Control fan speeds and voltages?

Elite · 08-15-2008, 03:22 PM

Okay so I have a window in my case that has two fans on it, one runs about 1670 RPM (connected via molex.)

and the other runs about 860-870 RPM (connected to the system fan jack on the mobo.)

What I am looking to do is speed the slower fan up and change the voltage it is getting because the LEDs on the fan are slightly dimmer than the other, and its kinda annoying.

Just for reference I have speedfan installed and have yet to see how it will work since I can't find any place to speed up the fan or up its voltages.

I cannot use my BIOS since its an HP motherboard and they have closed most of that off to the normal user.

I repeat do not point me to a BIOS solution or speedfan.

furball zen · 08-15-2008, 05:00 PM

Quote:

Originally Posted by Elite

Okay so I have a window in my case that has two fans on it, one runs about 1670 RPM (connected via molex.)

and the other runs about 860-870 RPM (connected to the system fan jack on the mobo.)

What I am looking to do is speed the slower fan up and change the voltage it is getting because the LEDs on the fan are slightly dimmer than the other, and its kinda annoying.

Just for reference I have speedfan installed and have yet to see how it will work since I can't find any place to speed up the fan or up its voltages.

I cannot use my BIOS since its an HP motherboard and they have closed most of that off to the normal user.

I repeat do not point me to a BIOS solution or speedfan.

http://www.xoxide.com/subl4poblred.html

Elite · 08-15-2008, 05:06 PM

Nor do I want one of those :P

I am looking for a software solution since that wouldn't even go into my case and if I connected to that then I would get an error on boot.

If the mobo doesn't detect a system fan on boot I get an error about it and then it doesn't complete the boot.
An other suggestions?

furball zen · 08-15-2008, 05:10 PM

Quote:

Originally Posted by Elite

Nor do I want one of those :P

I am looking for a software solution since that wouldn't even go into my case and if I connected to that then I would get an error on boot.

If the mobo doesn't detect a system fan on boot I get an error about it and then it doesn't complete the boot.
An other suggestions?

You can use a molex adapter that has the RPM wire you can plug in. I have a few laying around. Then the molex will power at full speed. Usually 80mm fans run around 3 or 4k rpm.

**Grez** · 08-15-2008, 11:26 PM

A software solution is probably not going to work. Your HP mobo is pretty locked down, and you'd have to override the voltage being delivered at the hardware level. This is the reason that most people, regardless of their system, choose a fan controller to handle this issue, as it eliminates all of the complication in the situation.

The reality is that, in your case, you're going to need a hardware solution. Whether that's buying a fan controller, or purchasing individual in-line controllers for each fan (these are cheap and even come with fans like the Thermaltake Smartfan series), you're going to need a device that can independently deliver/alter the voltage to each fan.

Do you have any free bays, either 3.5" or 5.25"? There are plenty of available controllers, many of them very cheap, that will fit into either size slot.

You get an error on boot if there's no fan? Most systems allow you to turn this detection off. Are you sure you can't turn off the fan speed detect option in your BIOS? If that's true, it's an incredibly limited BIOS. I've done nothing but custom systems for about the past 10-12 years, so I'm always shocked by how locked down the pre-fab ones are. If that's the case, however, it's probably just looking for continuity. You can check this by just jumping the pins for the onboard system fan (get a 3-pin fan connector, and just run a wire between the two + and - pins). If that ends your beeping, then a fan controller is in your future.

furball zen · 08-15-2008, 11:30 PM

Quote:

Originally Posted by Grez

A software solution is probably not going to work. Your HP mobo is pretty locked down, and you'd have to override the voltage being delivered at the hardware level. This is the reason that most people, regardless of their system, choose a fan controller to handle this issue, as it eliminates all of the complication in the situation.

The reality is that, in your case, you're going to need a hardware solution. Whether that's buying a fan controller, or purchasing individual in-line controllers for each fan (these are cheap and even come with fans like the Thermaltake Smartfan series), you're going to need a device that can independently deliver/alter the voltage to each fan.

Do you have any free bays, either 3.5" or 5.25"? There are plenty of available controllers, many of them very cheap, that will fit into either size slot.

You get an error on boot if there's no fan? Most systems allow you to turn this detection off. Are you sure you can't turn off the fan speed detect option in your BIOS? If that's true, it's an incredibly limited BIOS. I've done nothing but custom systems for about the past 10-12 years, so I'm always shocked by how locked down the pre-fab ones are. If that's the case, however, it's probably just looking for continuity. You can check this by just jumping the pins for the onboard system fan (get a 3-pin fan connector, and just run a wire between the two + and - pins). If that ends your beeping, then a fan controller is in your future.

Yea we talked on M$N for a bit, seems he could access a different section of the BIOS where he could control/disable the detection. So, i think its fixed. Maybe not :)

Auzner · 08-16-2008, 12:52 AM

Speedfan has a help file and internet tutorials... If you're using the 3 pin and it can read your mobo sensors the software may do it. I've had it work on weird stuff.