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Memory timings advice
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Points: 4996 		Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 19 Aug 2017 at 8:50pm
Originally posted by Asingo Asingo wrote:

Thank you for answers. When entering timing I see that they are pretty much the same?

http://www.corsair.com/en-gb/vengeance-lpx-16gb-2x8gb-ddr4-dram-3200mhz-c16-memory-kit-black-cmk16gx4m2b3200c16

SPD latency 15-15-15-36 - This number is always the same (2133,266,3000,3200mhz)

What about option on the link Tested latency?

EDIT: So for updating BIOS (x370 K4 - From 2.5 to 3.1) just to reset to default and update? I think someone wrote long time ago that clear cmos is really necessary...



SPD latency is only for the SPD speed, which is the stock, non-OC speed, only for 2133. You might be able to use those values at say 2400, but they are not for the higher OC speeds.

Tested latency on the page in your link is 16-18-18-36, at tested speed of 3200. You should see that in the SPD column for 3200 in CPU-Z. I don't see anywhere on that page 16-18-18-35. You could try using 35, but it won't make much if any difference.
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Originally posted by parsec parsec wrote:


What exactly do you mean by entering the timings never works in OC Tweaker? The values are not applied? If you check them after a Save and Exit, they are reset to something else? Or do you mean something else? Please explain what happens in more detail.

While I have some idea of the answers, my questions are, does one screen of options take precedence over another? Or are they synchronized, meaning change a setting on one screen, and is it reflected (duplicated) in the other? If they should be duplicated, say in screens A and B, does changing the setting in screen A always change it in screen B, and vice versa?


I wonder if, at least in your case, the OC Tweaker changes do not also change in DRAM Timing Config. But changes in DRAM Timing Config are also changed in OC Tweaker.

I've seen a similar thing, or at least I think I have, between OC Tweaker and the PStates screen. I think I have seen the CPU OC speed changed in PStates, not changed in OC Tweaker automatically. IF that it correct, what possibly can be the explanation for that, besides being an issue?



Parsec, I will try to get to 're-visiting' the various attempts regarding my DDR4 Timings sometime tomorrow evening. As soon as I do I'll repost some findings.

Although it seems as if you have 'heard' my issues before such as configuration settings not duplicating/changing on the other DRAM Timing configuration screen. For now iirc, when I attempted to set basic 2400,2666,etc on the OC Tweaker screen it always failed boot at those timings. I get memory errors and then it boots to the default 2133. This behavior doesn't happen on the Advanced screen/DRAM Timings.

It behaves as if the original Bios template was taken from a 'dual bios' implementation, and then used in the now 'single bios' implementation found in the AsRock AM4 platform(...just an uneducated guess). Likewise on the OC Tweaker screen all configuration options are decimal, whereas on the Advanced screen some configurations are Hexadecimal. (see Pstates as well which contain both). Nevertheless I am able to run my DDR4 at 3066/1500Mt's(64GB Hynix) and more stable MOBO voltages with the latest bios and a 3.975 CPU OC. So things are ok/no major complaints!
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Originally posted by parsec parsec wrote:

Originally posted by Asingo Asingo wrote:

Thank you for answers. When entering timing I see that they are pretty much the same?

http://www.corsair.com/en-gb/vengeance-lpx-16gb-2x8gb-ddr4-dram-3200mhz-c16-memory-kit-black-cmk16gx4m2b3200c16

SPD latency 15-15-15-36 - This number is always the same (2133,266,3000,3200mhz)

What about option on the link Tested latency?

EDIT: So for updating BIOS (x370 K4 - From 2.5 to 3.1) just to reset to default and update? I think someone wrote long time ago that clear cmos is really necessary...



SPD latency is only for the SPD speed, which is the stock, non-OC speed, only for 2133. You might be able to use those values at say 2400, but they are not for the higher OC speeds.

Tested latency on the page in your link is 16-18-18-36, at tested speed of 3200. You should see that in the SPD column for 3200 in CPU-Z. I don't see anywhere on that page 16-18-18-35. You could try using 35, but it won't make much if any difference.

You could see that on my last post on first page. I am new at this memory stuff so I don`t understand yet. 

Where can I find timings which I will manually enter in bios for specific frequencies(2133, 2400, 2666, 2933, 3200mhz)? Ermm
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Common guys, some short tutorial for memory timings Geek
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Originally posted by Asingo Asingo wrote:


You could see that on my last post on first page. I am new at this memory stuff so I don`t understand yet. 

Where can I find timings which I will manually enter in bios for specific frequencies(2133, 2400, 2666, 2933, 3200mhz)? Ermm


If you open the SPD tab of CPU-Z, you should find a Timings Table, with a number of Frequencies at the top, and the basic timing values below them. You must select a Slot (memory slot) at the top that contains a memory module. For example:



Frequency is one half of the actual speed of the memory. DDR means Dual Data Rate memory, the effective memory speed is twice the frequency.

In your board's UEFI/BIOS, in the DRAM Configuration screen, do you see an entry for DRAM Tweaker? If so, that is a feature that lets you easily choose among the timings programmed into your memory.

Or download Thaiphoon Burner, below, the free version, which will give you more information about your memory than you will ever need, including timing tables:

http://www.softnology.biz/files.html
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To not open a new thread I will ask here: My memory is current on 2666mhz, xmp profile. Is it normal that when I start PC  I get two restart before booting procedure start up?
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no it should when working correctly just start like any other pc
[url=https://valid.x86.fr/jpg250][/url]

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Originally posted by datonyb datonyb wrote:

no it should when working correctly just start like any other pc


Not necessarily.

In my swapping 8-9 Kits around I've see Memory Training take three or more cold boots to settle down and do as one would expect.
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i was reading it as in he is getting this ALL  the time not just first boot
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Originally posted by Asingo Asingo wrote:

To not open a new thread I will ask here: My memory is current on 2666mhz, xmp profile. Is it normal that when I start PC  I get two restart before booting procedure start up?


That sounds like the AM4 Advanced Boot Training option is enabled (set to Auto = Enabled, the default). Unless your Fail Count option for the number of restarts is set to two, it is normally set to three by default.

That option (in the OC Tweaker screen) usually does not help with memory stability, so you can just set it to Disabled.

But yes, it is normal to have the multiple restarts when that option is enabled.
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