Lot of EIGHT SK hynix 8GB server memory modules — 64GB total. All are 8GB 2Rx8, DDR3-1600, ECC, 240-pin. IMPORTANT — these are ECC UNBUFFERED (UDIMM), shown by the trailing "E" in PC3-12800E. They are NOT Registered (RDIMM) and NOT Load-Reduced (LRDIMM). Unbuffered ECC goes in boards that specifically take it — many Supermicro workstation and entry-server boards, and some Dell/HP/Lenovo models. Please confirm your motherboard takes unbuffered ECC before buying. PLEASE ALSO NOTE — THIS IS A MIXED-VOLTAGE LOT: - 4 modules are PC3L-12800E (1.35V low-voltage), part HMT41GE7AFR8A-PB / HMT41GE7BFR8A-PB - 4 modules are PC3-12800E (1.5V standard), part HMT41GE7MFR8C-PBThe PC3L modules will run at either 1.35V or 1.5V; the PC3 modules require 1.5V. If you need a uniform low-voltage set, this lot is not it. Some modules carry Supermicro "WARRANTY VOID IF REMOVED" asset labels. TESTED AND WORKING. These were pulled from a good, running server — not from a dead or faulty machine — and are confirmed working. The modules are clean, with no bent pins or visible damage. Ships in anti-static packaging, carefully packed.