I recently bought a Clevo W350STQ. i5 4200m & GTX765M.
This came with 2 x 2GB Kingston HyperX 1600Mhz RAM.
(JEDEC standard 1.5V (1.425V ~ 1.575V) Power Supply
VDDQ = 1.5V (1.425V ~ 1.575V)
800MHz fCK for 1600Mb/sec/pin
8 independent internal bank
Programmable CAS Latency: 11, 10, 9, 8, 7, 6...