• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

3-Pin fan header question

Hauk

Platinum Member
If using one of these 3-Pin Fan Power Y Cables on a mobo header, do both outputs receive the same voltage? With a good quality mobo are there any issues with this? Plan on running two VGA fans at about 70%..

 
The fans would be placed in parallel, so yes they will see the same voltage.

However, there are no guarantees that your motherboard will be able to deliver enough current to drive both fans. The voltage could sag (so that the two fans would not see the same voltage that a single fan would), or the motherboard could detect an overcurrent situation and do something about it (potentially refusing to boot, or just not turning the fans on at all).

Your video card(s) doesn't have a fan header?
 
It also cuts the resistance of each fan in half so actually they could pull more current than the fan header is rated for correct?
 
Back
Top