Timetec 64GB Kit (4×16GB) DDR4 2400 CL17 1.2V 260-Pin SODIMM Laptop RAM

Quad-channel 64 GB DDR4 kit for 2017 iMac

This 64 GB kit contains four 16 GB DDR4 2400 SO-DIMM modules built to the PC4-19200 standard with CL17 latency and 1.2 V operation. It targets owners of the 27-inch 2017 iMac with Retina 5K display (model identifier iMac 18,3) who need the maximum memory capacity the platform accepts. The unbuffered, non-ECC design matches the factory specification for these machines.

Sustained load behaviour on DDR4 2400 CL17

At the rated 2400 MT/s speed and CL17 timings the modules deliver consistent bandwidth during extended workloads such as video rendering, large dataset analysis or virtual machine hosting. The quad-channel population fills all four slots of the iMac 18,3, allowing the memory controller to interleave accesses across the full 64 GB without down-clocking or throttling under prolonged pressure.

Thermals, noise and power draw

Each module operates at a nominal 1.2 V within a 1.14 V to 1.26 V tolerance, drawing minimal power and producing no audible noise because the parts are purely solid-state. The low-voltage DDR4 design keeps heat output modest inside the compact iMac chassis, and the standard 30 mm by 69.6 mm form factor fits the factory SO-DIMM slots without requiring additional cooling.