Question 3900x fixed voltage 1.2v dangerous?

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madmatt30

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Depends on paste?

I use cooler master maker nano which is very thick, so on my ryzen 7 I actually spread it over the entire die with the included spatula.


Gp12 is a very nice fan

https://www.globaldata.pt/aircooling/ventoinhas/ventoinha-fractal-design-dynamic-x2-gp-12-pwm-preto-branco-120mm-dyn-x2-gp12-pwm-wt

I have 3 of them in my case, virtually silent.
I use Mx4 Artic, bought it together while buying pc parts

Ok, I can buy probably buy 4 of those? and switch everything on my case?

What's with the 4 pins and 2 pins?


Thanks for helping me, this is really nerve recking has I don't understand :c
 

RodroX

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Sorry for the delay I dived into work for some time and came back to this huge thread lol!

Im with Paaze88 and madmatt30

1 extra 120mm fan at the top will be great (the closest to the rear one, and far away from the cpu one)
And yeah thermal paste should be applied in a way to make sure it covers the entire cpu ihs.

I know this is probably going to sound stupid, but it wouldnt be the first time either. If you will, when you get back home, turn ON the PC and double check the PC case fans are well mounted, with the two fans at the front blowing "fresh" air inside the case, and the one at the back blowing the hot air out of the case.

Airflow should be similar to this: https://w7.pngwing.com/pngs/174/896/png-transparent-computer-cases-housings-power-supply-unit-atx-corsair-components-airflow-obsidian-computer-network-computer-electronic-device.png

MX-4 is a pretty good paste!
 
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madmatt30

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I use Mx4 Artic, bought it together while buying pc parts

Ok, I can buy probably buy 4 of those? and switch everything on my case?

What's with the 4 pins and 2 pins?


Thanks for helping me, this is really nerve recking has I don't understand :c

There are no 2 pins, they're a straight 4 pin pwm fan.

I thought you were just buying one?

I wouldn't buy 4 in any case, maybe 2??

Use those as front intakes because I have virtually no doubt they will be better than the nox fans that are included in the case.

Then use one of the front nox fans as a top rear exhaust and keep 1 as a spare.

Been looking at your board bios, it does support p-state clocking which in essence let's you set different voltages for different load and incremental clock speeds.

However not owning the actual board or a ryzen 9 myself I'm loathe to actually advise on it in any depth.
 
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Sorry for the delay I dived into work for some time and came back to this huge thread lol!

Im with Paaze88 and madmatt30

1 extra 120mm fan at the top will be great (the closest to the rear one, and far away from the cpu one)
And yeah thermal paste should be applied in a way to make sure it covers the entire cpu ihs.

I know this is probably going to sound stupid, but it wouldnt be the first time either. If you will, when you get back home, turn ON the PC and double check the PC case fans are well mounted, with the two fans at the front blowing "fresh" air inside the case, and the one at the back blowing the hot air out of the case.

Airflow should be similar to this: https://w7.pngwing.com/pngs/174/896/png-transparent-computer-cases-housings-power-supply-unit-atx-corsair-components-airflow-obsidian-computer-network-computer-electronic-device.png

MX-4 is a pretty good paste!
Is there any way to know the right side of the fans, like the Logo in the front of it or the design of the fans itself?

yeh Probably bad application ( hope so! ) il try the X and dots between them
 
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There are no 2 pins, they're a straight 4 pin pwm fan.

I thought you were just buying one?

I wouldn't buy 4 in any case, maybe 2??

Use those as front intakes because I have virtually no doubt they will be better than the nox fans that are included in the case.

Then use one of the front nox fans as a top rear exhaust and keep 1 as a spare.

Been looking at your board bios, it does support p-state clocking which in essence let's you set different voltages for different load and incremental clock speeds.

However not owning the actual board or a ryzen 9 myself I'm loathe to actually advise on it in any depth.
Okey I will probably then remount the cooler and apply thermal paste into X shape.
Then put the 2 new fans at front has you suggested, and apply the 2 nox stock ones - one in the back and one in the top has exhaust fans.

I'm so dumb I am even doubting if I currently placed fans correctly, ahah
 

madmatt30

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Is there any way to know the right side of the fans, like the Logo in the front of it or the design of the fans itself?

yeh Probably bad application ( hope so! ) il try the X and dots between them

The front of a fan (the side that pulls air in) will have generally have a centre spindle with the label/branding on and the blade area will be completely clear.

The strut supports are always on the rear side of a fan (the side that throws air out).

So I'm essence for front intakes, the labeled clear side will always be pointing forwards to the front of the case, the struts will be visible from the inside of the case

Vice versa for exhausts the strut side of the fan sits to the case, the labelled spindle open side will always be visible from inside the case interior.
 
