Controling fan speeds

Dirk76

Dirk76

Dirk76

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Is the pump (for the rads) connected directly to a motherboard header? Asking because if you say you just click on something and the fans get very loud then the pump may not be working?

Are all the fans in the case (on rad or otherwise) PWM (4-pin) or DC (3-pin)?

Basically, the PWM hub (fan management module on that case) will control all the fans synched to it based on CPU temp. But it doesn't seem like everything is as it should be. You could ignore the PWM hub and plug all fans into motherboard fan headers. Which is what I'd personally do. And then set up fan RPM profiles for each header.
 
pump is connected via the 4 pin module. like a old hard drive.
Pump working fine. I have a inline temp and l/p lcd guage.
The case connects via a 4 pin to cpu header. But then only has 3 pins to fans. ( but I have a 4 pin fans)
How many fans can I connect to the mother board cpu header? what is the load on them.
 
Good to know the pump is working.

I searched for Z270 Gaming and it came up with lots of different boards called "Z270 Gaming this and that". Which one is it exactly?

Anyway, find out how many fan headers the motherboard has. Each header will typically provide 0.83 amps/10 watts and you can usually add 3 fans safely (if regular fans and not special like Noctua Industrial or other high-powered fans) and sometimes more if very low amperage fans. Maybe you can find the amperage for your fans and calculate more precisely.

These splitters are good as long as you don't mix 4-pin and 3-pin fans on the same splitter: https://www.overclockers.co.uk/ek-water-blocks-ek-cable-y-splitter-3-fan-pwm-10cm-wc-9ak-ek.html
 
I have the ga-z270x gaming 5

I have the bequiet hi speed PWM fans

I thought only 1 fan per head.
Also I have been searching but I cannot find it. Can you access the bios in win 10?

in the manual it has 4 fan headers ( but each is different )
 
Dirk76 said:
I have the ga-z270x gaming 5

I have the bequiet hi speed PWM fans

I thought only 1 fan per head.
Also I have been searching but I cannot find it. Can you access the bios in win 10?

in the manual it has 4 fan headers ( but each is different )
Click to expand...

I don't believe you can access the BIOS from Windows. Closest thing to that I know about is an app like GoToBIOS that some motherboards have/had, but it actually reboots and takes you into it, doesn't stay in Windows. For Windows there should be motherboard software available from the manufacturer's website, that allows you fan control, overclocking etc. I personally avoid them and set everything through BIOS but you can give it a try.
 
If they are BeQuiet Silent Wings 3 High Speed PWM 120mm/140mm then with just 0.14 or 0.16 amps each you could have three or four on each fan header:

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The Gigabyte software for Windows is called Smart Fan 5.
 
FYI the fan controller in that case takes a PWM input and converts it to DC voltage as far as i know. So the fans are all being controlled by DC ("3-pin") voltage control.
 
What LuckyBenski said. The Phanteks PWM fan header is not a PWM fan header at all but a PWM controlled convertor to supply variable voltage to the fans plugged into it. They work well but need a custom fan curve, but then I always use a custom fan curve. ;)

If you want to PWM control your PWM fans get something like the XSPC PWM hub that powers fans from PSU and uses PWM signal from motherboard.
https://www.overclockers.co.uk/xspc-8-way-pwm-splitter-hub-sata-powered-black-v2-fg-009-xs.html
 
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The phantek one works fine, I used one for a while (before switching to an actual pwm hub on a whim).

You just need to plug the hub into the CPU header and set a custom curve in the bios that is to your liking. Works fine with PWM fans, I had around 8 fans working off it spinning up and down as required. :)

Adjust the spin up time so they ramp up gradually for a nicer experience.
 
That XSPC PWM hub would be a great solution and cleaner than using two splitters as I suggested. Long as pure PWM was desired of course.

Bit off-topic but I've been assuming that "Safety Current (A)" means the maximum current the fan can take before it goes kaput? Not the maximum current it will draw from a motherboard header? Can someone confirm which of the two, or does it mean something else? Did google but didn't find clear answers.
 
Danny75 said:
That XSPC PWM hub would be a great solution and cleaner than using two splitters as I suggested. Long as pure PWM was desired of course.

Bit off-topic but I've been assuming that "Safety Current (A)" means the maximum current the fan can take before it goes kaput? Not the maximum current it will draw from a motherboard header? Can someone confirm which of the two, or does it mean something else? Did google but didn't find clear answers.
Click to expand...
It will be the maximum current that should pass through the splitter i.e. the maximum draw of all fans added together. Current is drawn, so it's all down to the fans :)
 
LuckyBenski said:
It will be the maximum current that should pass through the splitter i.e. the maximum draw of all fans added together. Current is drawn, so it's all down to the fans :)
Click to expand...

Sorry, I should have been clearer, Lucky. I didn't mean the splitter, was referring to the Safety Current (A) for the BeQuiet fans for example, as seen in the images I posted.
 
Danny75 said:
Sorry, I should have been clearer, Lucky. I didn't mean the splitter, was referring to the Safety Current (A) for the BeQuiet fans for example, as seen in the images I posted.
Click to expand...
Sorry, realised that after I posted.

I'd suspect they mean the safe value a supply should be rated at. I doubt they draw 0.5A continuous but might well draw that on startup. So for instance while it looks like you could run 7 fans off a 1A header, they might draw over 3A on startup. So a safe limit.
 
LuckyBenski said:
Sorry, realised that after I posted.

I'd suspect they mean the safe value a supply should be rated at. I doubt they draw 0.5A continuous but might well draw that on startup. So for instance while it looks like you could run 7 fans off a 1A header, they might draw over 3A on startup. So a safe limit.
Click to expand...

You may be right. But what throws me off that line of thinking is that then it would mean 2 x BeQuiet Silent Wings 3 140mm PWM (with 0.5 Safety Current (A)) aren't really safe to run off the same motherboard header? And I have trouble thinking that could be right. On startup they could hit the limit and damage the header? Or one of them might not start up because the header fails to supply enough power or something.
 
Danny75 said:
Sorry, I should have been clearer, Lucky. I didn't mean the splitter, was referring to the Safety Current (A) for the BeQuiet fans for example, as seen in the images I posted.
Click to expand...
My guess is 'Safety current' is the maximum current fan will ever draw .. the amount of current fan motor draws when starting up or if something is holding impeller from turning. 'Safety current' is same as 'startup current' published for some fans, like Gentle Typhoon and is usually 2-4 times more power than fan uses while running.

This startup current / saftely current load is why most fan header failures when running several fans on splitters happens when system is starting up. ;)
 
Bluntwrapped said:
Voltage controlled fan controller > PWM control every day of the week.

PWM IMO sucks *****.
Click to expand...
Your above statements clearly show us how little you know. PWM control of motors has become industry standard for variable speed motors in all kinds of applications from powered hand tools to industrial applications.
 
doyll said:
Your above statements clearly show us how little you know. PWM control of motors has become industry standard for variable speed motors in all kinds of applications from powered hand tools to industrial applications.
Click to expand...

Lol I didn’t realise PWM had fanboys. While I’m fully aware of its application within various fields of industry, it doesn’t make it good for PC fan control - especially when run from a motherboard header.

Again, compared to the accuracy and predictability of static and/or voltage control, PWM sucks *****. I’d sooner run everything fixed using a 7v molex than go back to using PWM.
 
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