I would rather have 1333 6-6-6 over 1800 8-8-8 anyday. But I am an AMD RAM guy mostly 
I never noticed much of a differnce on any of them for speed. Once you have enough bandwidth more does not help, only latencies. it is usually easier to get tighter than it is faster IME to lower them.
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"Don't You understand? This is Greek to me! Except I spek Greek, this is like Aramaic to me, and not the Western Dialect I can read a little." - Dr. Walter Bishop
Special relativity is not "Eat Two Big Macs."
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