1.35 V & 1.5 V RAM for late 2013 iMac's | MacRumors Forums
Tecmiyo 4 Gb Ddr /ddr3 1600 Mhz Udimm Pc 3-12800u 1.35 V / 1.5 V Cl11 240 Pin 2rx8 Upgrade Module For Unbuffered Desktop Computer Memory With Two Ranks Without Ecc Gift
MacBook Pro RAM - 1.5V vs 1.35V | MacRumors Forums