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Two green DDR4 SODIMM modules with black chips on a plain background

Timetec

Timetec 16GB (2x8GB) DDR4 2400 CL17 SODIMM for 2017 iMac

SKU CH-9922-RB60T

A 16 GB dual-channel DDR4 2400 CL17 SODIMM kit built for 2017 iMac 21.5-inch and 27-inch models

  • Capacity16GB (2 x 8GB)
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.20V
  • ECCNo

Capacity 16GB (2 x 8GB)

  • 16 GB kit (2 × 8 GB) doubles capacity for 2017 iMac
  • DDR4 2400 MHz PC4-19200 matches factory speed specification
  • CL17 CAS latency keeps timing tight for responsive multitasking
  • 20 V low-voltage DDR4 reduces power draw and heat
  • 260-pin SODIMM form factor fits 21.5-inch and 27-inch 2017 iMac slots

Compatible 2017 iMac upgrade

This 16 GB kit contains two 8 GB DDR4 SODIMM modules built with Hynix ICs. It is validated for the 21.5 inch and 27 inch 2017 iMac models listed by Apple part numbers including MMQA2LL/A, MNDY2LL/A, MNE92LL/A and BTO configurations. The kit targets owners who want to increase memory capacity on these specific all-in-one systems.

Fits the SO-DIMM slots directly

Each module uses the standard 260 pin DDR4 SO-DIMM form factor measuring 30 mm by 69.6 mm. No adapter or bracket is required; the sticks install into the existing memory slots accessible behind the iMac memory door. The unbuffered non-ECC design matches the architecture used in the compatible iMac 18,1, 18,2 and 18,3 identifiers. Builders needing ECC or registered memory cannot use this kit.

Runs at 1.2 V with CL17 timing

The modules operate at DDR4 2400 (PC4 19200) with a CAS latency of 17 at the standard 1.20 V voltage. This voltage matches the factory specification for the supported iMacs so no additional cooling or voltage adjustment is needed. The low voltage helps keep thermal output minimal inside the sealed enclosure. Systems requiring higher frequencies or lower latencies will not benefit from this specific speed grade.

Highlights

  • 16 GB kit (2 × 8 GB) doubles capacity for 2017 iMac
  • DDR4 2400 MHz PC4-19200 matches factory speed specification
  • CL17 CAS latency keeps timing tight for responsive multitasking
  • 20 V low-voltage DDR4 reduces power draw and heat
  • 260-pin SODIMM form factor fits 21.5-inch and 27-inch 2017 iMac slots

Specifications

BrandTimetec
ModelMR-H8GD424S2E
Capacity16GB (2 x 8GB)
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
Recommend UseFor Apple System

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Questions about this item

Will the CL17 latency at 2400 MHz throttle bandwidth during sustained workloads?

CL17 at DDR4 2400 is the rated timing; the modules run at 1.20 V unbuffered and do not change latency under load.

Do the SODIMMs run hot or loud when the iMac is on all day?

The kit has no moving parts; it operates at standard 1.2 V DDR4 voltage with no fan or thermal throttle reported.

Which iMac models must I already own for this 260-pin kit to fit?

Compatible with 2017 iMac 21.5-inch (Retina 4K or Non-Retina) and 27-inch Retina 5K models listed as iMac 18,1, 18,2 or 18,3.

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