Do CLCs adjust fan/pump speed based on CPU or coolant temp ?

cucker tarlson · Jan 12, 2020

What is the best way to get rid of those short CPU fan bursts but still be able to have your CPU cooling spin faster/slower depending on the temperature ? Just in a less aggresive way.
Let's say the PC is running just the browser and some basic apps,sitting at 30 degrees.When I launch some other software the cpu usage goes to +70% for a while and then drops.The fan spins up and then slows down again.
Same as while playing,for example Odyssey.You're running around and turn into the densely populated area,the usage spikes again,the fan spins up,then you leave the area,the fan spins down.

Shouldn't a cooler that regulates the pwm based on coolant temp better absorb those sudden temperature spikes ?

Setting the fans to silent mode does not solve it,I still want them to run in performance mode,just when I really need them (longer high load) not for short high loads.

gdallsk · Jan 12, 2020

It depends on the cooler, pretty much all of them keep the pump speed constant, as there is no need to change it.
for the fans though, it depends where you have them plugged in, for example, corsair AIO's have an option in their software to either control fan speed as the coolant temp grows, or the the CPU itself, so it's up to you how you want to set them up. When I had my H100i I had a custom curve set up, so that the fans would spin up when CPU temps went up, but I wouldn't allow them to spin up to 100%

oxrufiioxo · Jan 12, 2020

I have mine synced with my gpu but I use icue. If that isn't an option doing it based on cpu coolant and setting up your own fan curve is the most ideal.

Tatty_One · Jan 12, 2020

I have my Motherboards "Smartfan" in the Bios control my AIO fans on PWM, works a treat, keeps the CPU cool and the fans are quiet, I must admit though in the past dependant on motherboard it has occasionally been hit and miss but my last 3 boards have all done the job well.

cucker tarlson · Jan 12, 2020

Frankly I hate pretty much everything about CLCs but the fact they run on liquid is potentially a great solution for those short PWM spikes.
the coolant temp won't go up so steeply for short cpu temp spikes.

I first thought of this while watching a video on how clc testing procedure should include a warm-up time for the coolant to be objective

Zach_01 · Jan 12, 2020

For water cooled systems yes, the fan curve setup on the coolant is the way to go to avoid rpm spikes as possible
This may be variable depending the TIM used. High transfer heat rate TIM can and will produce some mild rpm spikes but not like air coolers.

For air coolers this is done by incerting a large delta/hysterisis for the fan curve but its not as good as water temp based curves. High rpm spikes still exist.

oxrufiioxo · Jan 12, 2020

cucker tarlson said:
Frankly I hate pretty much everything about CLCs but the fact they run on liquid is potentially a great solution for those short PWM spikes.
the coolant temp won't go up so steeply for short cpu temp spikes.

I first thought of this while watching a video on how clc testing procedure should include a warm-up time for the coolant to be objective

I agree for Rendering/heavy cpu usage apps but for gaming the coolant temp barely goes up its the reason I sync my fans with my gpu if not they will max at 600rpm. On smaller 240mm coolers this may not be the case though..... My biggest gripe with cooler testing in general is it's done on an open test bench which means results are nearly useless.

cucker tarlson · Jan 12, 2020

thanks for all the answers
if I get this

Corsair Hydro Series H115i Platinum (CW-9060038-WW) w Morele.net

Chłodzenie wodne Corsair Hydro Series H115i Platinum (CW-9060038-WW)... - Szukasz tego produktu? Sprawdź - najczęściej to właśnie Morele.net ma najniższą cenę w Polsce.

www.morele.net

can I set a custom fan curve for the coolant temps ?

Zach_01 · Jan 12, 2020

oxrufiioxo said:
I agree for Rendering/heavy cpu usage apps but for gaming the coolant temp barely goes up its the reason I sync my fans with my gpu if not they will max at 600rpm. On smaller 240mm coolers this may not be the case though..... My biggest gripe with cooler testing in general is it's done on an open test bench which means results are nearly useless.

