2666 MHz DDR4...the sweet spot?

I've been playing around with my memory overclock on my motherboard...tried higher frequencies, lower frequencies, changing latency, etc.

The sweet spot for my rig appears to be:

- Frequency: 2666 MHz
- Latency: 15-15-15 (forgot last number)
- Command Rate: 1T
- Voltage: 1.2 V

I say this is the sweet spot as when I go up to 3000 MHz (as the 5% jump to 2800 MHz isn't "worth" it) I have to increase the latency to 17-17-17 and increase the voltage to 1.35 V.

So, I am burning more power, increase memory clock by 12.5%, but also increase memory latency by 13.3%...making the frequency increase a wash.

Am I looking at this the wrong way?

Have others seen similar results?

Thanks!

Considering price, I'm thinking 2800 cl14 or 3000 cl15. My logic is why would I buy ddr3 speeds (2666) with horrible katency.

Power use is negligible.. they only use a couple watts.

EarthDog said:

Considering price, I'm thinking 2800 cl14 or 3000 cl15. My logic is why would I buy ddr3 speeds (2666) with horrible katency.

Power use is negligible.. they only use a couple watts.

Click to expand...

All this +1

Buying kits that are 2800 CL14 or 3000 CL15 are very close in price to 2666 CL15 or lower.

@ JrClocker , I don't think that Geil Luce can't run at tighter timings than CL17-17-17. Nearly all memory IC are working at 3000 15-16-16 or tighter timings at 1.35V. If you wish to have better results then try to play some with timings or additional memory settings. If not then you will be fine at 2666 15-15-15 and low voltage.
MSI boards have various profiles which you can try.

Performance wise from a review i read DDR4 stops showing decent improvement at 3000mhz cl15 (on Skylake at least) suppose you could call that your sweet spot, ill link it if i find it again.

http://www.anandtech.com/show/8959/...to-3200-with-gskill-corsair-adata-and-crucial

http://www.legitreviews.com/ddr4-me...nding-the-best-ddr4-memory-kit-speed_170340/6

Most memory reviewers have no idea what are they doing , even on these bigger portals

If you look performance wise then you can say that on X99 anything above 2666 ( or even lower ) is waste of money. About the same on Z170 but if you see that 2133, 2400 or 2666 kits cost almost the same as 3000+ then it's better to stick to higher frequency memory for faster access time what in some applications gives visible performance improvement ( usually not in games ).