Question 1

What's the difference between these and the other model (F4-2000C15Q-16GRK)?

It appears the timings are the same, voltage is the same, and all other Specifications appear to be the same, but these ones are more expensive.

Accepted Answer

the grk are black the grr are red just the color is different, the price is only different due to availability.

Question 2

How tall are these sticks? Will they fit under a Noctura NH-D15 CPU cooler?

Accepted Answer

they are not any taller than any other memory sticks.  installation under your cooler should not be a problem

Question 3

Does it need to be overclocked to hit 3000? or is it the stock speed?

Accepted Answer

If it's like the DDR3 sticks I have, it should be stock speed (2133 MHz).  Then activating the XMP profile in the BIOS will put all the settings and timing, and voltage to match 3000 MHz.

Question 4

With such low voltage, we should be able to lower timings while raising voltage without sacrificing frequency, right?

I'm not sure how DDR4 differs from DDR3 with regard to tolerance for voltage.

Any owners have feedback regarding this?

Accepted Answer

do NOT go over 1.35V. lots of people fried their expensive motherboards and CPUs by doing this. at 3000 MHz and CL15 this memory is plenty fast. the best you can hope for is trying to lower the command rate from 2T to 1T but don't up the voltage.

DDR4 is simply not built to handle DDR3, DDR2 or DDR voltages.

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