Yes this is true... Typically in a case the CPU cooling radiator is participating to the case's cooling (front intake or top exhaust). Setting the curve to GPU makes sense, but only in gaming scenarios. When running CPU intensive loads tho, without the participation of the GPU could be an issue...

cucker tarlson said:
thanks for all the answers
if I get this

Corsair Hydro Series H115i Platinum (CW-9060038-WW) w Morele.net

Chłodzenie wodne Corsair Hydro Series H115i Platinum (CW-9060038-WW)... - Szukasz tego produktu? Sprawdź - najczęściej to właśnie Morele.net ma najniższą cenę w Polsce.

www.morele.net

can I set a custom fan curve for the coolant temps ?

As many as you like...

cucker tarlson · Jan 12, 2020

what the other option under sensor ? cpu temp ?

oxrufiioxo · Jan 12, 2020

cucker tarlson said:
what the other option under sensor ? cpu temp ?

Pretty much everything you can even set it your your DDR4 temps, every motherboard temp, gpu, every single cpu core, and coolant.

Zach_01 said:
Yes this is true... Typically in a case the CPU cooling radiator is participating to the case's cooling (front intake or top exhaust). Setting the curve to GPU makes sense, but only in gaming scenarios. When running CPU intensive loads tho, without the participation of the GPU could be an issue...

As many as you like...

View attachment 142051

I typically set it to a fixed 1500rpm for cpu intensive stuff.

cucker tarlson said:
thanks for all the answers
if I get this

Corsair Hydro Series H115i Platinum (CW-9060038-WW) w Morele.net

Chłodzenie wodne Corsair Hydro Series H115i Platinum (CW-9060038-WW)... - Szukasz tego produktu? Sprawdź - najczęściej to właśnie Morele.net ma najniższą cenę w Polsce.

www.morele.net

can I set a custom fan curve for the coolant temps ?

They have a blacked out version of this coming out without the RGB fans for cheaper @cucker tarlson

iCUE H115i RGB PRO XT Liquid CPU Cooler

The CORSAIR iCUE H115i RGB PRO XT is an all-in-one liquid CPU cooler built for both low noise operation and extreme CPU cooling, with a 280mm radiator, two CORSAIR ML140 PWM fans, and 16 RGB LEDs. Compatible with CORSAIR iCUE

www.corsair.com

Zach_01 · Jan 12, 2020

cucker tarlson said:
what the other option under sensor ? cpu temp ?

Yes its an option
In that dropdown menu there are all motherboard temps (but without names, just #1,#2,#3...) including CPU. Its the same order as HWiNFO see it.

Other than that its whatever the system report as @oxrufiioxo says.

cucker tarlson · Jan 12, 2020

what pump design does the 115i use ? asetek ?

oxrufiioxo · Jan 12, 2020

cucker tarlson said:
what pump design does the 115i use ? asetek ?

The Pro uses an Asetek the Platinum uses Coolit.... I'm not currently sure about the XT.

cucker tarlson · Jan 12, 2020

which one is better ?

oxrufiioxo · Jan 12, 2020

cucker tarlson said:
which one is better ?

I think in general the Platinum outperforms the Pro but because of the fans not the pump..
The Pro fans max out at 1200rpm vs 2000rpm on the Platinum. I'm betting with the same fans they would be nearly identical.

EarthDog · Jan 12, 2020

TL DR

I don't play games... all my fans are on silent. The difference fans make from silent to ramped up isnt the difference of hitting TJmax or remotely worrisome temps in my case. I'll hit 90c(max) during stress tests, but less than 60c gaming... why spend the time? Silent all the way.

cucker tarlson · Jan 12, 2020

EarthDog said:
TLR

I don't play games... all my fans are on silent. The difference fans make from silent to ramped up isnt the difference of hitting TJmax or remotely worrisome tempscincmy case. I'll hit 90c(max) during stress tests, but less than 60c gaming... why spend the time? Silent all the way.

ok boomer

I still want good performance when I'm playing,my oc tends to cause stability problems when temps go too high.

