Hi All,
I got a budget PC case for a friend (1st Player DK D4) and it comes with 4 pretty nice RGB fans but they use molex connectors. I thought it wouldn't be an issue as I can daisy chain them and run them at 7V if they were too loud.
Now let me tell you, at 12V, they are monstrously loud! There's no way I can give this to my friend in good conscience as things stand so I modded all of them to 7V by switching one of the ground wires to the 5V rail so that it runs the difference between 12V and 5V = 7V.
I've got a Gigabyte P650B PSU which I believe is a pretty decent PSU and I'm testing it with my B450 motherboard, Ryzen 5 3600 and a GTX 1070. I read online that some PSUs might not like something running on 7V with no other load on the line so I tried plugging in a HDD and SSD but it still fails to turn on with all 4 fans on 7V.
I've noticed if I only have 1 fan connected via the 7V fan mod, then it will boot fine and I can plug in the remaining 3 after booting but obviously this is a massive hassle.
Can anyone help? As we're on a budget we don't want to buy a new PSU or new RGB fans as they're quite pricey. I can try other mods though.
Thanks in advance!


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