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DRAM Calculator for Ryzen ( news and discussions )

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DRAM Calculator for Ryzen™ 1.7.3 + MEMbench 0.8

Last update : 14 May





Techpowerup link

Guru3d link

Сomputerbase.de link

Techspot link






Video instruction:




Instruction + recommendations


Coming soon



The results of a successful overclocking can be seen here:




Great gratitude STaRDoGG , slafniy , ajc9988 and A_z_z_y for help !

Edited by 1usmus
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DRAM Calculator for Ryzen™ 1.7.3 + MEMbench 0.8 Last update : 14 May   Download:   Techpowerup link Guru3d link Сomputerbase.de link Techspot link           Video instruction:       Instru

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DRAM Calculator for Ryzen 1.7.1 Now Available For Download - Improved Memory Support With AMD Ryzen CPUs

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The DRAM Calculator for Ryzen 1.7.1 which supports AMD's Ryzen CPU platform is one of the few versions that has received a global memory retest on the newest AGESA. Over 900 hours were spent testing memory based on Samsung b-die, Micron e-die (062 and 055), and Hynix CJR(DJR) chips.


The changes affected all settings, from procODT to VDDG operating voltage. Another important change is the presence of profiles with odd tCL15, this will eliminate the problems that users have encountered trying to stabilize the system with the value tCL14. Also in this release, the user interaction with the program has been simplified, in particular, 1.7.1 has deleted the R-XMP button (one extra user action). Now the order is as follows:


1) The user selects the settings that match his system.




2) The user presses the "Calculate SAFE" or "Calculate FAST" button and that is it.




The program selects the SPD profile itself relative to the selected DRAM PCB Revision parameter. The DRAM PCB Revision parameter is essentially new and means a PCB revision that has RAM. It is very easy to visually determine the PCB revision:




Note the sockets for the memory chips. In the case of A0, they are equidistant, and in the case of A2, we have 2 groups of 4 modules each. That's all we're interested in, actually. When visually inspecting the memory, we can determine for ourselves on which revision of the PCB your memory is based. A1 is most often found in OEM products that have an ECC module. We are not interested in this type of memory, because it does not give way to overclocking.


Also in the DRAM PCB Revision point, you can see the option "Bad bin" - it exists for the situation when the settings offered by DRAM Calculator for Ryzen™ do not allow to start the system.


The "Manual" option has not changed its functions and is used to calculate timings after importing a profile from Thaiphoon.




Another important innovation with DRAM Calculator for Ryzen™ 1.7.1 is the updated functionality for the "Compare timings (ON/OFF)" button. It now not only shows the current timings but also the ones that are "heavily jammed", look satisfying, or can be reduced further. In the form of indicators, the colors from red to turquoise (4 levels of colors). Let's take an example:




Note that some timings are already red - this indicates that the memory has already reached the limit for adequate voltage (up to 1.45v). The orange color indicates that memory may be able to compress these timings. Green and turquoise - these timings are far from the safe zone.


As a result, even an inexperienced user will now know where to "spin" the timings. This tool will help users in situations where "SAFE" is stable, but "FAST" has errors.


At the moment this function is limited only by memory based on Samsung b-die chips and the entire line of AM4 processors. If the feedback is positive - this function will be distributed to other types of memory.


The last visual change is the new menu "Help and my reviews" - the section where there are buttons-links to my materials (reviews) and to other information sources or forums.




Most materials have several language versions for your convenience. I promise that the review of the keyboard will not come too :)


The list of all changes can be found below:

  • Reworking of all presets for Samsung b-die, Micron e-die, and Hynix CJR(DJR). Improved support for configurations with 4 or 8 RAM modules.
  • R-XMP and Calculate EXTREME buttons removed.
  • Added new Help and my reviews section, which provides links to my materials in addition to reference information.
  • DRAM PCB Revision - select PCB RAM for more accurate calculation of timings. In most cases, it is recommended to use "A0" for better compatibility.
  • The "Compare timings (ON/OFF)" button has received updated functionality. It can read not only the timings but also show the state of the timings in a color. Your personal assistant for creating individual presets.
  • Added the "New version?" button. - the button allows you to visit the product homepage and read the materials regarding DRAM Calculator for AMD Ryzen CPUs, check for updates, or ask any question.
  • Error fixes and some graphical adjustments.
  • Reading timings for all Ryzen family processors (including future Zen3 processors).