EarthDog · Jan 12, 2020

cucker tarlson said:
ok boomer

I still want good performance when I'm playing,my oc tends to cause stability problems when temps go too high.

Lol...

I get good performance. I run a damn 16c/32t cpu at 4.4 ghz in this manner.

cucker tarlson · Jan 12, 2020

EarthDog said:
Lol...

I get good performance. I run a damn 16c/32t cpu at 4.4 ghz in this manner.

ok

sneekypeet · Jan 12, 2020

TBH I just set the pump to run full speed, as you typically cannot hear them unless your head is in the case. Then set a fan curve, where I just run fans silent like ED mentioned.

xkm1948 · Jan 12, 2020

CLC just set everything according to water temp in the loop and you should be fine

Chloe Price · Jan 12, 2020

The only "premium" AIO I've had was the OG Corsair H100i and IIRC it had that possibility. All other AIOs which I've had have been generic Asetek ones and I've simply ran them at full speed, maybe I've been lucky but none had annoying pump noise at all.

I'd run by the coolant temp, since quick changes of CPU temps just ramps it lower and higher and IMO that's hella annoying, at least in fans.

EarthDog · Monday at 12:09 AM

sneekypeet said:
TBH I just set the pump to run full speed, as you typically cannot hear them unless your head is in the case. Then set a fan curve, where I just run fans silent like ED mentioned.

...and I dont even need to run the pump at full tilt either.. set to 1.5 gpm flow. After that is diminishing returns anyway (why more noise amd little heat dumping the loop is my thought). Even dumping 300w load through 3x120mm rad, all my settings are static. Running another 100 mhz isnt worth it to me for this ubiquitous silence.

But you should be able to set both the pump and fans at a static level without issue. Some software has hysterisis settings too. But if you dont want the yoyo effect, set it to the water like chloe said or go static. Easy breezy.

newtekie1 · Monday at 3:39 AM

This is one of the reasons I connect the fans to my motherboard instead of the CLC. Then I use the options in my motherboard to limit how fast the fan can change speed. All the motherboard I use have the option to wait 10 seconds inbetween changing fans speed, this greatly reduces noticeable fan spikes.

System Name	skurwiel szatan
Processor	i7 5775c @4.3GHz/1.385v/EDRAM @2GHz
Motherboard	Z97X Gaming 5
Cooling	Noctua D15S
Memory	Crucial Ballistix Tactical LP 1600 CL8 @2133 9-9-9-27 1T
Video Card(s)	RTX 2070 Super Gaming X Trio
Storage	SU900 128 (OS)/850 PRO 256+256+ 512,860 EVO 500,XPG SX950U 480,M9Pe(Y) 512 (games)/4TB HDDs (3+1)
Display(s)	Acer XB241YU+Dell S2716DG dual monitor setup
Case	Full tower
Audio Device(s)	W830BT headphones
Power Supply	Superflower Leadex Gold 850W
Mouse	G903 lightspeed+powerplay,G403 wireless + Steelseries DeX + Roccat rest
Keyboard	HyperX Alloy SilverSpeed (w.HyperX wrist rest),Razer Deathstalker
Software	Windows 10
Benchmark Scores	A LOT

System Name	Main/Backup/HTPC
Processor	9900K@4.7/X5650@4.0/i3 4360@3.7
Motherboard	Gigabyte Z390 Aorus Pro WiFi/Asus P6TD Deluxe/MSI H81I
Cooling	Custom water/Coolermaster TPC-800/Antec C40
Memory	HyperX Predator 2x8GB 3200MHz/Corsair Vengeance 9GB/Crucial Balistix Tactical 8GB
Video Card(s)	MSI Ventus RTX 2080 Super /GTX 970/Intel HD4600
Storage	Samsung 960 EVO 250GB/840 EVO 120GB/OCZ ARC 100 120 GB
Display(s)	Acer Z301c/39" Panasonic HDTV
Case	Fractal Design Arc XL/Aerocool Aero-500/Thermaltake Core V1
Audio Device(s)	Yamaha RX-V379/Realtek/ Intel HD Audio
Power Supply	Corsair RM850/ Corsair TX650/350W OEM
Mouse	Logitech G900
Keyboard	Logitech G610 Orion Red
Software	Win 10 Pro 64Bit

