Currently I have :

CORSAIR XMS3 8GB

I am installing a new mobo and wanted to upgrade my RAM. Can I mix? I wanted to use the current 4GB sticks and add this:

CORSAIR XMS3 8GB

The first one is 2x4GB sticks and the second is 1x8GB stick. The specs are as follows:


Speed DDR3 1333 (PC3 10600)
Cas Latency 9
Timing 9-9-9-24
Voltage 1.5V – 1.65V
and
Speed DDR3 1333
Cas Latency 9
Timing 9-9-9-24
Voltage 1.5V
If not I'll just spend the 80 bucks for the 16GB