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A guide to ram overclocking on Zen 3

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#461 ·
So, it failed hci at 2%.
I tried to raise trdd, still error.
Then I tried to raise pretty much everything 2. Still errors.
Then I increased vsoc to 1.1375v and I'm error free 100%... Might be able to bring it down a tad.
I'll revert back all the timmings changes, keep the vsoc and see If I'm still error free.
I'm also running 1.32v, seems to like that the most.
 
Discussion starter · #462 ·
lawood said:
So, it failed hci at 2%.
I tried to raise trdd, still error.
Then I tried to raise pretty much everything 2. Still errors.
Then I increased vsoc to 1.1375v and I'm error free 100%... Might be able to bring it down a tad.
I'll revert back all the timmings changes, keep the vsoc and see If I'm still error free.
I'm also running 1.32v, seems to like that the most.
Click to expand...
4xSR may require quite high SOC and IOD.
 
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#463 ·
Yeah, i knew that I had to increase vsoc, i went with 1.1v on bios but vdroop made it 1.0873.
Now I'm running 1.1550 and with vdroop it goes 1.1313.
Both iod and ccd seem ok with 1v.

The 3600 profile is much better now, its pretty much done.
Light Product Font Line Screenshot


tertiaries are on the absolute limit, even the sc's that were previously at 1. The sc's might be able to do 2 but I wont test that anytime soon.
The trdwr and twrrd were a pain, both wont go any lower. And were the source of many of my initial problems, I thought other timings were to blame, nop, these were the ones.
scl's can do 4, thats kinda nice.
All the rest of the tertiaries are also on the limit, any lower and I get hci errors or in the worst case no boot.

So I turned to the timmings and subtimmings:
Trtp and twr are on the limit.
trrd's to 4 6, on the limit.
tfaw to 24. Might be able to do 16, unsure yet
trcdwr to 18. Might be able to do 8.
tras and trc on tightened on the limit.
I'll try to tighten trcdrd and trp but I wont hold my breath.

Dont look at the trfc, thats the last timing ill tighten, its higher than auto atm lol
 
Discussion starter · #464 ·
lawood said:
Yeah, i knew that I had to increase vsoc, i went with 1.1v on bios but vdroop made it 1.0873.
Now I'm running 1.1550 and with vdroop it goes 1.1313.
Both iod and ccd seem ok with 1v.

The 3600 profile is much better now, its pretty much done.
View attachment 2601685

tertiaries are on the absolute limit, even the sc's that were previously at 1. The sc's might be able to do 2 but I wont test that anytime soon.
The trdwr and twrrd were a pain, both wont go any lower. And were the source of many of my initial problems, I thought other timings were to blame, nop, these were the ones.
scl's can do 4, thats kinda nice.
All the rest of the tertiaries are also on the limit, any lower and I get hci errors or in the worst case no boot.

So I turned to the timmings and subtimmings:
Trtp and twr are on the limit.
trrd's to 4 6, on the limit.
tfaw to 24. Might be able to do 16, unsure yet
trcdwr to 18. Might be able to do 8.
tras and trc on tightened on the limit.
I'll try to tighten trcdrd and trp but I wont hold my breath.

Dont look at the trfc, thats the last timing ill tighten, its higher than auto atm lol
Click to expand...
Good job. Remember that FAW=RRDSx4 so try 6/8/24, 5/7/20 or 4/6/16 :) 5/7/20 is faster than your current 4/6/24 as it is actually running 6/6/24. Try RCD, RP and RFC next :) 21 21 pn RCD/RP should work and 560-570 on RFC should work. Looking at your timings this kit behaves very similar to 2 Samsung D-die-kits I tuned a while ago. Most timings behaved the same.
 
