DRAM calculator for Zen 3

[Zach_01]

If case airflow is good then you shouldn’t face any thermal issues up to at least 1.45V DRAM voltage.

For starters:
16-18-18-18-36-54 (first 6 of ZenTimings)
tRFC: tRC x 6 + 8 = 332

If you want try straight
16-16-16-16-34-50 (first 6 of ZenTimings)
tRFC: tRC x 6 + 8 = 308
or
tRFC: tRC x 5 + 8 = 258

 

[JawnyS]

oh did try that anything below 19 for trcd will give me error almost instantly for some reason with these stick at this frequency even at 1.5 v, as i said earlier its samsung b-die but not the pcpb variant, it is bcrc one, i suspect i cant tighten the timing as much on this one

 

[JawnyS]

ok so i didnt change any timing, but i did do trc x5 + 8 with the timings i have wich gives me 308 and im getting between 56.2 and 56.5 on aida now, i cant lower trcd for some reason, i havent tried to lower trp, and i believe i have room to lower trc as well, getting close to 55ns now

 

[Zach_01]

is it something to do with amd high voltage?

What do you mean by that? (honest question)

ok so i didnt change any timing, but i did do trc x5 + 8 with the timings i have wich gives me 308 and im getting between 56.2 and 56.5 on aida now, i cant lower trcd for some reason, i havent tried to lower trp, and i believe i have room to lower trc as well, getting close to 55ns now

You can try tRFC 248 (60x4+8)
or
tRC: 58
tRFC: 298 or 240

I dont have a clue why tRCDs, tRP cant play below 19.

Another question
Do you have Rtt (Nom, Wr, Park) on auto or these are manual settings? I think 99% of 4 stick configurations have those at RZQ 7/3/1 respectively.

 

[Space Lynx]

I gave up on ram overclocking, it will be stable for a full week then give me random errors. I find it's best just to use XMP since my mobo supports my ram QVL - and just be happy I have anything at all

/shrug

 

[JawnyS]

What do you mean by that? (honest question)


You can try tRFC 248 (60x4+8)
or
tRC: 58
tRFC: 298 or 240

I dont have a clue why tRCDs, tRP cant play below 19.

Another question
Do you have Rtt (Nom, Wr, Park) on auto or these are manual settings? I think 99% of 4 stick configurations have those at RZQ 7/3/1 respectively.

i did put rzq at 7 3 1 , still cant lower trcds without errors, like i said on taiphoon burner my ram is stated at b-die but its bcrc one, most user with good overclock have b-die but the pcpb one, i havent seen much data on the bcrc variant of b-die to be honest

 

[Zach_01]

I see
Mine is BCPB but I dont have a clue of it either. PCB revision is A0.

 

[Finnedsgang]

i'm trying to use the dram calculator with a 5800x on a x570 motherboard and a kit 2x16gb Crucial Ballistix Max RGB Micron Bdie with a 4000mhz 19-18-18 but everthyng i try i have a message "not supported" ...
Can someone help?

 

[Zach_01]

i'm trying to use the dram calculator with a 5800x on a x570 motherboard and a kit 2x16gb Crucial Ballistix Max RGB Micron Bdie with a 4000mhz 19-18-18 but everthyng i try i have a message "not supported" ...
Can someone help?

It means Micron's B-dies wasnt tested in that speed so the calculator doesn't have the appropriate profile for it.

 

[Finnedsgang]

So i have to lower the clock ?

 

[JawnyS]

So i have to lower the clock ?

i would try the timing you get at the higher frequency dram calculator is giving you and work from that

 

[PDK]

Any news about zen3 timing calculator? Im using Ryzen Dram calculator but results are not the best i think.

 

[equlizer]

the calculator is just an educated guess. you need to read up on

MemTestHelper/DDR4 OC Guide.md at oc-guide · integralfx/MemTestHelper

C# WPF to automate HCI MemTest. Contribute to integralfx/MemTestHelper development by creating an account on GitHub.

github.com

https://www.reddit.com/r/overclocking/comments/ahs5a2

 

[chr0nos]

the calculator is just an educated guess. you need to read up on

MemTestHelper/DDR4 OC Guide.md at oc-guide · integralfx/MemTestHelper

C# WPF to automate HCI MemTest. Contribute to integralfx/MemTestHelper development by creating an account on GitHub.

github.com

https://www.reddit.com/r/overclocking/comments/ahs5a2

TLDR; just use XMP save the headache for just a crappy fps more

 

[Space Lynx]

I don't know where else to ask this, but I think the guy who made the dram calculator is also making one for rx 6800 xt gpu's, can anyone confirm if this is still being done? or am i remembering wrong @P4-630 I feel like I remember you posting something about this, but I can't find the post on it anymore.

 

[P4-630]

I don't know where else to ask this, but I think the guy who made the dram calculator is also making one for rx 6800 xt gpu's, can anyone confirm if this is still being done? or am i remembering wrong @P4-630 I feel like I remember you posting something about this, but I can't find the post on it anymore.

