2x8gb sticks, 1600hx, run a 4ghz ram drive, will be bang tidy.
i read somewhere that the bigger the ram stick the slower the performance, unless you buy silly price ram.
the cheap 16gb pack are £100 so i would guess a performance set would be £200?
would i not in that case be better off with a £50 pack of ram and 2 x 120gb SSD in raid