System Name	His & Hers
Processor	i9 9900k @5ghz/ R9 3900X Stock
Motherboard	Asus Maximus XI Code/ X570 Aorus Master
Cooling	Corsair h150i Pro Push/Pull. 5x Corsair ML120 + 4x Corsair LL120/ Corsair h115i Platinum
Memory	32 GB 4x8GB 3600mhz Corsair RGB Pro/ 32 GB 3200 CL14 @3800 CL16
Video Card(s)	Asus ROG Strix 2080 ti/ Titan XP
Storage	lots of SSD.
Display(s)	Asus ROG PG278QR / MSI 27 inch VA panel.
Case	Corsair 500D SE RGB/ Phanteks Evolv X
Audio Device(s)	Arctis Pro + gaming Dac/ Corsair sp 2500/ Logitech Z 625
Power Supply	Seasonic Ultra Prime Titanium 850w x2
Mouse	Logitech G903 Lightspeed/ Logitech G Pro Hero.
Keyboard	Corsair K95 RGB Platinum/ Logitech G Pro

System Name	The Grey
Processor	Skylake i7 6700k @ 4.6gig - 1.35V
Motherboard	MSI Z170A Tomahawk
Cooling	Cooler Master Seidon 240V AIO/Viper140's
Memory	16GB Corsair Vengeance LPX3000 @ 3200mhz CL15 1T
Video Card(s)	Palit 8GB GTX 1070 GameRock OC Edition
Storage	SkHynix SL308 120GB/CrucialM4 64GB/1TB WD Black
Display(s)	LG 29inch 2560x1080 Curved Ultrawide IPS
Case	Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s)	SB Xifi Elite Pro 7.1through VideoLogic ZXR550's
Power Supply	XFX Pro Black Edition 750W Gold modular
Mouse	Coolermaster Storm Octane wired
Keyboard	Element Gaming Carbon Mk2 Tournament Mech
Software	Win 10 Home x64

System Name	skurwiel szatan
Processor	i7 5775c @4.3GHz/1.385v/EDRAM @2GHz
Motherboard	Z97X Gaming 5
Cooling	Noctua D15S
Memory	Crucial Ballistix Tactical LP 1600 CL8 @2133 9-9-9-27 1T
Video Card(s)	RTX 2070 Super Gaming X Trio
Storage	SU900 128 (OS)/850 PRO 256+256+ 512,860 EVO 500,XPG SX950U 480,M9Pe(Y) 512 (games)/4TB HDDs (3+1)
Display(s)	Acer XB241YU+Dell S2716DG dual monitor setup
Case	Full tower
Audio Device(s)	W830BT headphones
Power Supply	Superflower Leadex Gold 850W
Mouse	G903 lightspeed+powerplay,G403 wireless + Steelseries DeX + Roccat rest
Keyboard	HyperX Alloy SilverSpeed (w.HyperX wrist rest),Razer Deathstalker
Software	Windows 10
Benchmark Scores	A LOT

Do CLCs adjust fan/pump speed based on CPU or coolant temp ?

