DRAM calculator for Zen 3

[dgianstefani]

Pretty much finished tweaking for now. Weird thing is it passed tests at 4000 same timings but very occasionally crashed to restart in certain games.

Anyhow, I'm happy with this latency and maybe future bioses will allow 4000/2000.

 

[brandon7171]

Pretty much finished tweaking for now. Weird thing is it passed tests at 4000 same timings but very occasionally crashed to restart in certain games.

Anyhow, I'm happy with this latency and maybe future bioses will allow 4000/2000.

View attachment 179613

That is very nice. I would be happy to. I am going to have to break down and get B-Die ram. That b-die seems to be way better. I have this thermaltake I will never purchase thermaltake every in my life again. I found some Corsair B-die. But I think I going to go with the g.skills b-die kit.

 

[tancabean]

I’m putting together a new build with a 5950x on an MSI B550 Mortar and unable to boot XMP profiles. Both XMP profiles are at 3600Mhz. Seems I’m suffering from the same MSI XMP issue that folks have been reporting with Zen 3 chips.

RAM is 2x16GB Gskill V Series 3600 CAS16.

Is DRAM calculator the best way to determine the proper timings I should set in the BIOS to get things running? I’m willing to settle for 3200Mhz if it helps.

 

[Anonymous1243]

Seems I’m suffering from the same MSI XMP issue that folks have been reporting with Zen 3 chips.

I wish they would hurry up and release a new BIOS with 1.1.8.0 for my B550 Tomahawk, kinda regretting getting MSI with how AFK their BIOS team has been...
I want to be able to post at above 1867 FCLK, even just 1900 FCLK would be a nicer number even if it doesn't make much of a difference. I was expecting 1900 FCLK minimum, 2000 FCLK or higher if I'm lucky.
MSI making my RAM go to waste a bit, at least the timings are tight

 

[equlizer]

Hello I'm totally new to the B-die scene. I recently picked up some Gskill Flare X F4-3200C14D-32GFX memory. Im running a 5800x on a B550 motherboard with latest bios. Does anyone have the best general timings for these chips? I'm currently running them at 3400mhz with the same timings as 3200mhz but had to up the voltage to 1.4v. I'm starting down the rabbit hole here. Any help is appreciated.

 

[dgianstefani]

B die can run up to 1.6v stable daily if it has airflow and is kept under 45c. Go for 3800

 

[Zach_01]

B die can run up to 1.6v stable daily if it has airflow and is kept under 45c. Go for 3800

B-dies can take even 2.0V with the proper amount of airflow to keep it under 45C. Currently I run 2 sticks, not so high quality, at 3800 with 1.46~1.47V 16-18-18-18-36/1T

 

[brandon7171]

B-dies can take even 2.0V with the proper amount of airflow to keep it under 45C. Currently I run 2 sticks, not so high quality, at 3800 with 1.46~1.47V 16-18-18-18-36/1T

Hi would u happen to know the best timings for this thermaltake R009D408GX2-4400C19A Its Hynix Die.. My current timings are 16 20 20 40 63. I am also running a 4x8 kit and not 2x8 its running at 36MHZ, Motherboard is Crosshair Formula VIII X570, CPU is Ryzen 7 3700X 8 Core. I am very new to theses timings, A big thanks to @sneekypeet for helping me with the current timings i have..

 

[equlizer]

Well i tried upping my speeds from 3400mhz to 3433mhz with exact same timings and my benchmarks and cpu-z score goes down. Why would it do that if its passing all tests?

 

[Alyjen]

Well i tried upping my speeds from 3400mhz to 3433mhz with exact same timings and my benchmarks and cpu-z score goes down. Why would it do that if its passing all tests?

