MacMemory Net Ramjet 8GB DDR3 1867MHz PC3-14900 SO-DIMM Kit for Apple iMac Late 2015 (2X 4GB) Pair of 4GB SO-DIMM memory modules, PC3-14900, Unbuffered and nonparity, 204-pin 1867 MHz DDR3 SDRAM Tested for iMac Late 2015, iMac17,1 Model Number A1419 EMC 2834 Apple Order No. MK462LL/A (3.2 GHz with AMD Radeon R9 M380), MK472LL/A (3.2 GHz with AMD Radeon R9 M390), MK482LL/A (3.3 GHz with AMD Radeon R9 M395) Optimized and rigorously tested for Macs All Ramjet products are sold exclusively by the Ramjet Store