The latest release can be downloaded through the following links:


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Awesome that you've joined EHW! I just downloaded 1.7.1 and playing with/comparing timings from previous version. Updated interface is great.


Not sure if you can answer, but I did have a question about 4 DIMMS. Regardless of import/manual, and other DRAM PCB revisions, I see Gear Down mode is always disabled now when calculating FAST at 3600 or 3733. (3733 had it enabled in 1.7.0)


Particularly: ZEN 2, Samsung B-die, 3600 or 3733, DIMM Modules (4), X570, Calculate FAST


Comparing to your 1.7.0 calculator, 3733 Frequency had it Enabled with 99% of the same timings. Any idea if 1.7.1 having it as Disabled is an oversight?


I was under the impression it was almost impossible to run Gear Down mode Disabled above 3600 at cas 14 with 4 sticks.


Edit: When I import XMP, I do get the CAS 14 timings with a Memory Chip Quality 100%. I have the G.Skill 3600 Cas 15 chips.

Edited by bigblueshock
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Edit: Never mind. I didnt notice i was using 2 memory rank options.


Hey just tested 1.7.1 with Hynix DJR all fine and great however Ive found that the RZQ settings seem to be wrong as they just dont let the pc post without resetting bios @1usmus

Id say its RTT_WR as it wasnt off before and this simply doesnt work on my system at least

They were fine on 1.7.0. However all the other settings were fine. I have also tweaked my settings further to from 64GB 16x4 3600mhz 16-19-19-39 to 3800mhz 16-19-19-32. Please see screen attached.


New 1.7.1



Old 1.7.0


Edited by Whiskeyomega
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Hey just tested 1.7.1 with Hynix DJR all fine and great however Ive found that the RZQ settings seem to be wrong


You have your memory rank set as 1 in 1.7.1 and 2 in 1.7.0. Try fixing that and it should work.



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DRAM Calculator for Ryzen 1.7.2 Now Available


* Support OC assist for Micron E-die (A2) and CJR/DJR (A0 and A2)

* Some correction for OC assist (Samsung B-die)

* Additional presets for Hynix CJR / DJR (now A0 and A2)

* Error fix : "Parse data"

* Minor fix : voltage for Samsung B-die

* Minor fix : some timings for Micron E-die

* Minor fix : tWRRD for 4 DIMM configuration

* Other bug fixes


Techpowerup link

Guru3d link

Сomputerbase.de link

Techspot link

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Premium Bronze



The new version looks cool but has some bugs. I have Ryzen 5 1600 (12nm Pinnacle Ridge) and 4x Hynix DJR single rank. The calculations are drastically different from 1.70, which is ok. I run tighter anyways (all red lol). But clicking around in the new version sometimes it won't compare timings or it just starts hitting me with the error message. Voltages are blank in the new version. I'd like to donate some money to your project because I think this is a very worthy cause. Do you have a Patreon or something?



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Can confirm. I also have issues with massively different settings in some places and if i compare timings I get blank output. A2 seems more like my settings now but on previous versions I used to use A0. Im pretty sure I actually have B0 Revision according to Thaiphoon burner. 98fba9f7ead0.md.png 23928ecf9c9e.md.png





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Thanks for releasing a new version.


I've found two issues.

  1. Compare timings stays empty when you press on reset before calcutating the timings.
  2. RTT_WR and RTT_PARK are totally different compared to the pervious version. See screenshots below.






Edited by VuurV0S
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Hey 1usmus, can we get A0 for Micron E-Die please?


Yes, this is implemented in 1.7.3



Issues are still present in version 1.7.3:





I don't see a problem with RTT.

I also see a problem with reading the timings because of the running RGB. It happens a lot.

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I don't see a problem with RTT.

System doesn't boot with the new suggested RTT configs. They are very different compared to version 1.7.0. If I let RTT on AUTO in the bios I get similar values as provided in 1.7.0


I also see a problem with reading the timings because of the running RGB. It happens a lot.

You dont need to display the current timings to make break. Just press on Reset as first step before doing anything else in Ryzen DRAM Calculator.




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Hi I am running into an issue where it appears that my particular RAM isn't supported by the Calc yet. What should I submit to get them supported in upcoming versions?


I would imagine getting a readout of your RAM Specs via Thaiphoon Burner would help as this will give @1usmus detailed information about your RAM so he can look it over. You can post a screenshot of the specs here or you can write a comment on his twitter, you can find a link to his twitter on the "About" tab on the DRAM Calculator.

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