Fan curve for Ryzen 3600

michty_me · 2 Mar 2020 at 22:56

Evening all!
I've just finished shoving the following items into a Lancool II case from an old system

Ryzen 3600
X570 Asus Strix E
32GB crucial ballistic RAM
Vega 56 Sapphire Pulse
BeQuiet dark rock pro 4
3 X arctic cooling p12 at the front for intake.
2 X arctic cooling p12 on the bottom for intake.
2 X AC p12 on the roof for extract.
1 X AC p12 on the rear for extract.

Im looking to control the fans better and never done any custom fan curves for a PC before.

Ryzen seems to ramp up fans a bit more often so looking to find a good setup where it will remain fairly quiet until I hit so gaming.

LuckyBenski · 3 Mar 2020 at 10:26

That sounds like a huge amount of fans. 5 intake and 3 exhaust? I would suggest drop that to 3 in and maybe 1 out, should be plenty. The DRP4 is a hefty cooler so should perform well.

My approach to fan curves is to find the highest speed I'll tolerate at idle (usually just below audible) to help keep temperatures low before the system is under load.

Set that as a flat line up to initial load temperatures - maybe 40-45°. Then a smooth but shallow line from there to 60-65°. Then a steeper ramp leading to the max temp you'll accept e.g. 100% fan speed at 80°.

The bequiet cooler might have fairly slow fans though so speeds might need to be a little higher/ramp steeper.

doyll · 3 Mar 2020 at 16:46

What LuckyBenski said.
But I would unplug top& back fans and remove all PCIe back slot covers in increae rear vent area and thus give case better front to back airflow. Top exhaut fans pull cool air coming from front intakes up and out which also pulls heated exhaust off of GPU up where it mixes with and goes into CPU cooler. I'm guessing temps will be better with lower fan speeds and less noise.

michty_me · 3 Mar 2020 at 18:07

Ok so look at removing fans then first then I'll try and set similar to what LuckyBenski mentioned with the temperatures. Makes sense with regards to the top fans.

EsaT · 3 Mar 2020 at 18:23

For simplifying controlling fans would also suggest getting splitters, so that you can connect front intake fans to one header on mobo.
After all they're there for doing exactly same job and having to do multiple control curves for separate fan "channels" is unnecessary complexity and work.

LuckyBenski said:
That sounds like a huge amount of fans. 5 intake and 3 exhaust? I would suggest drop that to 3 in and maybe 1 out, should be plenty. The DRP4 is a hefty cooler so should perform well.

At least those fans didn't cost arm and leg, unlike very expensive mobo and cooler for starting level CPU.

doyll · 3 Mar 2020 at 18:25

Actually I set my cooler fan idle speed at about 600rpm with temps up to about 35-40c. Depends on CPU.
Then fans go to about 800rpm up to about 50c.
Then 900rpm up to about 60c.
Then 1000rpm up to about 65c.
Then 1200-1300 up to about 70c (depends on what fan max speed is).
Above that full speed.
Case fans are similar. Key is for case fans to always be moving more cool air into case than components are using so their heated exhaust is pushed out of case without mixing with cool intake air going to components. Cooler air means lower temps and noise levels.
Basically that keeps system inaudible unless I've got CPU and GPU under extremely heavy load.

michty_me · 3 Mar 2020 at 19:25

EsaT said:
For simplifying controlling fans would also suggest getting splitters, so that you can connect front intake fans to one header on mobo.
After all they're there for doing exactly same job and having to do multiple control curves for separate fan "channels" is unnecessary complexity and work.

At least those fans didn't cost arm and leg, unlike very expensive mobo and cooler for starting level CPU.

Yes, Each set of fans are on their own header so should be simple enough to do.
Reason for the 'very expensive motherboard and cooler' Reason for that is for dropping in a higher core CPU down the line. I wanted a solid board so it gave me more options in the future. The cooler was £50

doyll said:
Actually I set my cooler fan idle speed at about 600rpm with temps up to about 35-40c. Depends on CPU.
Then fans go to about 800rpm up to about 50c.
Then 900rpm up to about 60c.
Then 1000rpm up to about 65c.
Then 1200-1300 up to about 70c (depends on what fan max speed is).
Above that full speed.
Case fans are similar. Key is for case fans to always be moving more cool air into case than components are using so their heated exhaust is pushed out of case without mixing with cool intake air going to components. Cooler air means lower temps and noise levels.
Basically that keeps system inaudible unless I've got CPU and GPU under extremely heavy load.

That sounds fairly reasonable those speeds at temperatures. I'll do some monitoring with something similar and see how it goes. Thanks!

EsaT · 3 Mar 2020 at 22:19

michty_me said:
Yes, Each set of fans are on their own header so should be simple enough to do.
Reason for the 'very expensive motherboard and cooler' Reason for that is for dropping in a higher core CPU down the line. I wanted a solid board so it gave me more options in the future. The cooler was £50

PWM PST Arctics would have built in splitters in cable.
3 pin fan connector fits into 4 pin connector, so could get "PWM ready" splitters.
https://www.overclockers.co.uk/ek-water-blocks-ek-cable-y-splitter-2-fan-pwm-10cm-wc-551-ek.html
https://www.overclockers.co.uk/ek-water-blocks-ek-cable-y-splitter-3-fan-10cm-wc-9ak-ek.html

Already proper £200 X570 boards have overkill level VRMs for stock 12/16 cores.
And while turning ship around from B450 board VRM fiasco, Asus screwed up in chipset cooler design putting it directly under graphics card to be warmed up by its heat.
(with fan also restricted by marketing excrement garbage in that particular board)
That can cause sweaty chipset temps in gaming sessions if you have high heat output graphics card there.
That's unless you have reference blower cooler graphics card.
And when summer warms up room temperatures...

michty_me · 3 Mar 2020 at 22:29

EsaT said:
PWM PST Arctics would have built in splitters in cable.
3 pin fan connector fits into 4 pin connector, so could get "PWM ready" splitters.
https://www.overclockers.co.uk/ek-water-blocks-ek-cable-y-splitter-2-fan-pwm-10cm-wc-551-ek.html
https://www.overclockers.co.uk/ek-water-blocks-ek-cable-y-splitter-3-fan-10cm-wc-9ak-ek.html

Already proper £200 X570 boards have overkill level VRMs for stock 12/16 cores.
And while turning ship around from B450 board VRM fiasco, Asus screwed up in chipset cooler design putting it directly under graphics card to be warmed up by its heat.
(with fan also restricted by marketing excrement garbage in that particular board)
That can cause sweaty chipset temps in gaming sessions if you have high heat output graphics card there.
That's unless you have reference blower cooler graphics card.
And when summer warms up room temperatures...

Yeah all the fans I have daisy chain off each other and plugged into the correct header on the board.

With regards to the motherboard, I've not noticed any high temps on the chipset so not much of a concern for me at the minute. I'll keep an eye on it though.