Ok.. so if I do us the 1600MHz it should run at that speed, I checked the manual, not sure where to check the motherboard's voltage.
I have a Asus P6X58D Premium. And I was looking at a
G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit F3-12800CL8TU-6GBPI (pie series) which runs at 1.6v-1.65v.
And on another note: I was wondering what does the Qualified Vendor List (QVL) mean? is it a list of memory that have been tested and will work with the the board?
if so there was a slight model code difference between the above kit and on the list, I've checked on the web and it appears to just have a color difference. F3-12800CL8T-6GBPI