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Two green circuit boards with black memory chips, no heat spreader, 260-pin DDR4 SODIMM form factor

Computer Memory Solutions

Computer Memory Solutions CM512642400SO 8GB (2x4GB) DDR4 2400 CL17 SODIMM memory upgrade

SKU CH-YWE2-CD6DT

8 GB kit of two 4 GB DDR4 2400 CL17 SODIMM modules built for the 27-inch 5K iMac (Mid 2017, Core i5 3.4 GHz)

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 8GB dual-channel kit boosts multitasking headroom for Mid-2017 iMac
  • DDR4 2400 CL17 timing matches factory memory specifications exactly
  • 2 V low-voltage operation keeps thermals in check inside the 27-inch enclosure
  • 260-pin SODIMM form factor slots straight into the four iMac memory sockets
  • Guaranteed compatibility with Apple iMac Core i5 3.4 27-Inch 5K MNE92LL/A

Compatible iMac Memory Upgrade

This 8 GB kit contains two 4 GB DDR4 SO-DIMM modules built for the Apple iMac "Core i5" 3.4 27-Inch (5K, Mid-2017) model MNE92LL/A. It runs at 2400 MHz with CL17 timing at 1.2 V. The unbuffered, non-ECC design matches the factory specification for this system.

Suitable for owners of the listed iMac

The kit fits the four SO-DIMM slots in the Mid-2017 27-inch iMac and restores the original 8 GB capacity when replacing a base configuration. Buyers who need more than 8 GB total memory should look at higher-capacity kits. Systems other than the specified iMac model are not supported by this compatibility guarantee.

DDR4 2400 CL17 260-Pin SO-DIMM

The decisive specification is the DDR4 2400 (PC4 19200) speed combined with 260-pin SO-DIMM form factor, CL17 latency and 1.2 V operation. These parameters must match the iMac's memory controller requirements for the system to recognise and run the modules correctly.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $46.99
Cheaper than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.87 per GB
Cheaper than about 67% of the 20,941 comparable items (median $8.19 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 nameComputer Memory Solutions
Model nameCM512642400SO
Total capacity8 GB (2 × 4 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple iMac "Core i5 in 3.4 27 in (5K, Mid-2017), MNE92LL/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I choose the 8 GB (2×4 GB) kit or a different capacity for my iMac?

This kit provides two 4 GB modules for a total of 8 GB. The iMac 27‑inch (Mid‑2017) supports up to 64 GB across four slots, so you can add another identical kit later if you need more memory.

What does the 2400 MHz rating mean once the modules are installed?

The memory will run at 2400 MHz (PC4‑19200) with CL17 timing at 1.2 V, delivering the standard DDR4 bandwidth for this iMac model.

Will the 260‑pin DDR4 SO‑DIMM interface work in my Mid‑2017 iMac?

Yes. The kit uses 260‑pin DDR4 SO‑DIMM modules, which is the exact form factor and generation required by the iMac 27‑inch (Mid‑2017).

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