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Two green DDR4 SODIMM modules with gold contacts and black chips

Timetec

Timetec 32GB Kit (2×16GB) DDR4 2400 CL17 1.2V SODIMM for 2017 iMac 18,1/18,2/18,3

SKU CH-1WZX-7VRD8

A 32 GB DDR4 2400 CL17 SODIMM kit for 2017 iMac 18,1, 18,2 and 18,3 models

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Product type260-Pin DDR4 SO-DIMM

Capacity 32GB (2 x 16GB)

  • 32 GB total capacity for demanding workflows with 2 × 16 GB modules
  • DDR4 2400 speed moves data quickly at PC4-19200 rate
  • Low 1.2 V operation reduces heat and power draw
  • CL17 latency keeps response tight under load
  • Validated for 2017 iMac 18,1 / 18,2 / 18,3 models

Compatible 32GB DDR4 kit for 2017 iMac

This Timetec kit supplies 32GB of DDR4 2400 memory in two 16GB SO-DIMM modules built to the PC4-19200 standard. It matches the 260-pin, 1.20V, CL17 unbuffered non-ECC specification required by iMac models 18,1, 18,2 and 18,3. The modules are designed for Apple's 21.5-inch and 27-inch 2017 iMacs including Retina 4K, Retina 5K and non-Retina configurations.

Low-voltage operation keeps thermals modest

Each module runs at 1.20V, the standard DDR4 voltage, so power draw and heat output remain low during typical workloads. With no ECC or registered circuitry the electrical load is minimal and the sticks produce no audible noise. Normal use such as application loading, multitasking and media editing stays within the thermal envelope of the iMac's existing cooling system.

Tested component-level validation improves stability

The manufacturer states that every module is tested at component level for voltage tolerance, temperature resistance, signal integrity and software compatibility. This validation aims to reduce the chance of boot failures, kernel panics or data corruption after installation. No extra software, heat spreaders or RGB lighting are included; the benefit is confined to verified Mac compatibility and reliable operation at the rated 2400MHz CL17 speed.

How it compares

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

Price $137.99
Pricier than about 68% of the 2,079 comparable items (median $70.99).
Total capacity 32 GB (2 × 16 GB)
Higher than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $4.31 per GB
Cheaper than about 79% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameTimetec
Model nameMR-H16D424S7E
Total capacity32 GB (2 × 16 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

Other versions of this model

5 more in the same range

Questions about this item

How do I install the two 260-pin DDR4 SODIMM modules in my 2017 iMac, and what step is often missed?

Remove the power cord, open the memory door with a screwdriver, eject the old modules by pulling the side levers, insert both 16GB sticks until they click, then close the door before reconnecting power — many forget to reseat the door latch fully.

What maintenance or replacement will this 32GB kit need later?

No routine maintenance is required; the unbuffered non-ECC DDR4 modules have no moving parts. Replacement is only needed if a module fails, which is rare at the rated 1.20V and CL17 operation.

What limit appears first under sustained heavy workloads on these CL17 2400MHz modules?

The CAS latency of 17 and 2400MHz data rate set the throughput ceiling; sustained loads hit the fixed timing budget before thermal limits on these 1.2V SO-DIMMs.

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