4GB DDR3 1600Mhz PC3L-12800 ECC Sodimm 1Rx8 1.35V 204pin Hynix Original Part # HMT451A7DFR8A-PB DDR3-NON ECC Desktop Manufacturer Micron Memory Type DDR4

Manufacturer Micron Memory Type DDR4 Capacity 16GB Data Transfer Rate 2666MHz Bus Type PC4-21300

Manufacturer Kingston  Memory Type DDR4 Capacity 64GB  Data Transfer Rate 2666Mhz  Bus Type PC4-21300

8 GT/s QPI (2400 MHz) Socket 1366 Dimensions 1

Processor Family 1st Generation Intel Core i7 processor Nehalem Processor Segment Desktop Processor Number i7-975 Box CPU part number BX80601975 OEM Part AT80601002274AA Step Code SLBEQ Number of Cores 4 Number of Threads 8 Frequency 3

4GB DDR3 1600Mhz PC3L-12800 ECC Sodimm 1Rx8 1.35V 204pin Hynix Original Part # HMT451A7DFR8A-PB DDR3-NON ECC Desktop Manufacturer Micron Memory Type DDR4Manufacturer Hynix Memory Type DDR3 Capacity 4GB Data Transfer Rate 1600Mhz Bus Type PC3L 12800