I played with rblaes_99's memory kit on my FTW motherboard and had a little fun.
First boot, tried to just send it with XMP 1 profile (5333MHz), CPU at default settings. Windows loaded, but crashed right after logging in. So no go there.
Then I tried the 5066 setting, but it changed my bclk to 100.7. I tried to run a 52x multiplier on 1-6 core utilized, 51x on 7 and 50x on 8. That got me this:
It was pretty stable, but not terribly impressive in benchmarks because I couldn't get my CPU back up to 5.3GHz. So then I tried to fix the bclk back to 100.0 and set my CPU multipliers at 53x (1-4), 52x (5-6), and 51x (7-8). Then the memory was table at 5066MHz, with 20-30-30-50 for timings:
Not too shabby, but Time Spy and Port Royal didn't really show any advantage at all to this (gpu scores almost identical to before and CPU score was lower because I couldn't run 5.3GHz all-core, which I was running for Time Spy benchmarks before). Being that my primary focus is gaming, there may be some other apps where the boost in read/write speed is helpful. For me, I get better stability and gaming performance (allowing my CPU more overclocking stability primarily) with my 3733MHz gear 1 memory (16-16-16-39) that gets about 54700MB/s on read and 48ns for latency on the aida-64 test. Also, it's 32GB on two stick and completely stable, so it really is hard to beat.
I also got this to boot but it had some errors on a stability test:
Also, I have no idea how my read speed only went up that small amount from the 3733MHz stuff. How is that possible? Shouldn't that be much higher? Was this less stable that I thought even when I didn't get any errors or crashing?
TLDR: Confirmation that you need over 5000MHz and some tight timings to do better than gear 1 @ 3733MHz, cl16. I'm not sure what that number is, but it seems high. I would think at least 5333MHz cl18 would be required.