Overclock.net › Forums › Intel › Intel CPUs › *Official* Intel DDR4 24/7 Memory Stability Thread
New Posts  All Forums:Forum Nav:

*Official* Intel DDR4 24/7 Memory Stability Thread - Page 28

post #271 of 4633
Quote:
Originally Posted by Silent Scone View Post

I wouldn't worry, I doubt there is anything ominous happening. Return the memory to stock and see if the error is repeatable.

Also list what else is open

To stock, you mean run everything on stock and not even load XMP? I can do that, but what's the sense in buying that memory if it can't work on its rated specs?

I only have PrecisionX running in the tray. Except that - only standard windows stuff and nvidia drivers.
post #272 of 4633
Thread Starter 
Quote:
Originally Posted by Raendor View Post

To stock, you mean run everything on stock and not even load XMP? I can do that, but what's the sense in buying that memory if it can't work on its rated specs?

I only have PrecisionX running in the tray. Except that - only standard windows stuff and nvidia drivers.

To see if it occurs at stock. Yes, without XMP (memory at 2133). Also close Precision when running HCI
post #273 of 4633
Quote:
Originally Posted by Silent Scone View Post

To see if it occurs at stock. Yes, without XMP (memory at 2133). Also close Precision when running HCI

Ok, I reverted to absolutely everything on stock but still crashed. However I didn't close the precision at that time. I will try now without precision and report back.

What bothers me is that it crashes straight into BSOD rather than just showing some error in memtest.
Edited by Raendor - 1/15/16 at 1:27pm
post #274 of 4633
Thread Starter 
Quote:
Originally Posted by Raendor View Post

Ok, I reverted to absolutely everything on stock but still crashed. However I didn't close the precision at that time. I will try now without precision and report back.

What bothers me is that it crashes straight into BSOD rather than just showing some error in memtest.


Memtest sometimes has an adverse affect on the polling period in these overclocking/OSD applications
post #275 of 4633
Quote:
Originally Posted by Silent Scone View Post

Memtest sometimes has an adverse affect on the polling period in these overclocking/OSD applications

It looks to me this might be the case really. Cause I passed the mark when it usually crashed before I killed Precision. Ok, I'll continue my trials with stock and then xmp if everything goes smoothly. I hope it's really just the issue with Precision. Anyway, thamk ou so much!
post #276 of 4633
Thread Starter 
Quote:
Originally Posted by Raendor View Post

It looks to me this might be the case really. Cause I passed the mark when it usually crashed before I killed Precision. Ok, I'll continue my trials with stock and then xmp if everything goes smoothly. I hope it's really just the issue with Precision. Anyway, thamk ou so much!

No problem, glad I could help
post #277 of 4633
I'm not even sure how to ask this question... yet. I need an education basically. This thread here and this ram tuning thread at HWbot got me interest in how memory works, and frustrated that I don't have the knowledge (or tools?) to "conquer" optimization of a ram OC.

I want to be able to manually optimize DDR4 memory in BIOS of "consumer" PC's, but my google-fu is lacking as I'm not sure what questions to even ask. Where's a good place to start educating myself to understand and completely demystify:

- DRAM training
- The definition and application of every configurable memory timing option in any given Intel 100 series motherboard

I'm just a hobbyist builder with no technology education - where do I even start? For now I'm watching youtube videos on digital logic basics, hopefully so I can better understand more advanced info later (such as this?). Am I barking up the wrong tree... do I need to get a computer science/engineering degree... idk what subjects to investigate at first. All I have now is some limited PC building experience and a basic electronics understanding. ANY pointers to good books/articles/key terms would be super helpful to at least my lacking google-fu.

I've breezed through all the OC guides, but I really want to understand ALL the memory timings in depth.
Edited by Unclefred - 1/16/16 at 8:32pm
post #278 of 4633
Define understand, as in knowing how memory works or how timings affect different applications, or what is going to give the best performance for your pc. I cant tell you that. What i can do is tell you to keep reading memory guides there are alot out there that give good healthy amount of info.

Now if you just want to play with timings in the bios i can help you get started in what helps performance and what does not seem to make much difference.

Priority go's something like this.

2400Mhz DDR3 ram Typical performance timings.

Priority 1 - CAS: 10
Priority 4 - tRCD: 12
Priority 3 - tRP: 12
Priority 2 - tRAS: 31
Priority 2 - tRFC: 240
Priority 3 - CR: T2

Now of course you have to look at your total latency also. So memory frequency will change your ACTUAL time to complete. So lets say you have some 1000Mhz ram @ 5-5-5-25 If you run that same timings at 2000Mhz you would be effectively running 1000Mhz memory at 2.5-2.5-2.5 12.5 timings.

