Ram for crossfire hero viii and ryzen 3950x

[Karmal]

Hello everyone I ask you experts ... I have an ASUS ROG Crosshair VIII Hero wi fi with ryzen 3950x and rtx 2080 ti, I state that as bios I have the 2702 all by default in docp and everything was stable, never a problem or a smooth shutdown for 6 months this with the 3000 mhz ram hiper x fury kit of 64 gb (4 modules of 16 gb), the problems arose when I changed this ram with a 128 gb kit always hyper x fury at 3600mhz (4 banks of 32gb) among other things certified in the vendor list asusu bios the same and always all by default in docp .. the problem that I have sporadic random reboots even two a day even just surfing the internet and sometimes the pc instead of restarting remains black screen due to it physically turn off with the power button then it restarts normally I did a test cycle of about 11 hours with memetest but it did not find any errors, do you have any solution? is it better to replace the ram modules I had before? ... gives me the idea that this motherboard does not support 128 gb of ram even under windows 10 pro

 

[sneekypeet]

You do not mention any adjustment to SOC to help deal with the increased density.

 

[Nuckles56]

You do not mention any adjustment to SOC to help deal with the increased density.

^^^This, chances are if you give it a bit more SOC voltage, you should be right

 

[Karmal]

You do not mention any adjustment to SOC to help deal with the increased density.

the soc is by default at 1,100

 

[sneekypeet]

the soc is by default at 1,100View attachment 179439

Which it really close to what my hero sets for 16gb kits 1.08v. Raise it a bit and test. You can always tweak it later.

 

[Karmal]

I have 4 banks of 32 gb how much should I increase in order not to overheat the rams

 

[sneekypeet]

I have 4 banks of 32 gb how much should I increase in order not to overheat the rams

There are two schools of thought on this. You shouldn't need past 1.20V to make this happen, but that is also the higher end for what I would say is potentially "safe" to run long term.... Nobody really knows yet though as its only been a couple years for these CPUs.

I say bump it a little at a time, maybe 0.01-0.02V bumps, see if it works, if not, try another bump. You could also start at say 1.8V and if it works, work your way back to instability, raise the voltage a notch or two, and go about life.

 

[EarthDog]

I have 4 banks of 32 gb how much should I increase in order not to overheat the rams

The SOC doens't have anything to do with overheating the RAM. The SOC voltage is for the Integrated Memory Controller (IMC) on the CPU.

As sneeky has said, bump it up bit by bit and see what the minimum is needed to be stable in your work.

questo è il mio kit

English, please.

"This is my kit".

 

[Karmal]

sorry the site translates me automatically.. this is my kit chip micron...Are my settings correct?

 

[EarthDog]

I don't think so, no...

In order to run 3600 MHz, the primary timings are 18-22-22-36. That shows 16-16-16-36 for 3600 MHz. With 128GB, you likely will need to run it lower using the 3000 MHz profile (and still add SOC voltage)..

What does CPUz, the memory tab, say?

 

[Karmal]

I don't think so, no...

In order to run 3600 MHz, the primary timings are 18-22-22-36. That shows 16-16-16-36 for 3600 MHz. With 128GB, you likely will need to run it lower using the 3000 MHz profile (and still add SOC voltage)..

What does CPUz, the memory tab, say?

says this I am attaching the screenshots now that I am writing it is two days that it is on and has not done any reboot ... strange

As not mentioned I just had a problem restarting black screen the pc did not start ... I had to physically turn off and on again.
i am ignorant on the subject how does the soc rise from bios? I guess to do this you cannot activate docp .. is there any guide on this .. thanks

need to raise only the soc or is there something else on here to act? on bios it was at 1080 I just raised to 1090 where can I go?

 

[Karmal]

Which it really close to what my hero sets for 16gb kits 1.08v. Raise it a bit and test. You can always tweak it later.

Why do you have 4 16GB banks? I still have 4 banks of 16 gb that I had before at 3000mhz and with docp I have never had problems with random shutdown without touching the soc

 

[sneekypeet]

Why do you have 4 16GB banks? I still have 4 banks of 16 gb that I had before at 3000mhz and with docp I have never had problems with random shutdown without touching the soc

I think you missed my point. SOC is voltage for the memory controller on the CPU. If the motherboard auto sets 1.08 to 1.1V as the default for an 8X8GB kit...16GB, it only makes sense you will need more of it the more density you add. I hope that clears up what I was saying.

