Lowering timings

You need to check the IC on the sticks. See if the chips are on one side of the RAM pcb or both by looking down side of IHS.
 
IMO unless your trying to find that last 1% for a benchmark world record its rarely worth going mad tweaking RAM there are moderate gains from some minor tweaking but it steeply tapers off.

I'm a little behind the curve with the latest X99/DDR4 stuff but typically with Intel platforms and DDR3 the best "balanced" timings were around 2133MHz CAS9 (9-10-10-21 w/ T1 CMD rate) that isn't to say other setups aren't faster, especially in certain areas but over a broad range of applications gaming, desktop, compute/encoding, etc. etc. you typically get the most balanced performance around there.
 
Teamgroup xtreem 2666 kit by any chance ?

My kit would tighten but not a lot , not a great kit for overclocking , just looks evil and is nippy

yes i have been told the black pcb with chips down one side is good to lower timings,

was your green pcb?
 
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