16GB (2 x 8GB) ddr3 1600mhz Kingston Hyper X blu KHX16C10B1K2/16X

These are two good working RAM sticks. I'm selling because I bought them to do a quick upgrade to an old rig but the XMP profile wouldn't work and they were stuck at 1333mhz. I blame the Intel desktop board I put them in which has a very limited bios. I put a picture from Kingston's website of the specs of these dims as the last photo. You can see that they are clocked at 1333mhz but should go up to 1600 with XMP. So I'd advise buying if you've got a Z type motherboard that allows you to set the ram speed, or are ok with these dimms running at 1333mhz.