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The front of a fan (the side that pulls air in) will have generally have a centre spindle with the label/branding on and the blade area will be completely clear.

The strut supports are always on the rear side of a fan (the side that throws air out).

So I'm essence for front intakes, the labeled clear side will always be pointing forwards to the front of the case, the struts will be visible from the inside of the case

Vice versa for exhausts the strut side of the fan sits to the case, the labelled spindle open side will always be visible from inside the case interior.
This is my computer, got home now. Sharing some photos

https://ibb.co/7YjMxpq
https://ibb.co/ftck38Z
https://ibb.co/Sf5Ydz4

I think everything set on correctly then?
 
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Sorry for the delay I dived into work for some time and came back to this huge thread lol!

Im with Paaze88 and madmatt30

1 extra 120mm fan at the top will be great (the closest to the rear one, and far away from the cpu one)
And yeah thermal paste should be applied in a way to make sure it covers the entire cpu ihs.

I know this is probably going to sound stupid, but it wouldnt be the first time either. If you will, when you get back home, turn ON the PC and double check the PC case fans are well mounted, with the two fans at the front blowing "fresh" air inside the case, and the one at the back blowing the hot air out of the case.

Airflow should be similar to this: https://w7.pngwing.com/pngs/174/896/png-transparent-computer-cases-housings-power-supply-unit-atx-corsair-components-airflow-obsidian-computer-network-computer-electronic-device.png

MX-4 is a pretty good paste!
Sharing photos of the current build right now :)

https://ibb.co/7YjMxpq
https://ibb.co/ftck38Z
https://ibb.co/Sf5Ydz4
 

RodroX

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Looks to me the fans are installed the correct way!!!
well, that's fantastic I guess aha!

This are the cinebench scores:

This one is without any config
https://ibb.co/Jr5TDQM

Score: 6900

With Tweaks on master ryzen ( voltage stuck on 1.2v )
https://ibb.co/VDtknRL

Score 7100


It seems its pulling much power on everything without any config and lower clocks?

EDIT: I see on HWinfo the voltages are not necessarily stuck at 1.2v they jump to 1.0 1.1
So it is not fully fixed?
 
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madmatt30

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well, that's fantastic I guess aha!

This are the cinebench scores:

This one is without any config
https://ibb.co/Jr5TDQM

Score: 6900

With Tweaks on master ryzen ( voltage stuck on 1.2v )
https://ibb.co/VDtknRL

Score 7100


It seems its pulling much power on everything without any config and lower clocks?

EDIT: I see on HWinfo the voltages are not necessarily stuck at 1.2v they jump to 1.0 1.1
So it is not fully fixed?

Its a weird result, you're getting higher clocks at less voltage than at stock but a worse overall muti core score.

It doesn't make a lot of sense really.

On another note I checked the hummer fan specs out, the gp12s push 50% more airflow with pretty much the same noise output so they're a good upgrade intake fan wise.
 
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Its a weird result, you're getting higher clocks at less voltage than at stock but a worse overall muti core score.

It doesn't make a lot of sense really.
I as well on tweaking set it to 4050 as max maybe its the cause on full load?.
I noticed has i said on a reply that in hwinfo I see the voltage jumping around 1.0-1.2 but not passing that treshhold. ( with ryzen master tweaking ofcourse) without the tweaks e see the usual bounces of 1.0-1.4 and the idle temp around 55º opposed to the 40º idle.

SO I am confused aswell ahaha!
 

Phaaze88

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Its a weird result, you're getting higher clocks at less voltage than at stock but a worse overall muti core score.

It doesn't make a lot of sense really.
We can't see the whole picture with a screenshot, but I think it does make sense.
They got higher clocks, yes, but the undervolt is too much, so the higher clocks don't hold. I'd imagine the stock settings are incurring smaller drops in frequency across the board compared to the manual settings.
 

madmatt30

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I as well on tweaking set it to 4050 as max maybe its the cause on full load?.
I noticed has i said on a reply that in hwinfo I see the voltage jumping around 1.0-1.2 but not passing that treshhold. ( with ryzen master tweaking ofcourse) without the tweaks e see the usual bounces of 1.0-1.4 and the idle temp around 55º opposed to the 40º idle.

SO I am confused aswell ahaha!

As said before the voltage and temp spikes on ryzen at low loads are absolutely normal, these cpu's have habits that have nothing in common with any cpu's released previously.

It panics people who have come from older systems but it shouldn't, it's absolutely normal.

Thatbsaid I'm a mad tweaker myself, I refuse to run anything at 'stock' and always have done.
 
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We can't see the whole picture with a screenshot, but I think it does make sense.
They got higher clocks, yes, but the undervolt is too much, so the higher clocks don't hold. I'd imagine the stock settings are incurring smaller drops in frequency across the board compared to the manual settings.
What about all those red circles without the tweaks? Can I leave it atleast this week with the tweaks and at the weekend change the termal paste along with the extra fan?

