Jimpz,
Too many people do look at the QVLs and end getting screwed, as was in my info thread for example say you see a set of 2666 - 16GB, it doesn' say anything about what CPU the sticks on the QVL was tested with, and if you want to run 2666 at 2666 you need a K model CPU, so where does leave you if you have a 4130 - it leaves out of pocket a fair chunk of money or the opprotuning to take these nice expensive sticks and run them at 1600....or for many novice builders it say that 1866 or 2133 sticks are good (because they 'tested' them, they don't say at the mobo default of 1333, so yes they work, again expensive sticks, at 1333......but the BIOS programming to handle XMP isn't ready, and again - you're stuck....unless you know something of DRAM, and too few people do....I've contacted tech support on occasion with some of the DRAM manufacturers and (in particular) asked about what's their preferred tRFC for various sets, many times they don't have any idea of what I'm talking about, and those that do know what the tRFC or tFAW or other advanced timings are don't know what to use.