The RAM was used by me and works perfectly well. I'm selling because I recently upgraded my motherboard and don't need these anymore. The description on my Newegg invoice lists these as:CORSAIR Vengeance Pro 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 Desktop Memory Model CMY8GX3M2A1866C9 (Silver)
DDR3 1866
Timing 9-10-9-27
Cas Latency 9
Voltage 1.5V
Feel free to ask any questions.
Phil