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#465 ·
So, i tried to tune trfc last, and believe it or not 650 is the limit, meh. 599 doesnt boot.
619 gave me errors at 110%, 629 gave errors at right way.
Then I tried 640, errors aproaching 100%..
Then I dialed in 650 again a behold, error free.
Enough C die fun lol

Colorfulness Light Product Rectangle Font
 
Discussion starter · #466 ·
lawood said:
So, i tried to tune trfc last, and believe it or not 650 is the limit, meh. 599 doesnt boot.
619 gave me errors at 110%, 629 gave errors at right way.
Then I tried 640, errors aproaching 100%..
Then I dialed in 650 again a behold, error free.
Enough C die fun lol

View attachment 2601756
Click to expand...
Nice! A bit disapointing RFC, but except for that good job. Maybe there is some voltage scaling involved?Try exploring the RRD/FAW tuning. That timing is very important in games.

I actually enjoy helping with tuning rare kits. It' more fun than the easy kits like SR B-die, rev E/B and DJR which often can be finished tuning in an hour or 2. A bit of challenge is fun :) I wasn't expecting that good of a result from C-die. If you had a 5800X I would recommend getting 4x cheap DJR or B-die to gain 10-15% more performance, but with 3D the most you can expect is 2-4% so not worth it. Enjoy using tuned C-die in DR and know that your 5800X3D is now faster than 99% of the rest of 5800X3Ds out there 😀
 
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#467 ·
Yeah, i share the same belief, c die is harder to OC, info available is scarce.
A very fine balance is needed otherwise stability is never found.
With b die you can dial in random numbers almost, and if the oc is unstable you just need to dump voltage into it. Kinda jelly.
I also think the trfc limit is a voltage restriction. Ill try to bring some timmings down in the future but for now I want to actually use the pc :p
Ill keep stress testing this profile to death to make 1000% sure its stable. Already did multiple 100% hci and that 200% one. tm5 usmus 20 cycles also passed. Seems promising.
 
Discussion starter · #468 ·
lawood said:
Yeah, i share the same belief, c die is harder to OC, info available is scarce.
A very fine balance is needed otherwise stability is never found.
With b die you can dial in random numbers almost, and if the oc is unstable you just need to dump voltage into it. Kinda jelly.
I also think the trfc limit is a voltage restriction. Ill try to bring some timmings down in the future but for now I want to actually use the pc :p
Ill keep stress testing this profile to death to make 1000% sure its stable. Already did multiple 100% hci and that 200% one. tm5 usmus 20 cycles also passed. Seems promising.
Click to expand...
Yeah. All I know about C-die is that they generally dislike voltages above 1.35. I think I saw one kit running fine at 1.37v, but over that they tend to give errors, misbehave etc. They seem somewhat temp-sensitive so they are generally a terrible kit, sort of like Samsung D-die, Hynix AFR etc, but with the right balance they can be drscent like yours :) If TM5 passes 20 cycles I don't care about other tests. There are no games and very few apps that stress ram to that amount (except linpack, y-cruncher and some weird benches, but actual production apps generally don't behave like that) so it will be rock solid in daily use. My B-die gets errors in TM5 once temps passes 44C, so technically not stable, but the highest temp I have gotten in gaming is 36C so big safety margin, maybe in the hottest part of summer it can pass 40C during load.
 
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#469 ·
Yeah, I actually never tried less than 1.35v (i did try 1.34 at some point), then I read what you wrote, then i found a old buildzoid video where he oc's c die to 3600 cl 18, with MUCH better results, especially trfc, but im no buildzoid :p , worth pointing out it was 2x8gb sr, that helped for sure.
1.33v was actually giving me problems with all the loose timmings. They seem to really like 1.32v.
1.32v was also the voltage buildzoid used but i actually found that video out when I was already trying to stabilize at 1.32, so that was a nice little confirmation that i was on the right track.

Ill still do prime and y cruncher but this seems really promising. Especially prime, need to be stable there for 100% peace of mind, usually 1 hour blend is enough for me.
I really never liked y cruncher, I find that prime is heavier and better for finding errors. I might be wrong tho.
 
