*REAL WORLD* difference between CAS10 and CAS9 (for gaming)

snitzle

Reputable
Dec 27, 2014
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4,510
I recently bought a single stick of 8GB HyperX FURY DDR3 1866, CL10, 1.5V via a combo deal through Newegg. But it seems that in nearly all of Tom's System Builds he uses the GSkill (Ripjaws) memory, DDR3 2133 at 9,11,10,28 timings.

Question is: Is there really a noticeable, real world difference between CL10 and CL9 in terms of gaming? Am I better off just buying another HyperX FURY 8GB stick to match the one I have, or should I get the 2x4GB GSkill kit that Tom likes and save the HyperX stick for another build?

Thanks!