[Solved] EP45-UD3R Won't Allow Controlling Of Fan Speeds

I recently added some Scythe Slip Stream 120mm 1600RPM fans to my CM 690 case.

They are plugged directly into the motherboard, yet they are unnecessarily running constantly at 1600RPM. This causes them to be SCREAMING loud, yet when I go into Easy Tuner 6, or Smart Fan and try and change the fan speeds, there isn't a response. What's wrong?

You need fans with a switch to control the speed or plug them into a simple fan controller.

Bilbat (in this forum) has some tricks to re-wire fans but that's the only other option.

http://www.tomshardware.com/forum/ [...] ol-argghhh
If you need more help, post back...

ckaz, it's not as tricky as it seems.

Try this at least to see if worth messing with. Make sure one of your new fans is plugged into the SYS_FAN2 header. Disconnect the other one - not the CPU fan! - to keep their sound from intruding. If you've got a fan on SYS_FAN2 now, plug it into another header. You'll see two things from this. First is whether the new loud fan can be controlled well from BIOS and/or a program - make sure you've enabled fan speed control in the BIOS.

If the new fan works well with control - and the old fan if it exists doesn't become a howling demon - then you know that's the solution you want.

With the rewiring, you don't even have to connect the 3 wire from another header - this only displays the RPM. So you can control both fans from the single header just by splicing their other two wires together.

But at least test plugging one of them into the controllable header as an experiement.

bilbat, I think the product you want to link to is this one:
http://www.newegg.com/Product/Prod [...] 6812189063

The other link would allow one fan to connect to two sources or be used to hook in a controller I believe. The link I added allows two fans to run from a single header, which I think is what most people are looking for when they order the other wiring.

The Arctic Cooling devices are nifty! I guess there's no issue of enough amperage coming off the CPU/PWM connector to run several fans - rather like my old questions about adding extra splitters on a drive power cable.

One thing I'm still not clear on is whether a non-PWM fan can be converted to one.

Ok now you guys have really lost me

I would really rather not have to buy anything online, so for now I'm going to try and work around that option as much as possible.
Please explain this to me. I should plug "one" of my new fans into SYS_FAN2, and unplug my other loud one from wherever it was. What exactly will this prove?
And am I able to be unplugging fans and plugging in fans while the comp is on, or at least on sleep? Or do I have to shutdown everytime I open up the case.

Thanks for the answer on PWM bilbat.

ckaz,
Never do anything live if you can avoid it. And to make sure your motherboard is REALLY dead, either turn off the switch on the power supply or unplug the AC cord. The front panel switch doesn't turn off the system fully even when set it BIOS to do a full power off.

Yes, plug in one of the airplane fans into the controllable Sys_Fan2 to test it. And you can leave the case off - if your system doesn't like that, there's a BIOS setting to allow it to ignore the case cover.

If you like the control you gain on the one fan, consider getting one of these in some future purchase - either online or in a real computer tech store. What's the thing about buying online?
http://www.newegg.com/Product/Prod [...] 6812189063

Well, it certainly looks like a dandy. Don't know anything about em, amazed that Scythe seems to make a dozen models! That one looks like top-of-the-line.

In the US, the cost of shipping is often equaled by the savings in sales tax, so often not a big deal. Besides, the price of the items is generally well under the price at super-stores.