Check your IF (FCLK) settings. If it's on auto here's a chance that when you change memory clock your IF stays lower and it needs to be set 1:1 (and keep in mind that memory is DDR) so
Memory 3200 IF 1600
Memory 3400 IF 1700
Memory 3600 IF 1800

and so on. It's visible in Zen-Timings, Ryzen Master or in BIOS

I wish they would hurry up and release a new BIOS with 1.1.8.0 for my B550 Tomahawk, kinda regretting getting MSI with how AFK their BIOS team has been...
I want to be able to post at above 1867 FCLK, even just 1900 FCLK would be a nicer number even if it doesn't make much of a difference. I was expecting 1900 FCLK minimum, 2000 FCLK or higher if I'm lucky.
MSI making my RAM go to waste a bit, at least the timings are tight

Don't get your hopes too high On my Asus I could boot at 2000 FCLK on day 1, but it's not good as it's super unstable. With most recent BIOS based on AGESA 1.1.8.0. 1900 seems stable but still once every few days I get 1-2 whea warnings recorded. 1866/3733 not a single warning. 2000 still seems out of reach.

 

[Anonymous1243]

I have a new problem since getting a new GPU that heats up my case and room significantly more, this is no longer stable and will throw out a couple errors pretty fast if I run TM5 right after gaming long enough to heat things up:

Below is what I'm running now:

I was running vDIMM 1.53v in BIOS (reported as 1.516-1.520v, any lower isn't stable) and just threw it down to 1.45v in BIOS, and it doesn't seem to overheat anymore. 52.7ns to 54.2ns though.
I wish I could at least get FCLK up to 1900 for 3800 for C16 assuming I wouldn't have to raise voltage much again.
So what should try? Or do I just leave it like this since 3733C14 is too hot

 

[Alyjen]

3800CL16 works even with 1.4V , but I only have 2x8 set so it's probably easier, you should be able to do 3733 ĆL15 with ~1,43V but for that GDM OFF and that maybe be hard

You have to think if this extra few ns, which you'll never spot in games is worth all these issues, potential OS corruption etc. Sure 1900 looks better, but it's still not 2000 so I think I'll pass and wait for even better BIOSes

 

[Anonymous1243]

3800CL16 works even with 1.4V , but I only have 2x8 set so it's probably easier, you should be able to do 3733 ĆL15 with ~1,43V but for that GDM OFF and that maybe be hard

You have to think if this extra few ns, which you'll never spot in games is worth all these issues, potential OS corruption etc. Sure 1900 looks better, but it's still not 2000 so I think I'll pass and wait for even better BIOSes

Yea the 1867 FCLK BIOS limit is really screwing me here, cause C16 wouldn't be so bad if I could raise the frequency more. I don't want to lower from 3733 to like 3600 or something so I can lower voltage and keep C14, and you're right trying to get C15 GDM off seems like it's going to be a headache. Ugh
It just feels stupid to have spent so much on this RAM to end up 3733C16, especially if I could hit 3867C16 or 3933C16 with stable temps 1.45v maybe idk about 4000
MSI get your shit together please

 

[tancabean]

I was able to get my 3600 GSkill kit running at 3200 16-18-18-36 1.35v in a B550m Mortar. Got crashes at tighter timings. Not a great result but good enough until MSI fixes their shit.

 

[Anonymous1243]

I was able to get my 3600 GSkill kit running at 3200 16-18-18-36 1.35v in a B550m Mortar. Got crashes at tighter timings. Not a great result but good enough until MSI fixes their shit.

Their BIOS is really doing that? I haven't heard much about that, just this FCLK limit plague that some brands seem to be fixing faster. Haven't had a BIOS release since Nov 16th for my board still 1.1.0.0 C

 

[Alyjen]

@Dreamic Ok so this is not mine but a user from Polish forum, he's quite good with memory (and that's understatement, he was able to help me pretty fast)
Ignore 3800 you can drop to 3733, but for him this worked to get GDM OFF at ~1.43V and that's also MSI board
CAD_BUS part is rather important. But again it's 2x8 and you are dealing with 4x8 so I'd say this 3733C16 is still better than most of users are getting

 

[brandon7171]

@Dreamic Ok so this is not mine but a user from Polish forum, he's quite good with memory (and that's understatement, he was able to help me pretty fast)
Ignore 3800 you can drop to 3733, but for him this worked to get GDM OFF at ~1.43V and that's also MSI board
CAD_BUS part is rather important. But again it's 2x8 and you are dealing with 4x8 so I'd say this 3733C16 is still better than most of users are getting

View attachment 180111

Im looking for some help if possible with my 4x8 kit of thermaltake ram. Could u direct me to a forum maybe that could help me with my kit?

