Crucial 4GB (1x 4GB) CL11 DDR3L-1600 PC3L-12800 1.35V / 1.5V DR x8 204-pin SODIMM RAM Module for Mac (or PC) Brand_Upgradeable CT8G4WFD8213 Capacity 8GB (1x 8GB)

CT8G4WFD8213 Capacity 8GB (1x 8GB) Brand Crucial Speed DDR4-2133 - 2133MT/s - PC4-17000 Voltage 1

x8 configuration RAM module is for use in DDR3 compatible systems and operates at 1066 MT/s with an overall transfer rate of PC3-8500

This 16GB (2x 8GB) DDR3L 1600 MT/s Dual rank

but the effective rate is 1866 megatransfers per second (MT/s) because there are 933 million rising edges per second and 933 million falling edges per second of a clock signal running at 933 MHz

Crucial 4GB (1x 4GB) CL11 DDR3L-1600 PC3L-12800 1.35V / 1.5V DR x8 204-pin SODIMM RAM Module for Mac (or PC) Brand_Upgradeable CT8G4WFD8213 Capacity 8GB (1x 8GB)Product Overview This 4GB (1x 4GB) DDR3L 1600 MT s Dual rank, x8 configuration RAM module for Mac (or PC) from Crucial is for use in DDR3L compatible systems and operates at 1600 MT s with an overall transfer rate of PC3L 12800. This RAM module also operates at a standard voltage of 1. 35V 1. 5V with a CAS Latency of CL11, and is designed to allow you to run more applications simultaneously, switch between them faster, and provide a smoother computing