Now what timing do you change first? That i can not say because every memory may act different depending on brand and default timings. And expect data loss is very viable when playing with timings.

Not all timings act the same. your three base timings 10-12-12 do NOT necessarily change your over all delay. But your 31 (tRAS) will just as your 240 (tRFC) will so you have to balance them out. Now that is not exactly 100% true but it will give you a baseline on where to start. T2 (CR) is said to be your total round trip edit: CMD: Command Rate. Is the time it takes between the memory chip having been activated and when the first command may be sent to the memory. so this should be a huge massive jump in performance, its not anymore.

Lower numbers = lower latency
Higher frequency = lower latency
So as your frequency increases timings need to go up to maintain stability.
More voltage on your Ram will help timings stabilize provided you have active cooling on your ram modules
For higher frequency you may have to add to your cpu's service agent voltage, But beware adding voltage to the SA can affect stability and on some chips your SA must be balanced with the IMC or the IO voltage. IE if you raise one the other must follow and should stay at the same gap as they go up. Also dont go very far with these voltages 1.25 is about as high as i would recommend.


OK well i probably missed a few things along the way but i think that will get you started, if i find time i will see if i cant find some more articles about memory for ya....

Let me know if you have questions.
Edited by Formula383 - 1/16/16 at 11:19pm
Classified
(16 items)
 
  
CPUMotherboardGraphicsRAM
4960x Asrock x79 Extreme11 3 TitanX Gskill F3-19200C10-8GBZHD x4 32GB 
Hard DriveHard DriveHard DriveHard Drive
M4 512GB SSD Seagate 15k 600GB x2 with LSI MR9260-8i WD 4TB sas x6 WD 4TB sata  
Optical DriveCoolingOSMonitor
none Custom win7 64 ultimate 30" 2560x1600 x 3 
PowerCaseMouseAudio
evga 1600w supernova titanium Coolermaster CosMos2 Naga2014 xenyx x1622 
  hide details  
Reply
Classified
(16 items)
 
  
CPUMotherboardGraphicsRAM
4960x Asrock x79 Extreme11 3 TitanX Gskill F3-19200C10-8GBZHD x4 32GB 
Hard DriveHard DriveHard DriveHard Drive
M4 512GB SSD Seagate 15k 600GB x2 with LSI MR9260-8i WD 4TB sas x6 WD 4TB sata  
Optical DriveCoolingOSMonitor
none Custom win7 64 ultimate 30" 2560x1600 x 3 
PowerCaseMouseAudio
evga 1600w supernova titanium Coolermaster CosMos2 Naga2014 xenyx x1622 
  hide details  
Reply
post #279 of 4633
thanks for the reply @Formula383. What you said is about what I understand though not as well as I couldn't even put it into words like you did yet. The prioritization I've never seen laid out like that, interesting. I also gather tRAS and tRFC need to be "balanced out," just looking for a solid understanding so I'm not just taking stabs each boot attempt.

I added "DDR4 Architecture" to my google-fu and there's more info than I can even digest now. I also read that tREFI works differently for DDr4 compared to DDR3. I almost want to just wait and let some of our established forum gurus put it into words for peons like me - DDR4 is new and "intermediate" articles are few.

Frankly I'm most hungry for a mental grip on how memory training works and what it does, what secondary/tertiary timings it affects, what the mobo is doing during the process, etc. Not looking for answers here really, just a nudge in the right direction with the right search terms or a link so I can educate myself... I know I'm needy

OH I ALMOST FORGOT I need to be able to view secondary/tertiary timings with a z170 gigabyte mobo in Windows, damn BIOS only displays XMP/SPD defaults and I want to see what numbers churn out from a memory re-train. Found "RAMMon" but it only displays serial/SPD info, detailed as it is. Making me wish I had an ASUS board with their support software.
Edited by Unclefred - 1/16/16 at 9:51pm
post #280 of 4633
Quote:
Originally Posted by Unclefred View Post

Frankly I'm most hungry for a mental grip on how memory training works and what it does, what secondary/tertiary timings it affects, what the mobo is doing during the process, etc. Not looking for answers here really, just a nudge in the right direction with the right search terms or a link so I can educate myself... I know I'm needy

Hello

Study the JEDEC docs for DDR4. Once you can make your way through those you will have a good grasp on the various timings and how they relate to each other.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › *Official* Intel DDR4 24/7 Memory Stability Thread