not necessarily. with both, EDC and all core OC you could be using too much voltage during heavy stress loads.

I personally do it like this. I test how much voltage the cpu is using on stock for small FFTs @Prime95.
For example that's 1.25V (after vdroop) for my 8 core chip. (its slightly different for every chip)

So if I set EDC to 1 I'd be getting ~1.28V and with an all core overclock I'd be seeing whatever voltage I set - vdroop (depending on LLC) which would in most instances still be higher than 1.25V.

So unless you get to know how much of a safety buffer AMD applies to their voltage protection algorithms noone can possibly tell how much additional to 1.25 in this instance is save under those max load states.

Ye for me EDC is behaving differently then on the boards I tested it with (C7H, X570 Unify) but not really much into figuring why since I am not using it.
That's why others should at least try it before, at least.

Using LLC to low(est) is very good. I think buildzoid had a pretty nice video on this (https://youtu.be/9pa9-wjKQp8)

Ye as long as you don't plan to sell the chip without mentioning that should be fine
After getting such a lemon u'd deserve a better one anyways

This post has been edited by nrw: Jun 6 2020, 10:24 AM

yep, SC seems about right now.
fingers off any software that can mess with bios settings/config, or powerplans then

If you told any1 that this b350 board would be able to run ram @4.6GHz during Zen or even Zen+ times they would have sent you for psychological check up
If you got the time try dropping SOC VDDG and VDDP. Too high can also get those sticks to run really unstable. Even at these frequencies.

This post has been edited by nrw: Jun 12 2020, 04:53 PM

it's Micron E-dies I suppose?
Then go with
VSoC 1.05-1.075V max 1.1V
VDDG 0.95-0.975V
VDDP 0.855-0.95V

don't trust thaiphoon burner blindly. I've myself seen it more than once giving wrong info on dies.

@k!nex fine kit, haven't tested stability?
I have my doubts its really stable with this tRAS @21 with tCL and tRCDRD at 14 each.

what did the 042 code look like on your tridentz 3600c18?

last 3 digits 10 is samsung, c is c die

Tbh, if you buy at local stores, just check the corsair vengeance 3600 (maybe even 3200) kits.

The version number is visible through the backside of the sealed boxing.
v4.31 would be b-dies.

This post has been edited by nrw: Jun 19 2020, 02:18 PM

for some manufacturers the sticker on the ram holds the information needed.
as you can see with corsair and g.skill.
2 posts up you see v4.32, that's always samsung c die for example.
the safest would be to look below the heatspreader/sticker, but that's not always easily possible and could also void warranty.

if you have the sticks already the most convenient way you can confirm is by testing few values and voltage scaling characteristics to figure what dies are on them.
but you probably know that anyways.

This post has been edited by nrw: Jun 19 2020, 04:25 PM

1) G.Skill got that 042 code, most important are the 3 last digits. NNX
NN=10 = Samsung
NN=21 = Hynix
X=The Die

2) What's the other primaries and the voltage for the 3600 profile?

To be frank... you use Zen2, just get a Micron E-Die Kit and adjusting timings yourself.
U'll spend (less than) half of RM854 and will get almost same performance.

This post has been edited by nrw: Jun 20 2020, 09:12 AM

choose the one with lower voltage (3733). even though worse on paper you hardly gonna notice the difference.
e-dies hard to get as micron not selling the kits that are e-die exclusive in malaysia.
you can get corsair sticks with them but that's a gamble.
best is to order overseas. I can just add a kit to my next order if you want, just send me a pm.

but seeing you managed to oc your ram, just keep it n go with that.

I'll just drop some basic B-Die settings from my record here.
I haven't had a kit that wouldn't run these on zen2.
but actually seeing your numbers above... those might be c-dies



This post has been edited by nrw: Jun 23 2020, 10:30 AM

that one is very debatable

You are being constrained by your cooler
But a nice chip, shows why they are releasing the XT series soon.

Now you gotta play with voltages to get 1900 fclk working, you can't stop before that.

This post has been edited by nrw: Jun 20 2020, 06:54 PM

a)
for 4 sticks rtt write should never be off. keep it on /3 (or 80 for those with other boards but same issue)

don't blindly follow calc if you see or presume it works better otherwise. end of the day, it's just a database which spits out stuff based on your input.
it doesn't exactly calculate anything specifically for your kit.

b)
keep running 3800MHz. If you can't get it to work on CL14 just run it on CL16 with lower voltage, GDM on, and 1T.
You need to share more info (use zentimings for timings + list down used voltages, procodt, cad's, and rtt's

@steven789 for a locally bought chip you got a nice one.
I feel AMD keeps supplying local distributor with quite dated stock.
Mostly I see 2019 production weeks in stores.
My 8c does 4.325 with your voltages (I allow for more vdroop, its good to prevent undershoot after all.), so your's is quite a bit better (on manual OC at least). Especially taking cooling and temps into consideration.

This post has been edited by nrw: Jun 21 2020, 06:30 PM

https://github.com/irusanov/ZenTimings/rele...ings_v1.0.4.zip

I thought u were on 2T CL15? Guess you already changed to 1T CL16 now?
Doesn't look to bad already if that's stable.


I'll just steal 'my' (stole most if it myself ) old 3733 4x8 config, if you got nice sticks it might work on 3800.
try this if you like:

ProcODT 36.9 (should do already)
RTT 7/3/1
CADs 24-20-20-24 (or 24-20-24-24, 24-24-24-24)
Vdimm 1.50V (you have some airflow on the ram, right?)
SOC 1.10V

left ur current settings, right the ones to try


if you don't have airflow just keep it on c16 if that's already stable. good luck.

This post has been edited by nrw: Jun 21 2020, 08:12 PM

ye ofc, gdm can only operate with even numbers. I was just expecting to see your c15 setting in the screenshot

Read up 🤣 thats what he was asked to set. So he done that.


You can try to raise tRFC to 280 n see if it posts.
You can use the safe boot button btw, no need to clear cmos.

Edit: @k!nex VDDG to 1.05V? poor IMC.
for B-Dies just keep between 0.95V & 1V. Try what suits your chip.


This post has been edited by nrw: Jun 21 2020, 09:47 PM

Auto != correct

Good boards will have no issue having it in the range I proposed. He does have a very good board. There are some bad ones where you can increase the range until 1.05V but that's just unnecessary stress and pointless to be done as long as the infinity fabric is stable.

Oh, don't get me wrong btw, I'm not saying its the wrong voltage for you.
But usually when I test fclk stability I start with .95V and almost always get it stable below 1V.
If your IF doesn't run stable below that value ur fine to have it. But if it'd work on a lesser voltage it'd be a waste not to do so.