Discussion starter · #471 ·
Xeleron said:
Sorry for the late reply. I seem to have two Micron 8Gbit Rev.E 16GB sticks. What are my options with these?
View attachment 2601779
Click to expand...
Those are easy to tune and has a lot of potential :) Do you know if ram works fine at 3800/1900 or 3733/1866? Set all timings to auto and try that first. Post zentimings screenshot and I can try to help :)
 
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#472 ·
I finally settled on a 3533 profile, can do much much tighter timmings. Will share later.
And I tried 3466mhz cl16, I know the sticks can do it but some subtimmings needs to be loosened because my bios turned chinese and was claiming there was no boot driver outside the bios.
Thankfully a bios reset solved it all. 😅
 
#473 ·
Hi Taraquin, hi everyone,

I read the whole topic and I must say it got me interested (especially the page where you Taraquin told someone he was close from the specs of a 5800x3D with his overclock)

My gaming / video editing rig might be somewhat weird to some (some will tell me I should have gone for a 12600k or a 5800x3D) but I got all my components at a very good price (a year ago I wanted a 5900x but it was out of stock and I finally got a 5950x for 500 USD, and 128 Gigs of 3600 Mhz C18 Kingston Fury for 300 USD, I saw it as an investment considering I spend more and more time in front of my screen doing video editing in addition to games)

so you guessed it, I have a 5950x, a gigabyte Aorus Matser x570s, 128 Gb of Kingston Fury (4 dims) , a 6900XT Asrock and a 800 watts PSU.
In your first posts Taraquin you were saying it's pretty hard to get four modules running with a stable overclock.

Can you have a look at my RAM specs (Hynix AJR) and tell me what I can expect getting with these?

(sorry if my picture is in two parts, I am using a weird TV as a monitor right now)

The thing is that among the games I play, there is a lot of emulation (believe it or not but I love playing Gran turismo 5 and Wipeout HD on rpcs3) I get very decent performance despites being ps3 games (60 FPS in Wipeout HD and somewhere between 40 to 60 in GT5, which will probably impove along the time with the emulator) so buying a 5800x3D wouldn`t benefit me on all aspects (I now the thing is a beast for PC gaming but i feel I`'m on the edge wth my 5950x which has better frequencies, the most important thing regarding emulation with rpcs3)
...
so I wish I could squeeze a bit of extra performance (to have my rig last as much as possible and keep playing rpcs3 at the same time)

here are my questions:
(keep in mind I come from an Intel 4790k, OC at 5 Ghz which was extremely easy by the way, but I never reached to overclock my ram)
1. what lack of perfromance do I get if i set my Ram clocks at 3800 mhz (1900 Mhz x2) without upping the fsb of my CPU at 1900 Mhz ? (i know it will affect latency, but to what extent? will I feel it in gaming? will it impact my gameplay? or will it just add a few seconds when decompressing or doing video editing?
I dont want to overclock my 5950x (the thing gets HOT, very HOT, with pbo.... I actually had to set a limiter in my bios ,called "offset", to get my CPU below 85 degrees when cinebenching)
I just want to overclock my memory if that is posssible.

2. what frequences can i get out of my 3600 memory kit? and with what settings?

Thx if you can help
(I really s#ck at memory overclocking)
 
#476 ·
Kaliz said:
What have you tried for settings yourself and do you have a Zentimings screenshot of your setup please?
Click to expand...
I havent tried anything.

When I had my i7 4790k, I tried and I think it damaged my sticks (cause they woudnt even support xmp profile at some point) and I had to replace them (not sure though if they hadnt been damaged and then RMAed before with other user though...) so I didnt want to try anything crazy this time and wanted the advice of some people first
 

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#477 ·
DigitalFOXX said:
I havent tried anything.

When I had my i7 4790k, I tried and I think it damaged my sticks (cause they woudnt even support xmp profile at some point) and I had to replace them (not sure though if they hadnt been damaged and then RMAed before with other user though...) so I didnt want to try anything crazy this time and wanted the advice of some people first
Click to expand...
aah ok, if you follow the guide step by step adjusting the timings in your BIOS. I assume you know how to do that in the BIOS. The guide is on page 1 it really straight forward. My suggestion: Leave the primary timings 18-22-22-22 and the rest make it a lot tighter. Also set your RAM voltage a bit more like 1,38V or something.
 
