Guys, here's the problem:
For over a decade, memory chips haven't really been able to break 8.5 nanoseconds by very much, regardless of how much $ you spend to slice or dice the frequency / latency variables.
Check out this article:
Five Overclockable 32 GB DDR3 Kits, Reviewed -
http://www.tomshardware.com/reviews/32-gb-ddr3-ram,3790.html
Here's the math on memory:
Example #1 - 1600.00(MHz) / 7(ClockLatency) = 228.57(MHz) / 2(DoubleDataRate) = 114.29(MHz) then 1(Second) / 114.29(MHz) = 8.75nS (nanoSeconds)
Example #2 - 1866.67(MHz) / 8(ClockLatency) = 233.33(MHz) / 2(DoubleDataRate) = 116.67(MHz) then 1(Second) / 103.67(MHz) = 8.57nS (nanoSeconds)
Example #3 - 2133.33(MHz) / 9(ClockLatency) = 237.04(MHz) / 2(DoubleDataRate) = 118.52(MHz) then 1(Second) / 109.09(MHz) = 8.44nS (nanoSeconds)
Example #4 - 2400.00(MHz) / 11(ClockLatency) = 218.18(MHz) / 2(DoubleDataRate) = 109.09(MHz) then 1(Second) / 109.09(MHz) = 9.17nS (nanoSeconds)
Example #5 - 2800.00(MHz) / 12(ClockLatency) = 233.33(MHz) / 2(DoubleDataRate) = 116.67(MHz) then 1(Second) / 116.67(MHz) = 8.57nS (nanoSeconds)
Faster memory is selling bandwidth. Overvolting, overclocking and / or tightening up secondary and terciary timings can hack the data slightly, but 8.5nS will remain hard to break until the memory chip manufacturers have their next technological breakthrough. Regardless, the most important factor is to have enough memory. Beyond that, memory has little effect on overall system performance.
Remember that on most computers, unless you run software that specifically requires a page file (swap file), if you have 12GB or more of memory, you can set your page file to zero. This accelerates the system because your CPU and drive don't waste read / write cycles, which also extends the life of your SSD. It's better to put the money in a better cooler to overclock your K series CPU, and / or overclock a better GPU.
CT