http://www.asus.com/Motherboards/Z87A#support_QVL Check out what memory has been tested with the board.
Normally I would push http://www.newegg.com/Product/Product.aspx?Item=N82E16820147096 but that isn't sold anymore. That stuff was the best bang for the buck of any DDR3 out there. Picked up 6X2 packs of it for $220, and every stick worked, and is still working great.
If I was doing a new build, likely this would be my choice for now: http://www.newegg.com/Product/Product.aspx?Item=N82E16820148656
1.35V, good timings, not more I could ask really. If you can stay at 1.5V or lower mem voltage on an Intel board, it is just better all around.
If you want to overclock memory, then I can't offer advice. Ever since Sandy Bridge, memory overclocking is something I have not worried with. That Samsung would crank up to 2000 at 1.5-1.55V from 1600, and that was great. Too bad it made little difference as far as performance was concerned. Main thing I worry about now is stability, and does it run cool. The sweet spot for DDR3 on most systems is 1600-1866. Above 1866, actual memory performance essentially flatlines as timings have to be loosened up to compensate for the speed. (especially at the ~$80 price point)
You have a "K" CPU so no worries about BCLK or memory keeping up. How high have you clocked that 4670K?
Edited by dpunisher, 29 July 2013 - 08:46 AM.
I am a retired Ford tech. Next to Fords, any computer is a piece of cake. (The cake, its not a lie)
3770K @4.5, Corsair H100, GTX780, 16gig Samsung, Obsidian 700 (yes there is a 700)