Samsung 16GB (2x 8GB) DDR3-1066 PC3-8500 1.5V QR x8 ECC Registered 240-pin RDIMM RAM Kit Model_Mac_Book_5_1 but the effective rate is

but the effective rate is 400 megatransfers per second (MT/s) because there are 200 million rising edges per second and 200 million falling edges per second of a clock signal running at 200 MHz

Dramatically improve performance and handle larger user and application workloads in your mission critical workstations and servers with this 2GB (1x 2GB) DDR2 800 MT/s 240-pin EUDIMM RAM module from Crucial

5V Technology DDR3L Error Correction ECC Signal Processing Unbuffered Form Factor 240-pin EUDIMM Ranks Single rank Configuration 9-chip 256Mx8 Pieces in Kit 1 Compatibility

CT8G3ERSLD4160B Capacity 8GB (1x 8GB) Brand Crucial Speed DDR3L-1600 - 1600MT/s - PC3L-12800 Voltage 1

Samsung 16GB (2x 8GB) DDR3-1066 PC3-8500 1.5V QR x8 ECC Registered 240-pin RDIMM RAM Kit Model_Mac_Book_5_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 16GB (2x 8GB) DDR3 1066 MT s 240 pin RDIMM RAM kit from Samsung . This Quad rank, x8 configuration RAM kit is for use in DDR3 compatible systems and operates at 1066 MT s with an overall transfer rate of PC3 8500. This RAM kit also operates at a standard voltage of 1. 5V and is designed to allow