how do you over-volt a fan?

tomos · 14 Oct 2006 at 17:15

i have just got a thermaltake armorcase and it has a 250mm fan in the case side panel/window.

i've tried it but it doesnt seem to push that much air and want to try to increase it if poss. i have heard of people making fans go faster but would like to know how to do it

james.miller · 14 Oct 2006 at 17:17

http://www.overclockers.com/tips808/
Dun Dun Duuuunnn.

disclaimer: you do this at your own risk. It aint ma fault buddy :cool:

tomos · 14 Oct 2006 at 17:30

that site seems to hvae probs, but thank god for googles cache :cool:

24v?

i was thinking 12v + 5v maybe

Tip: You can get 17V from an AT power supply! Connect the yellow wire from the cooler to the yellow wire on the AT connector, and the black wire from the cooler to the white wire connector. This should give you 17V!

Now, how does this work with an ATX connector? Just the same way as with the AT connector. The wires are the same colour, and you won't get into trouble finding them.

my problem is, there is no white connector on my cabling. i have red/yellow and 2xblack.

MikeTimbers · 14 Oct 2006 at 18:44

You can get -5v from the ATX connector to the motherboard (and also -12v if you insist!)

The $6m Dan · 14 Oct 2006 at 18:57

I believe it's saying that you need to connect the fan up to the ATX connector (20 pins) where as I think you looking at a molex connector (4 pins).

If I've understood the article correctly you need to connect your fan up like that. With the yellow line being the cable from your fan that previously connects to the yellow fan on the molex, and the black line is the cable from the fan that previously connected to the black cable on the molex connector.

However, this is just my interpretation of that article and there are no guarantees that I'm correct. Please make sure that your happy with this explanation before you go ahead with any mods to your PSU, please don't just do it on my say so

Also if you have an ATX2 PSU the wiring may be different and the pin numbers willbe different as well.

m3csl2004 · 14 Oct 2006 at 19:23

the fans life will be reduced, however you can do it by using the negative voltages given by the psu as shown above, ie, +12v to +12 and ground to -3.3 or -5

have fun

tomos · 14 Oct 2006 at 19:24

ta lads

The $6m Dan · 15 Oct 2006 at 01:21

Good luck and let us know how it goes

I'm intrigued by those large side fans so if you have time I'd appreciate some info on how your system compares to your old case and how the overvolt works out.

Cheers
Dan