Need advice overclocking ram

[Fabio]

Hi all, i need some help with my ram.
I recently buld up my new rig, 8700k plus 2 x 16 GB trident Z 3200 cas15 on a maximus x hero (i know, they are tooooo expensive but i bought one year ago at a much better price and keep them locked till now )
The ram are given for a 1.35 V voltage, i experimented for a while and actualy i find 3 stable setup
-3200 14-15-15-34 1T 1.34v
3400 15 16 16 35 2T 1.34v
3466 15 16 16 35 2T (stil testing) 1.365 v
which is the better one?
I almost did't touch the voltage (1.342 from xmp and a little higher 1.365 for 3466). The dimm's sensor show a temperature of 43-44°C under stress test, i think this is correct because i dont feel them hot at the touch, but barely warm . Do you think such overclock can be considered totaly safe for a 24/7 use?
Ps. Sorry for my bad english

 

[erocker]

Which is better? Well, you have the system, you can check whatever programs/apps you use against the various speeds and timings. We can only guess what would be better with your system and programs you use.

 

[Konceptz]

Hi all, i need some help with my ram.
I recently buld up my new rig, 8700k plus 2 x 16 GB trident Z 3200 cas15 on a maximus x hero (i know, they are tooooo expensive but i bought one year ago at a much better price and keep them locked till now )
The ram are given for a 1.35 V voltage, i experimented for a while and actualy i find 3 stable setup
-3200 14-15-15-34 1T 1.34v
3400 15 16 16 35 2T 1.34v
3466 15 16 16 35 2T (stil testing) 1.365 v
which is the better one?
I almost did't touch the voltage (1.342 from xmp and a little higher 1.365 for 3466). The dimm's sensor show a temperature of 43-44°C under stress test, i think this is correct because i dont feel them hot at the touch, but barely warm . Do you think such overclock can be considered totaly safe for a 24/7 use?
Ps. Sorry for my bad english

I'd personally stick with 3400 15 16 16 35 2T 1.34v and work on getting the timings down. The extra 66mhz isn't as beneficial as lower timings on the ram.

 

[Fabio]

I'd personally stick with 3400 15 16 16 35 2T 1.34v and work on getting the timings down. The extra 66mhz isn't as beneficial as lower timings on the ram.

Just tried, at those voltages and frequencies, these are the lowest possible timings. Command rate still so much important? I remenber in ddr2 it was, but reading some more recent review it seems not.

Which is better? Well, you have the system, you can check whatever programs/apps you use against the various speeds and timings. We can only guess what would be better with your system and programs you use.

mainly gaming

 

[John Naylor]

One rule of thumb ya can use is CAS x 1000 / Speed

14 x 1000 / 3200 = 4.375 ns
15 x 1000 / 3400 = 4.412
15 x 1000 / 3466 = 4.328

It doesn't guarantee anything but more often than not it seems to work ... you won't know until you test it with the things that you do and, outside of benchmarks, I doubt there will be a significant impact. Some things respond better to speed, some better timings. The typical Intel sanctioned voltage for 3200 and lower is 1.35 so if above that, you should expect to have to apply higher voltages. Intel doesn't want you to exceed 1.5v. As with all the "fake news" that Inte;l warranty was void if ya went above 1.5 w/ DDR3, this is simply bogus information that 1.35 is the max for DDR4. The 1.5 (DDR4) and 1,35 (DDR4) are simple what is contained in th e JEDEC specification ... Intel's XMP, by definition, is overclocking exceeds the JEDEC specification.

https://www.intel.com/content/www/us/en/gaming/extreme-memory-profile-xmp.html

"Intel® Extreme Memory Profile (Intel® XMP) lets you overclock RAM and compatible DDR3/DDR4 memory to enhance the gaming features built into PCs with Intel Inside®. Get that extra edge you need to dominate."

http://www.legitreviews.com/what-is-the-safe-voltage-range-for-ddr4-memory-overclocking_150115

"In recent weeks we have received kits that are running Intel XMP 2.0 memory profiles at 1.35V and 1.50V, which are both above the the ‘standard’ according to the JEDEC board .... Legit Reviews contacted Intel about the safe voltage range on DDR4 memory and we received this response.

“1.5v is the absolute max we allow for XMP certifications. However, good DDR4 memory will run at 1.35v up to 3200. Technically, no “safe” (guaranteed) OC over-voltage but 1.35v or lower is best.” – Intel

So, it sounds like Intel suggests a memory kit that uses 1.35V or less and that 1.5V is the absolute max for Intel XMP 2.0 certifications. This is useful information for the community and we pretty sure that we weren’t the only ones that were curious how much power you could throw at the memory kit before the memory controller on the processor would being to get angry.

1.2V or lower = Best for DDR4
1.35V = okay voltage for overclocking kits
1.5V =absolute max voltage allowed for Intel XMP 2.0 profiles and max suggested voltage"

 

[Fabio]

One rule of thumb ya can use is CAS x 1000 / Speed

14 x 1000 / 3200 = 4.375 ns
15 x 1000 / 3400 = 4.412
15 x 1000 / 3466 = 4.328

well, in my ignorance i thoungt something like that. My doubt is about command rate, because to rise frequencies mantaining low timings at the given voltage i have to set 2T. I realy dont know how much this parameter can impact performance
So i as you said if i can stay around 1.35 +/- 1% ill be safe in daily use...

 

[eidairaman1]

Refer to the ram makers site for correct timings and voltage of your current ram kit and then the next speed up from that, that is how I learned my ripjaws kit would run trident speed, timings, and voltage without ill effect