And probably reset the Bios again, the only thing I have there is set the ram to 2133mhz nothing more ( something about DCOP profile?)
 
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As said before the voltage and temp spikes on ryzen at low loads are absolutely normal, these cpu's have habits that have nothing in common with any cpu's released previously.

It panics people who have come from older systems but it shouldn't, it's absolutely normal.

Thatbsaid I'm a mad tweaker myself, I refuse to run anything at 'stock' and always have done.
So can I keep the tweaks maybe? Il test with extra fan and thermals reapplied as well on weekend.

I am just not happy with the 1.4 volts on idle and so much reading probably did more bad then good on my head
 

Phaaze88

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Those red circles for PPT, Power, TDC, and EDC are nothing harmful. It shows that when it hits that particular limit.
SOC and Temperature in the red would be harmful though.

The word needs to spread around: these cpus can tune themselves better than the user can. Literally nothing needs to be done to them by the user, save for aftermarket cooling and dual channel ram, up to 3733mhz, CL16/17.
YOU aren't comfortable with 1.4v running temporarily though 2-3 threads, but it is. It does not draw nearly as much voltage if it's got like 5 or more threads active.
YOU aren't comfortable with 80C thermals, but it is. I've seen so many threads bring up this number, that it must be true; this is the cpu's comfort zone.
At that point, who knows best: you, or the cpu?
 
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Those red circles for PPT, Power, TDC, and EDC are nothing harmful. It shows that when it hits that particular limit.
SOC and Temperature in the red would be harmful though.

The word needs to spread around: these cpus can tune themselves better than the user can. Literally nothing needs to be done to them by the user, save for aftermarket cooling and dual channel ram, up to 3733mhz, CL16/17.
YOU aren't comfortable with 1.4v running temporarily though 2-3 threads, but it is. It does not draw nearly as much voltage if it's got like 5 or more threads active.
YOU aren't comfortable with 80C thermals, but it is. I've seen so many threads bring up this number, that it must be true; this is the cpu's comfort zone.
At that point, who knows best: you, or the cpu?
Well the cpu knows best for sure, il just get the 3 new fans and re-apply thermal paste for now. ( 2 new at front and 1 new at top ) maybe it will change the thermals ( hope so.. )

But I just bought the dark rock 4 because of the case compatibility of the case :C!

yeh the soc and temperature never gets to red anyway just the other ones.

but what about reaching the 7100 cinebench scores? guess the 100 points would not make much of a difference
 

Phaaze88

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Well the cpu knows best for sure, il just get the 3 new fans and re-apply thermal paste for now. ( 2 new at front and 1 new at top ) maybe it will change the thermals ( hope so.. )
It should - if the cpu doesn't try to boost higher as a result! LOL!

but what about reaching the 7100 cinebench scores? guess the 100 points would not make much of a difference
Not really, no.
 
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It should - if the cpu doesn't try to boost higher as a result! LOL!


Not really, no.
Dont' give me more problems to think about ahahah!
Anyway thanks for all the help I will eventually update the results when i get the job done here.

Good week for everyone who helped around here.
Reall life saviours!
 

beorn

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I just built a 3900x system last week, MSI X570 mobo, 32 GB 3200mhz RAM, 2060 Nvidia rtx, 2x 1 TB SSDs. I tinkered around with voltages and think I finally found the sweet spot of performance and stability with a negative 0.1000v offset in bios. I have air cooling too
Noctua NH-U12S SE-AM4

and my temps are relatively low, idles in low-mid 30s, maxes out at 76 C after 10 hours run of Prime 95. Cinebench R20 multicore score around 7300
 
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I just built a 3900x system last week, 32 GB 3200mhz RAM, 2060 Nvidia rtx, 2x 1 TB SSDs. I tinkered around with voltages and think I finally found the sweet spot of performance and stability with a negative 0.1000v offset in bios. I have less high end air cooling than yours but my temps are relatively low, idles in low-mid 30s, maxes out at 76 C after 10 hours run of Prime 95. Cinebench multicore score around 7300
what motherboard?

Those are awesome temps..I just purchased 3 new fans, currently playing a 1.2v and 4050 Clock and temps don't pass 50º ( playing league) temps go to 76 77º on rendering.

il try that offset -0,1, what clock speed you running?
 
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MSI X570 Gaming Plus. I'm just running the default clock speeds. Seems to average around 4.1
oh that cooler is way better then dark rock 4 i reckon yeh guess my clocks runs at 3.9 at stock don't know why, guess I have alot of testing to do :) thanks alot for your valuable input!


how did you apply your thermal paste if I can ask :)?
 
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