I had to dig in my older posts but I think you meant this:

The RX 6000 series Owners' Club

I really wish they did a proper driver already for windows 11 22h2 Microsoft released a new driver again i know their opengl driver is stable for me, but the AMD control panel does not work unless i reinstall the entire system, because it refuses to install whole driver, another thing atleast...

www.techpowerup.com

 

[Space Lynx]

I had to dig in my older posts but I think you meant this:

The RX 6000 series Owners' Club

I really wish they did a proper driver already for windows 11 22h2 Microsoft released a new driver again i know their opengl driver is stable for me, but the AMD control panel does not work unless i reinstall the entire system, because it refuses to install whole driver, another thing atleast...

www.techpowerup.com

thats the one i meant yep, thanks! going to see if anymore news on this.

 

[bat33]

hi guys very interesting topic here.

i just switched from R5 3600 to R7 5700X, i have 2x8gb flareX bdie kit 3200CL14 which was running at 3600CL16 on my previous R5 3600.

i would like to start with 3600CL16 as well on the 5700x as baseline, i was wondering if i should set same SOC, VDDP and VDDG CCD/IOD voltage on the 5700X ?
i was at 1.05V soc, 0.9 VDDP and 0.950 VDDG CCD/IOD.

thanks

 

[VuurVOS]

hi guys very interesting topic here.

i just switched from R5 3600 to R7 5700X, i have 2x8gb flareX bdie kit 3200CL14 which was running at 3600CL16 on my previous R5 3600.

i would like to start with 3600CL16 as well on the 5700x as baseline, i was wondering if i should set same SOC, VDDP and VDDG CCD/IOD voltage on the 5700X ?
i was at 1.05V soc, 0.9 VDDP and 0.950 VDDG CCD/IOD.

thanks

Every CPU is different. Some need more, some need less voltage. The voltage should be about the same as the Ryzen 3000 series.

I have a 5900X with memory running at 3733CL16 (also b-die). The following voltages I am using:
VSOC 1.100V
CLDO VDDP 0.900V
VDDG CCD 0.950V
VDDG IOD 1.000V

 

[bat33]

Every CPU is different. Some need more, some need less voltage. The voltage should be about the same as the Ryzen 3000 series.

I have a 5900X with memory running at 3733CL16 (also b-die). The following voltages I am using:
VSOC 1.100V
CLDO VDDP 0.900V
VDDG CCD 0.950V
VDDG IOD 1.000V

Thanks for this, i first applied exact same setting as my R5 3600 ( 3600CL16 ) and i wasnt even able to post, so i set all timings on auto except first timing set at 16 16 16 16 32 and still no post, had to clear cmos each time.
turned on DOCP 1 profile and i posted 3600CL14 (but error in TM5) , pretty weird it can post 3600CL14 docp on but not 3600CL16 docp off, i believe DOCP profile help in some way but dunno how, so i turned back primary timing to 16 16 16 16 32 and TRFC to 288 for 3600mhz with DOCP 1 on, and passed the whole TM5 1usmus profile in 2hours, at least ive got a stable baseline, will work from here now.

 

[VuurVOS]

Thanks for this, i first applied exact same setting as my R5 3600 ( 3600CL16 ) and i wasnt even able to post, so i set all timings on auto except first timing set at 16 16 16 16 32 and still no post, had to clear cmos each time.
turned on DOCP 1 profile and i posted 3600CL14 (but error in TM5) , pretty weird it can post 3600CL14 docp on but not 3600CL16 docp off, i believe DOCP profile help in some way but dunno how, so i turned back primary timing to 16 16 16 16 32 and TRFC to 288 for 3600mhz with DOCP 1 on, and passed the whole TM5 1usmus profile in 2hours, at least ive got a stable baseline, will work from here now.

This is the config I am currently using. Keep in mind RttNom, RttWr and RttPark should be different when only using two dimms. Zentimings shows a lower VSOC voltage while 1.1v is set in bios.

 

[bat33]

This is the config I am currently using. Keep in mind RttNom, RttWr and RttPark should be different when only using two dimms. Zentimings shows a lower VSOC voltage while 1.1v is set in bios.
View attachment 323759

thanks again for this, DOCP set it like this

its been stable so far so i wonder if i should touch it.

edit : im on B450 gaming plus max

 

[VuurVOS]

thanks again for this, DOCP set it like this View attachment 323763 its been stable so far so i wonder if i should touch it.

edit : im on B450 gaming plus max

No need to change it. This should be fine for 2x single rank memory.

 

[harm9963]

Every day use , not trying to set records , its a old system now , going on three years now, except PSU - M.2 X2 - 4090 .

 

[bat33]

This is the config I am currently using. Keep in mind RttNom, RttWr and RttPark should be different when only using two dimms. Zentimings shows a lower VSOC voltage while 1.1v is set in bios.
View attachment 323759

i managed to get 3800 16 16 16 16 32 48 TRFC 304 stable by setting only these timing and let others on auto, which are pretty lose tho like tfaw 40 or TWR 26.

as soon i try to tight TRRDS TRRDL and TFAW i get error in TM5 1usmus profile, i tried first trrds 4 trrdl 6-8 tfaw 16 and get error so tried 5 - 7 - 20 and still get error, last was error 0 at cycle 7.

based on the error sheet could be TRRD related or too low vdimm, so might try raise to 1.45 sticks run pretty cool ( 41°c at full load ) i was able to get trrds 4 trrdl 8 tfaw 16 at 3600mhz.

edit : noticed tcwl was lower than tcl on auto, might try set it to 16