Help 7volt

Steve_h · 6 May 2006 at 16:52

Ok,just been sorting out my water cooling after I bought a panflo 120mm fan which I attached to my rad.
Here
http://forums.overclockers.co.uk/showthread.php?t=17571514

the problem is stupidly I bought the fan with a 3 pin conector (2 wires) and now I can't 7volt it.I am running it off this at the moment
http://www.zalman.co.kr/
on the 5 volt side but it's not spinning the fan up as fast as I would like and hence the temps are actually higher than the fan it replaced

If I could find a way to get it to 7volt things might inprove.
Any ideas please?

Sorry but the link only takes you to home page,need to follow this to get there:
Home > Product > Controller & Connectors > ZM-MC1

Indy500 · 6 May 2006 at 16:54

Use a 3-4 pin fan adapter.

Steve_h · 6 May 2006 at 17:02

Would that work as the Akasa 3-pin to 4-pin Adapter Cable (CB-007-GE) as sold on here only has two wires on the molex side,is that enough to be able to 7volt it?

Indy500 · 6 May 2006 at 17:07

Hmm...wont work, because you need the 5v wire as well (which that molex doesnt have).

Steve_h · 6 May 2006 at 17:13

what about this one?Akasa AK-CB423-ADPT 4 - 3pin adapter cable (CB-012-AK) Its got 4 wires on the molex side.
I've only ever read about 7volting but never tried it,so not bested place to talk about it :confused:

If all else fails theres alway this one:Akasa 3 Pin fan speed reduction cable (FG-006-GE) It brings it down to 10 volts,I'm assuming it has 3 pin at both ends as The picture doesn't show it all.

Indy500 · 6 May 2006 at 17:17

Molexes have a 12v and a 5v (with a ground for each). It requires you to solder the wires. This picture will illustrate what you need to do:

12v - 5v = 7v of course.

Edit: this gives more detail:

http://www.hardforum.com/showthread.php?t=901967

Steve_h · 6 May 2006 at 17:24

Cool ta,thanks for the link

So basically I need to get the wires from the fan onto the 1 and 4 pins of the molex to get a 7volt then.

Steve_h · 6 May 2006 at 18:14

Well that was painless,no sparks...loud bangs

Thanks for that sr4470,temps are back down again

Indy500 · 6 May 2006 at 18:16

Dont use it with cheapo PSUs though.

Steve_h · 6 May 2006 at 18:21

lol,now you tell me...

I should be ok in that department ta.What does it do though to cheap psu's out of interest?

Indy500 · 6 May 2006 at 18:23

Steve_h said:
lol,now you tell me... I should be ok in that department ta.What does it do though to cheap psu's out of interest?

The mod effectively feeds the 5v current back into them, so cheap psus can get overloaded eventually.

cavemanoc · 7 May 2006 at 09:49

Which is why they recommend not running anything else off the line that's being 7v modded (Your Hdd's won't apreciate getting non-standard voltages!)