Discussion starter · #478 ·
DigitalFOXX said:
Hi Taraquin, hi everyone,

I read the whole topic and I must say it got me interested (especially the page where you Taraquin told someone he was close from the specs of a 5800x3D with his overclock)

My gaming / video editing rig might be somewhat weird to some (some will tell me I should have gone for a 12600k or a 5800x3D) but I got all my components at a very good price (a year ago I wanted a 5900x but it was out of stock and I finally got a 5950x for 500 USD, and 128 Gigs of 3600 Mhz C18 Kingston Fury for 300 USD, I saw it as an investment considering I spend more and more time in front of my screen doing video editing in addition to games)

so you guessed it, I have a 5950x, a gigabyte Aorus Matser x570s, 128 Gb of Kingston Fury (4 dims) , a 6900XT Asrock and a 800 watts PSU.
In your first posts Taraquin you were saying it's pretty hard to get four modules running with a stable overclock.

Can you have a look at my RAM specs (Hynix AJR) and tell me what I can expect getting with these?

(sorry if my picture is in two parts, I am using a weird TV as a monitor right now)

The thing is that among the games I play, there is a lot of emulation (believe it or not but I love playing Gran turismo 5 and Wipeout HD on rpcs3) I get very decent performance despites being ps3 games (60 FPS in Wipeout HD and somewhere between 40 to 60 in GT5, which will probably impove along the time with the emulator) so buying a 5800x3D wouldn`t benefit me on all aspects (I now the thing is a beast for PC gaming but i feel I`'m on the edge wth my 5950x which has better frequencies, the most important thing regarding emulation with rpcs3)
...
so I wish I could squeeze a bit of extra performance (to have my rig last as much as possible and keep playing rpcs3 at the same time)

here are my questions:
(keep in mind I come from an Intel 4790k, OC at 5 Ghz which was extremely easy by the way, but I never reached to overclock my ram)
1. what lack of perfromance do I get if i set my Ram clocks at 3800 mhz (1900 Mhz x2) without upping the fsb of my CPU at 1900 Mhz ? (i know it will affect latency, but to what extent? will I feel it in gaming? will it impact my gameplay? or will it just add a few seconds when decompressing or doing video editing?
I dont want to overclock my 5950x (the thing gets HOT, very HOT, with pbo.... I actually had to set a limiter in my bios ,called "offset", to get my CPU below 85 degrees when cinebenching)
I just want to overclock my memory if that is posssible.

2. what frequences can i get out of my 3600 memory kit? and with what settings?

Thx if you can help
(I really s#ck at memory overclocking)
Click to expand...
Hynix AJR is very similar to Micron rev E, but they can do lower RC but need higher RP. 3800 without 1900 is not worth it. Try 3733/1866 or 3666/1833 if 3800/1900 is problematic. 4xDR can be challenging, but give ot a shot.

At 3800 a kit I tuned did 1.4V:
CL 16
RCD 21
RP 21
RAS 32
RC 53
RRDS 4
RRDL 6
FAW 16
WTRS 4
WTRL 12
WR 16
RFC 560
RDRDSCL 4
WRWRSCL 4
CWL 16
RTP 8
RDWR 10
WRRD 3
2T
GDM OFF

You could try that, with GDM ON at 3600 it may work. At 3800 I bet you need:
RCD/RP 22
RAS 34
RC 56
RFC 600
RDWR 12
WRRD AUTO
1T
GDM ON
Try rest as suggested above.
 
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#479 ·
Thank you to both of you.
I will give a try and see how my Pc reacts.
I am going to have to spend some time on this because Gigabyte' bioses are a bit complicated compared to the ones of Asus (my first gigabyte motherboard, it is beautiful but lord the Bios is so hard to understand )
 
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