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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 61

post #601 of 4888
Hello

For a basic understanding of memory training I suggest searching some of the X99 threads, reading applicable JEDEC papers as well as application notes from the various companies that produce equipment to monitor or measure eye diagrams for timing signals. It is getting more and more difficult to hit the replay button every time subject is brought up when it is new to only the person bringing it up.
post #602 of 4888
Quote:
Originally Posted by Praz View Post

Hello

For a basic understanding of memory training I suggest searching some of the X99 threads, reading applicable JEDEC papers as well as application notes from the various companies that produce equipment to monitor or measure eye diagrams for timing signals. It is getting more and more difficult to hit the replay button every time subject is brought up when it is new to only the person bringing it up.

Thanks I'll give it a look. I think I have the info I wanted anyway but it doesn't hurt to read up.

I was basically thinking of monitoring what the bios decides are safe settings over time and using that as a starting point for when I want to start tweaking. Knowing when the bios will reset the settings to default will help avoid anomalies in the data.

I'm happy with the way it's performing at the moment so I don't think I'll be tweaking quite yet, but I thought it was a good time to start collecting data.
post #603 of 4888
Thread Starter 
You're getting caught up on the differences between POST to POST and are confused on how data is read and rewritten from NVRAM. You can't dictate what is valid for a pass or fail beyond the appropriate latency, settings and voltages. I'd also recommend reading Raja's guides on ROG which touch on the subject.

Seriously consider focusing on stability and what the training codes represent when pushing memory, so the unshackled questions surrounding MRC are kept to a minimum. For everyone's sake including mine (attempting to laymanise in car crash fashion)
post #604 of 4888
Quote:
Originally Posted by Silent Scone View Post

You're getting caught up on the differences between POST to POST and are confused on how data is read and rewritten from NVRAM. You can't dictate what is valid for a pass or fail beyond the appropriate latency, settings and voltages. I'd also recommend reading Raja's guides on ROG which touch on the subject.

Seriously consider focusing on stability and what the training codes represent when pushing memory, so the unshackled questions surrounding MRC are kept to a minimum. For everyone's sake including mine (attempting to laymanise in car crash fashion)

I'll bear that in mind and have a look at the ROG guides. Thanks.

I would have thought that if I saw how the mobo handled it, I'd notice patterns for instance if it went beyond stable and had to loosen a latency setting back again. On the other hand I might not learn anything from it. Either way my curiosity will be satisfied.

I wouldn't say I'd got as far as confused, just open to possibilities. It's a moot point now as it's irrelevant for what I want to do. Knowing what you put in your first answer should be enough. Once I've learned a bit more I can see for myself how switching between SPD and XMP affects it.

Did you get my PM?
post #605 of 4888
Hi everyone, new to the thread, and OC in general. Wanted some hints to improve my memory clocks, 1T or 2T. or any of the primary timings would be good enough for me smile.gif

This is what i got at the moment.



Gskill Trident Z 3000MHz CL15, Tcas 17T, Trcd 18T, Trp 18T, Tras 36T, Trfc 390T, Command rate 2T at 1,350V

Anyone has experience with tighter timings on these?

Edit: that is a pic of a 750%+ pass of HCI. CPU @4.6, cache 3.9 @ 1,410V (Bios).
Edited by Zaen - 1/31/16 at 6:46pm
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post #606 of 4888
Wow I didn't realize tightening secondaries and some tertiary's would make such s difference! I have only currently done some, From the guide I posted earlier.

http://forum.hwbot.org/showthread.php?t=148427

In progress of messing with the others. Currrently benching better at 3600 17/18/18/38 1T than I previously was with 3866 17/17/17/37 1T.

32.5 gb maxxmem and I also beat my previous SuperPi Score of 6m 38 Which was when my PC was clocked at 4.8ghz, Im currently at 4.7!!

Im enjoying this! Finding out which it likes me to lower etc...

What Ive currently messed with.

tREFI - set to 65000

tFAW set to 16

RAS to RAS DELAY (L and S) 7 5

Write to Read Delay (L and S) 6 6

CAS Write Latency Doesnt like me to lower from 10.

I have also done a couple of tertiary's as per guide!

I cannot for the life of me how to do the RTL trainging though. Are there any other similar guides out there I could also have a browse at?
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post #607 of 4888
Quote:
Originally Posted by Zaen View Post

Hi everyone, new to the thread, and OC in general. Wanted some hints to improve my memory clocks, 1T or 2T. or any of the primary timings would be good enough for me smile.gif

This is what i got at the moment.



Gskill Trident Z 3000MHz CL15, Tcas 17T, Trcd 18T, Trp 18T, Tras 36T, Trfc 390T, Command rate 2T at 1,350V

Anyone has experience with tighter timings on these?

Edit: that is a pic of a 750%+ pass of HCI. CPU @4.6, cache 3.9 @ 1,410V (Bios).

Have a look at my above post, theres a link to a nice guide. Of course that guide is pumping alot of voltage through the kits but its a good read and gives a good idea on some of the important timings.

Basically my advice is to have a good windows image to hand and then try a whole bunch different timings and speeds!

If you up the speed then you will have to loosen timings and/or up voltage.

Also you seem to be running memtest with 7 iterations of 2gb? You should be splitting amongst 8 threads. So 8 instances and less than 2gb each. 1650 approx depending on how much windows is running.
Edited by llantant - 1/31/16 at 11:07pm
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post #608 of 4888
Thread Starter 
Quote:
Originally Posted by Zaen View Post

Hi everyone, new to the thread, and OC in general. Wanted some hints to improve my memory clocks, 1T or 2T. or any of the primary timings would be good enough for me smile.gif

This is what i got at the moment.



Gskill Trident Z 3000MHz CL15, Tcas 17T, Trcd 18T, Trp 18T, Tras 36T, Trfc 390T, Command rate 2T at 1,350V

Anyone has experience with tighter timings on these?

Edit: that is a pic of a 750%+ pass of HCI. CPU @4.6, cache 3.9 @ 1,410V (Bios).


First thing is to retest at 1T. Also as above please read the correct configuration of HCI from within the OP smile.gif
Edited by Silent Scone - 2/1/16 at 12:08am
post #609 of 4888



This is my best mem OC to date. I am really enjoying playing with the secondary and tertiary timings!! What do you guys think?

3733mhz 17/18/18/38 1T @ 1.4v with 1.2 vccio and 1.25 SA plus I have tweked quite a few other timings. Great maxxmem score and super pi and 1000% memtest and 2 hour stressapp!! thumb.gif
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post #610 of 4888
Quote:
Originally Posted by llantant View Post

Warning: Spoiler! (Click to show)


This is my best mem OC to date. I am really enjoying playing with the secondary and tertiary timings!! What do you guys think?

3733mhz 17/18/18/38 1T @ 1.4v with 1.2 vccio and 1.25 SA plus I have tweked quite a few other timings. Great maxxmem score and super pi and 1000% memtest and 2 hour stressapp!! thumb.gif
Nice! I would think there is a timing error corrected by the MB with tRTP at 10 and FAW at 16. Lower tRTP to 4 (usually FAW is noi less than 4x tRTP). Also, with RTP lower the performance increases significantly. thumb.gif

what clock period? or is this on auto?
Edited by Jpmboy - 2/1/16 at 7:01am
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