 

[Karmal]

I think you missed my point. SOC is voltage for the memory controller on the CPU. If the motherboard auto sets 1.08 to 1.1V as the default for an 8X8GB kit...16GB, it only makes sense you will need more of it the more density you add. I hope that clears up what I was saying.

As you see in the above screenshot of pc probe by default I have 1100 in docp and this produces instability unless that is the setting on here to act so I should go beyond 1100 little by little? am I a beginner on these settings and I would not damage but I would not even want to go back to the old ram but I think it will be the most convenient solution to have a stable system to work on

 

[rbgc]

Try rollback to BIOS version 2103, last BIOS only for Zen2 with AGESA 1.0.0.2. It was rock solid BIOS almost with any Zen 2 CPU, QVL memory kits and DOCP. If you want newer BIOS, try version 2311.

 

[Karmal]

Try rollback to BIOS version 2103, last BIOS only for Zen2 with AGESA 1.0.0.2. It was rock solid BIOS almost with any Zen 2 CPU, QVL memory kits and DOCP. If you want newer BIOS, try version 2311.

I have already tried to go back to 2311 but the situation does not change, I think the crossfire hero viii with ryzen 3950 does not digest 128gb of memory at 3600mhz even if certified by asus
I will try to make the last attempts by increasing the vddsoc in steps of 0.2 above 1100 even if I doubt it will work

 

[sneekypeet]

As you see in the above screenshot of pc probe by default I have 1100 in docp and this produces instability unless that is the setting on here to act so I should go beyond 1100 little by little? am I a beginner on these settings and I would not damage but I would not even want to go back to the old ram but I think it will be the most convenient solution to have a stable system to work on

All of the information on how to go about changing SOC is in post #7. In essence, I believe 1.10V on the SOC is not enough to run all of the density you have installed.

 

[Karmal]

All of the information on how to go about changing SOC is in post #7. In essence, I believe 1.10V on the SOC is not enough to run all of the density you have installed.

I would like to know where to act for now I have limited myself only to that ... what should I change? having a screen of the bios where to act would make it easier for me .. is it not enough to just raise the vddsoc? when we talk about 1.8v we talk about this?

 

[sneekypeet]

I would like to know where to act for now I have limited myself only to that ... what should I change? having a screen of the bios where to act would make it easier for me .. is it not enough to just raise the vddsoc? when we talk about 1.8v we talk about this?

Unless that 1.8V you mentioned in what I am quoting is a typo, you are way off on that voltage!

Do this...
Reboot, repetitively press the delete key until you get into bios.
Once in bios, use the right arrow to select "Extreme Tweaker" section.
Scroll down a fair bit until you find something called "CPU SOC Voltage.
Set that to 1.20V and hit enter.
Go to "EXIT" tab at the top and "Save Changes & Reset" hit enter twice, and reboot the system.
Test and see if the increase in voltage has helped.

 

[Karmal]

Unless that 1.8V you mentioned in what I am quoting is a typo, you are way off on that voltage!

Do this...
Reboot, repetitively press the delete key until you get into bios.
Once in bios, use the right arrow to select "Extreme Tweaker" section.
Scroll down a fair bit until you find something called "CPU SOC Voltage.
Set that to 1.20V and hit enter.
Go to "EXIT" tab at the top and "Save Changes & Reset" hit enter twice, and reboot the system.
Test and see if the increase in voltage has helped.

yes of course that's what I did but I didn't go more than 1.10 and I made the change here as you see in the picture I think it's right the screen is not mine is to give an example where you go to act

 

[sneekypeet]

Raise yours. I'm not sure how many ways I can explain this.

 

[Karmal]

Raise yours. I'm not sure how many ways I can explain this.

yes I wanted to make sure it was the right parameter to change since there are those who say they also intervene on other parameters .. thanks I'll see if it improves up to what voltage can I push me?

 

[sneekypeet]

Shouldn't need more than 1.20v, but every system is a bit different.

 

[Karmal]

VDDG CCD
VDDG IOD
VDDP
they should not be touched?

 

[dgianstefani]

Ccd and iod can be 1.075 and vddp can be 1.050v