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Which memory to use with my Z87 + core i7-4770k? (1866 1.5V vs. 2133 1.6-1.65V)

post #1 of 3
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I have 4x4gb each of the following memory sticks available - I'll be keeping one set and returning the other. Prices were nearly identical so that doesn't factor in... and hell, I'm running 16gb when I really only need 8, just in case I feel like doing a RAM drive at some point... ha!

G.SKILL Ripjaws X Series DDR3 1866 (PC3 14900) / 9-10-9-28 / 1.5V
G.SKILL Ripjaws X Series DDR3 2133 (PC3 17000) / 9-11-11-31 / 1.6-1.65V

I know Intel wants no more than 1.5V (+/-5%) for JDEC profiles, but certifies a number of 1.65V for XMP profiles. I couldn't find that specific memory listed on intel's "approved" list but there are certainly plenty there.

Will I see any noticeable performance bump from the 2133 memory running at 1.6-1.65V vs the 1866 at the "safer" 1.5v? Or should I stick with the 1866 and enjoy? FWIW, I don't plan on going for a super heavy overclock on my processor, probably only 4.2-4.3ghz depending on silicone lottery.

EDIT: here's examples of the XMP from intel... http://www.intel.com/content/www/us/en/gaming/xmp-for-core-processors.html
Edited by abt12 - 11/30/13 at 7:24pm
post #2 of 3
I wanna see this too lol. Planning on new 4770k build soon and already bought the 2133 gskill tongue.gif
Elixus
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Elixus
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Qnix Evolution 2 Thermaltake Poseidon Z Seasonic G-series 750w Fractal Design Node 804 
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post #3 of 3
If you are not overclocking then 1866MHz RAM is just fine. Lower voltage == less temperatures for the IMC and RAM sticks.
Not Fast Enough
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Not Fast Enough
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Two AP-13, two AP-14, one AP-15 Noctua NH-D15S Windows 10 Pro x64 Acer Predator XB271HU 
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