Corsair 64GB (2x32GB) DDR4 SODIMM 2666MHz C18 1.2V Memory for Mac Memory RAM Optimal Performance on Mac CORSAIR Mac Memory is specifically engineered and rigorously lab-tested at high stress levels and temperatures to guarantee compatibility and optimal performance on Mac systems Increase Productivity Today’s applications demand large amounts of high-performance memory to run at peak efficiency. Save time and increase your productivity by improving your system’s performance with extra memory, so you spend less time rendering and buffering – and more time working or playing. Limited Lifetime Warranty Backed by a limited lifetime warranty for your complete peace of mind, with CORSAIR’s world-class customer support ready to assist you 24/7 by phone or online. COMPATIBILITY iMac 5K Display (Mid-2017) Fan Included No Memory Series Apple SODIMM Memory Type DDR4 Memory Size 64GB Kit (2 x 32GB) Tested Latency 18-18-18-43 Tested Voltage 1.2V Tested Speed 3200MHz SPD Latency 18-18-18-43 SPD Speed 3200MHz SPD Voltage 1.2V Speed Rating 3200MHz Compatibility iMac 5K Display (Mid-2017) Package Memory Format DIMM Package Memory Pin 288