Info on SpeedFan
Moderators: NeilBlanchard, Ralf Hutter, sthayashi, Lawrence Lee
Info on SpeedFan
There is an option in SpeedFan that says "set fans to 100% on program exit." Can anyone explain to me how my computer manages to hold the fan settings after the program has closed out?
-
- *Lifetime Patron*
- Posts: 5316
- Joined: Sat Jan 18, 2003 2:19 pm
- Location: St Louis (county) Missouri USA
Well can speedfan control your fanspeed at all? If it cannot, it will not be able to speedup your fans when you close the speedfan program.
This is a sort-of safety device....should any program crashing occur, your fans go to 100%. Works for me, but only on those computers that speedfan can control. On the other computers, speedfan only reads temps, but cannot control fans.
This is a sort-of safety device....should any program crashing occur, your fans go to 100%. Works for me, but only on those computers that speedfan can control. On the other computers, speedfan only reads temps, but cannot control fans.
-
- Friend of SPCR
- Posts: 889
- Joined: Sun Dec 05, 2004 11:34 pm
- Location: Finland -- Folding For SPCR
Hi,
they only stay at 100% if another piece of code (BIOS or fan control software) doesn't set them to another value. So if you have enabled in your BIOS the automatic fan speed control for i.e. your CPU fan, when exiting Speedfan it sets the fan output to 100% but it is shortly brought down by the enabled BIOS control.
But if you don't have any options enabled in BIOS (for fan controlling) then the fans will stay at 100% until a different value is written to the control register.
So you don't have to tell your fans constantly to run at a certain speed, the chip controlling the fans just checks certain register values to see how fast it should run the fans. So if it is set 100% it will stay at that "automatically" without PC software.
Hope you got the idea, my explanation might be a bit confusing?
they only stay at 100% if another piece of code (BIOS or fan control software) doesn't set them to another value. So if you have enabled in your BIOS the automatic fan speed control for i.e. your CPU fan, when exiting Speedfan it sets the fan output to 100% but it is shortly brought down by the enabled BIOS control.
But if you don't have any options enabled in BIOS (for fan controlling) then the fans will stay at 100% until a different value is written to the control register.
So you don't have to tell your fans constantly to run at a certain speed, the chip controlling the fans just checks certain register values to see how fast it should run the fans. So if it is set 100% it will stay at that "automatically" without PC software.
Hope you got the idea, my explanation might be a bit confusing?
Re: Info on SpeedFan
I cannot explain it, but a soft reboot without the "set fans to 100% on pgrm exit" box checked will leave your fans at the user set speed. Even if I close out the program, my fans remain at my specified speed. I would think that this is a registry entry that allows your fans to remain at your specified speed even when the prgm is shut down. However, if i turn my pc off (hard reboot), then when I power back on, the fans are at 100% until SF loads if its in your startup folder. I leave it unchecked because I see no need for them to ramp up to 100% on exit. This is my case anyway.halfpower wrote:There is an option in SpeedFan that says "set fans to 100% on program exit." Can anyone explain to me how my computer manages to hold the fan settings after the program has closed out?
-
- Posts: 968
- Joined: Fri Jan 07, 2005 7:13 pm
- Location: Bristol, UK
- Contact: