SK hynix HMA42GR7AFR4N-TF 16GB DDR4 2133MHz CL15 ECC Registered Dual Rank 1.2V 288-Pin Server RAM
- 16GB
- 288-Pin DDR4 SDRAM
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NEMIX RAM
8 GB DDR4 2400 SODIMM upgrade for 2017 27-inch iMac Retina 5K and 21.5-inch 4K models
This module is an 8 GB DDR4 2400 CL17 SODIMM built for Apple iMac 2017 27-inch Retina 5K and 21.5-inch Retina 4K systems. It runs at 1.2 V without ECC or a heat spreader. The part uses major OEM chips and fits the 260-pin slot.
Owners adding memory to a supported 2017 iMac will find the correct speed, voltage and form factor here. Builders working on non-Apple laptops or desktops that require a different DDR4 speed, rank configuration or voltage should look elsewhere.
The memory operates at DDR4 2400 (PC4-19200) with CL17 latency. If the target system demands a higher or lower data rate, this stick will not match the required specification.
| Brand | NEMIX RAM |
|---|---|
| Series | Apple iMac/Mac Mini Compatible Series Memory |
| Model | Apple DDR4 2666MHZ Non-ECC Unbuffered SODIMM |
| Part Number | MS19200-818K1 |
| Capacity | 8GB |
| Speed | DDR4 2400 (PC4 19200) |
| ECC | No |
| Buffered/Registered | Unbuffered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.20V |
| Compatible System | Apple |
| CAS Latency | CL17 |
| Heat Spreader | No |
| Type | 260-PIN DDR4 SODIMM |
| Rank | 1Rx8 |
| Features | DDR4 Non-ECC Unbuffered SODIMM Motherboard Compatible |
| Package Content | 8GB (1X8GB) DDR4 2400MHZ PC4-19200 2Rx8 1.2V CL17 260-PIN Non-ECC Unbuffered SODIMM |
This module provides a single 8 GB stick; add one or more to reach the total memory your 2017 27-inch Retina 5K model supports.
The DDR4 2400 rating means the memory runs at 2400 million transfers per second, matching the specification Apple used for these iMacs.
The 260-pin DDR4 SODIMM slot caps the module at the advertised 2400 MT/s and CL17 latency; no higher speed or lower latency is possible in this form factor.
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