DDR3-1600, PC3-12800, 1.5V, Unbuffered, Non-ECC CL9 CAS Latency, 9-9-9-24 memory timings 240 pin, gold plated, High Performance Gaming or Workstation memory Backwardly compatible with DDR3-1333, DDR3-1200 (JEDEC with memory timings @ 9-9-9-20 or better)