Crucial 4GB (1x 4GB) DDR3L-1066 PC3L-8500 1.35V / 1.5V DR x8 ECC 240-pin EUDIMM RAM Module Model_Mac_Mini_6_1 but the effective rate is

but the effective rate is 533 megatransfers per second (MT/s) because there are 266 million rising edges per second and 266 million falling edges per second of a clock signal running at 266 MHz

2xCT25664AA800 Capacity 4GB (2x 2GB) Brand Crucial Speed DDR2-800 - 800MT/s - PC2-6400 Voltage 1

CT4G3S160BM Capacity 4GB (1x 4GB) Brand Crucial Speed DDR3L-1600 - 1600MT/s - PC3L-12800 Voltage 1

5V Technology DDR3L Error Correction Non-ECC Signal Processing Unbuffered Form Factor 204-pin SODIMM Ranks Single rank Configuration 8-chip 256M x8 Pieces in Kit 2 Compatibility

MT/s and MHz are used interchangeably

Crucial 4GB (1x 4GB) DDR3L-1066 PC3L-8500 1.35V / 1.5V DR x8 ECC 240-pin EUDIMM RAM Module Model_Mac_Mini_6_1 but the effective rate isProduct Overview Dramatically improve performance and handle larger user and application workloads in your mission critical workstations and servers with this 4GB (1x 4GB) DDR3L 1066 MT s 240 pin EUDIMM RAM module from Crucial . This Dual rank, x8 configuration RAM module is for use in DDR3L compatible systems and operates at 1066 MT s with an overall transfer rate of PC3L 8500. This RAM module also operates at a standard voltage of 1. 35V 1. 5V and