 

[equlizer]

Sorry, forgot to post a screenshot of it running at 3400mhz DOCP timings. I would like to get higher speeds and or tighter timings. Any help is appreciated

 

[Alyjen]

Im looking for some help if possible with my 4x8 kit of thermaltake ram. Could u direct me to a forum maybe that could help me with my kit?

I've send you PM, I'm not that good and just copy what others are using. Still it took me a week or so of reading and testing to get a basic understanding why some settings works for me while others doesn't etc.
Good start is to know what memory you've got and then look for others who have the same and already spend more time trying to set them right, and learn from them. I have Samsung B-Dies, very high bin (XMP profile of 4400CL19, they can run basically anything between 3200CL12 to 4000CL16) so it's rather easy, still I made ton of mistakes some of them resulting in OS wipe

DRAM calculator for Zen 3 when used correctly helps a lot, but it's not a magic bullet

 

[equlizer]

I was able to get this with a little help from another site. Can i get better timings or higher clocks? thx

 

[dgianstefani]

Spent another 2 hrs tweaking lmao, shaved off another 2ns latency.

Pretty much finished tweaking for now. Weird thing is it passed tests at 4000 same timings but very occasionally crashed to restart in certain games.

Anyhow, I'm happy with this latency and maybe future bioses will allow 4000/2000.

View attachment 179613

 

[equlizer]

Are you running any games or benchmarks after tweaking? Any or much improvements? I've been tweaking too and can get pretty low on timings but there is a point of diminishing returns. Also which timings give you the best results in games/benchmarks? What made you decide on 40ohm for the procODT?

 

[JGalland]

Hi guys !
I'm running a Asrock X570 Taichi - Ryzen 9 5900X - 2x16 GB Trident Z RGB 3600Mhz C16

It's my first time trying to OC my memory with the DRAM calculator and I've already noticed weird behaviour. Especially in the voltage department :

Weird thing is : with standard XMP on for that kit, I have (based on Ryzen Master) :
SOC Voltage => 1.2 Volts
VDDG CCD Voltage => 1.15 Volts
VDDP => 1.1 Volts
VDDG IOD => 1.1 Volts

Values well beyond the max "safe" preset for the DRAM Calc.

I did try those DRAM calc settings anyway : and the PC just won't boot. I suspect the voltages recommanded by the calc are too low. Maybe I'm mistaken ?
Appreciate any help !

 

[brandon7171]

Hi guys !
I'm running a Asrock X570 Taichi - Ryzen 9 5900X - 2x16 GB Trident Z RGB 3600Mhz C16

It's my first time trying to OC my memory with the DRAM calculator and I've already noticed weird behaviour. Especially in the voltage department :

View attachment 180865

Weird thing is : with standard XMP on for that kit, I have (based on Ryzen Master) :
SOC Voltage => 1.2 Volts
VDDG CCD Voltage => 1.15 Volts
VDDP => 1.1 Volts
VDDG IOD => 1.1 Volts

Values well beyond the max "safe" preset for the DRAM Calc.

I did try those DRAM calc settings anyway : and the PC just won't boot. I suspect the voltages recommanded by the calc are too low. Maybe I'm mistaken ?
Appreciate any help !

Same problem i am having, when i enter the Dram settings my system will not boot.. I think, we need a update on the Dram Calculator..

 

[equlizer]

The calculator is just somewhat of a guide on timings you could use. You have to experiment yourself with the settings. Try the safe settings and go from there. Change one setting at a time, reboot and test and so on. IMO, most settings don't really do anything except stress the memory and the SOC. You can try my settings if you like and go from there. Always try and check AIDA64 for your memory latencies each time and the read speed benchmark. Getting the lowest timings doesn't mean anything if its not actually gaining you anything. Your SOC should be no more than 1.125 for daily.

Trfc=288, Trc=80 (can try lower), Trrds and Trrdsl=4, Tfaw=16 (Tfaw=4xTrrd), Keep twTr_s and -L at auto and Trtp at auto as well.