Ok, RAM specs are: "High-performance 8GB Vengeance Dual Channel Kit, 1600MHz, 9-9-9-24, 1.5V" so your CPU-Z RAM readout matches the specs as far as timings. Good. You'll need to crank it from 1333 to 1600 but that's just a BIOS setting.
So not really much more optimization you can do unless you try changing down to 8-8-8-24 and running memory + stability tests to see if your system can tolerate the slightly speedier settings.
One note: You may find that reaching 1600 MHz on your DDR3 will require some voltage tweaking. I could never get my nominally-1600 MHz DDR3 to work at 1600, I had to be satisfied with DDR3-1333 mode with tight timings.