PWM fan

[Big Frank]

Am I right in thinking that if I get a PWM fan and use a 4 pin fan header to molex converter cable to plug it directly into the PSU that it will not run constantly at full speed?

 

[andy_mk3]

Correct yes.

Edit: Didn't read OP properly;

It will work, and run at full speed constantly.

 

[smogsy]

Am I right in thinking that if I get a PWM fan and use a 4 pin fan header to molex converter cable to plug it directly into the PSU that it will not run constantly at full speed?

it would run at constant speed. theirs no PWM in the PSU

 

[lee32uk]

Why would you need to use a pwm to molex if you have a spare fan header ?

If you don't have a spare fan header then you can buy a splitter cable.

 

[Big Frank]

Why would you need to use a pwm to molex if you have a spare fan header ?

If you don't have a spare fan header then you can buy a splitter cable.

I have 1 spare fan header but want to plug in at least 2 additional fans.

I was thinking about when I've used all the fan headers with splitter cables.

I only want 2 fans per header max just incase they burn the header out.

 

[lee32uk]

I have 1 spare fan header but want to plug in at least 2 additional fans.

I was thinking about when I've used all the fan headers with splitter cables.

I only want 2 fans per header max just incase they burn the header out.

I doubt you will have any issues using standard case fans. I think most fan headers are rated around 1A. A standard case fan will be well below that figure (Maybe around 0.18A or less).

This cable can do 3 PWM fans off a single header.


My basket at Overclockers UK:

• 1 x EK Water Blocks EK-Cable Y-Splitter 3-Fan PWM (10cm)= £2.99

Total: £5.27 (includes shipping: £2.28)​

​

 

[Big Frank]

I'm looking at 120-140mm led fans so they could take .30A or .40A depending on the individual fan itself I didn't want to get too close to reaching 1A