cucker tarlson

gdallsk

oxrufiioxo

Tatty_One

Senior Moder@tor

cucker tarlson

Zach_01

oxrufiioxo

cucker tarlson

Corsair Hydro Series H115i Platinum (CW-9060038-WW) w Morele.net

Zach_01

Corsair Hydro Series H115i Platinum (CW-9060038-WW) w Morele.net

cucker tarlson

oxrufiioxo

Corsair Hydro Series H115i Platinum (CW-9060038-WW) w Morele.net

iCUE H115i RGB PRO XT Liquid CPU Cooler

Zach_01

cucker tarlson

oxrufiioxo

cucker tarlson

oxrufiioxo

EarthDog

cucker tarlson

EarthDog

cucker tarlson

sneekypeet

Super Moderator

xkm1948

Chloe Price

EarthDog

newtekie1

Semi-Retired Folder

System Name	None
Processor	Ryzen 5 3600 (PBO manual: PPT 95W, TDC 60A, EDC 63A, Scalar X2)
Motherboard	Gigabyte X570 Aorus Pro
Cooling	Corsair H110i 280mm (Liquid metal for TIM)
Memory	CorsairVengeanceLPX DDR4 2x8GB 3466MHz CL16-18-18-36 1T, cheap B-die, @3600 CL16-16-16-32 1T (1:1:1)
Video Card(s)	ASUS ROG Strix RX580 OC 8GB
Storage	Samsung NVMe 970Pro 512GB / SATA-III 850Pro 1TB SSD
Display(s)	24" EIZO FlexScan S2411W 1920x1200, 16:10 60Hz samsung S-PVA panel.
Case	None
Audio Device(s)	Sound Blaster Z <--optical link--> Logitech Z5500 5.1 500W
Power Supply	Corsair HX750i 93% eff
Mouse	Logitech MX Master
Keyboard	Logitech G15 v2
Software	Windows 10 Home 64bit (v1909)

System Name	His
Processor	Intel i9 7920X
Motherboard	Asus Prime X299 Deluxe
Cooling	Corsair H115i RGB Platinum
Memory	G.Skill TridentZ RGB 32GB @ 3600MHz
Video Card(s)	nVidia RTX 2080ti
Storage	Samsung 960 Pro / Crucial MX300 750GB / Seagate 1TB Spinner
Display(s)	Samsung 55" 4K 60hz
Case	Cooler Master Cosmos C700P (Inverted Layout)
Audio Device(s)	Realtek on board > Sony Receiver > Cerwin Vega's
Power Supply	Thermaltake TPSG 1050W
Mouse	Always Changing
Keyboard	Always Changing
Software	Windows 10 Pro 64

System Name	Virtual Reality / Bioinformatics
Processor	Undead CPU
Motherboard	Undead TUF X99
Cooling	Noctua NH-D15
Memory	GSkill 128GB DDR4-3000
Video Card(s)	EVGA 2080Ti
Storage	Samsung 960 Pro 1TB + 860 EVO 2TB + WD Black 5TB
Display(s)	Acer K272HUL, HTC Vive
Case	Fractal Design R5
Audio Device(s)	BOSE 2.0
Power Supply	Seasonic 850watt
Mouse	Logitech Master MX
Keyboard	Corsair K70 Cherry MX Blue
Software	Windows 10 Professional/Linux Mint

System Name	Classified
Processor	AMD Ryzen 5 2600 @ 4.025GHz
Motherboard	Asus TUF B450 Plus Gaming
Cooling	Custom loop by Alphacool
Memory	G.Skill Value 16GB DDR4-2400
Video Card(s)	EVGA GeForce GTX 980 Ti FTW
Storage	2x256GB, 240GB & 2x 480GB SSDs, 2TB HDD
Display(s)	2x 1920x1080 (23" & 22")
Case	Corsair Carbide Air 740
Audio Device(s)	Sound Blaster Z
Power Supply	Seasonic Focus+ Gold 750W
Mouse	Logitech G400s
Keyboard	Dell keyboard
Software	Windows 10 Pro
Benchmark Scores	6040 in Time Spy, 15731 in Fire Strike with GTX 980 Ti

Processor	Intel Core i7 9900K@5.0GHz
Motherboard	AsRock Z370 Taichi
Cooling	Corsair H115i Pro w/ Noctua NF-A14 Fans
Memory	32GB Corsair DDR4-3000
Video Card(s)	ASUS Strix GTX 1080Ti
Storage	500GB SX8200 Pro + 8TB with 1TB SSD Cache
Display(s)	QNIX QX2710 1440p@120Hz
Case	Fractal Design Define S
Audio Device(s)	Onboard is good enough for me
Power Supply	eVGA SuperNOVA 1000w G3
Software	Windows 10 Pro x64