Product Review

OWC RECOMMENDED MEMORY UPGRADES:  iMac 5K comes with 4 memory slots supporting up to 16GB per slot. iMac 5K supports 64GB total memory,  Install in pairs (2 modules at a time) for the best performance, iMac 5K comes with 8GB (4GB x 2) in its minimum stock configuration.  Technology: DDR4 SO-DIMM 260 Pin  Density: 16GB (16384MB). RoHS: Yes. Pin Count: 260-pin. Op. Temp.: 0C to +85C. Data Rate: DDR4-2400. Speed: PC4-19200  CL: 17. Voltage: 1.2V. ECC: Non ECC. Module Ranks: Single Rank. Low Noise 8-Layer PCB  Meets and/or Exceeds Apple/Intel Specifications.  RoHS Certified. Free Installation Videos & Manuals. Warranty Safe Upgrade.  OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program