules that match the 260-pin DDR4 SO-DIMM form factor used in the 27-inch 2017 iMac 18,3.

Will these CL17 modules run stably alongside the original Apple memory if I keep some of it?

The iMac 18,3 has four slots; this kit fills all of them, so no original modules remain installed.

How can I confirm the memory is recognised at 2400 MHz after installation?

Open About This Mac or System Report and verify the speed shows 2400 MHz for each of the four 8 GB modules.

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