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SpeedFan 4.37 Copyright 2000-2008 by Alfredo Milani Comparetti |
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What is SpeedFan
SpeedFan is a program that monitors voltages, fan speeds and temperatures
in computers with hardware monitor chips. SpeedFan can even access S.M.A.R.T. info and show
hard disk temperatures. SpeedFan supports SCSI disks too.
SpeedFan can even change the FSB on some hardware (but this should be considered a bonus feature).
SpeedFan can access digital temperature sensors and can change fan speeds
accordingly, thus reducing noise.
SpeedFan can find almost any hardware monitor chip connected to the 2-wire SMBus
(System Management Bus (trademark belonging to SMIF, Inc.), a subset of the I2C protocol) and works fine with
Windows 9x, ME, NT, 2000, 2003, XP and Windows Vista. It works with Windows 64 bit too.
Hover on the icons to read more about specific SpeedFan features.
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News
SpeedFan 4.37 Final is online! |
This latest release fixes some issues found in 4.36. You are strongly suggested to install this
release over 4.36. The issues were caused by a side effect introduced by a third-party library used by
SpeedFan. The behaviour of that library silently changed in a way that broke one internal SpeedFan routine
related to the Exotics tab. Now everything is fixed. All the great benefits introduced by SpeedFan 4.36
are still there. SpeedFan now adds support for temperature readings on almost any nVidia video card and
prepares the way to the forthcoming improved fan speed control on such cards. AMD K11 built-in temperature
sensor is fully supported too. Support for new hardware monitor chips has been added, even for some
obscure and undocumented devices found on DELL servers. ARECA RAID support (SMART data is accessible for
all the hard disks connected to these controllers) has been improved and verified on the latest hardware.
One of the most interesting features, though, is that fan speed control strategy has been improved and
it now reduces fan speeds more aggressively. This is very important and if you tied any fan speed to
hard disk temperatures then you will hear the difference.
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Revamped web site. |
The web site now uses DHTML and Javascript. I hope that you will enjoy a better surfing experience. I
performed usability tests under all major browsers. What's more important, the web site is still accessible
using W3M or LYNX under a text only environment :-)
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Release notes
| 4.37 | - | fixed a bug where, after resuming from suspend, fan speeds were not really changed |
| - | added full support for AMD CD5536 SMBus | |
| - | added identification of Fintek F75111R | |
| - | fixed an Exotics tab Access Violation | |
| - | fixed a bug that caused all of the EVENTS to be lost after entering CONFIGURE | |
| 4.36 | - | greatly improved temperature reporting for almost all nVidia video cards |
| - | now fan speeds are lowered more aggressively | |
| - | added support for AMD K11 temperature sensor | |
| - | added full support for SMSC EMC6W201 | |
| - | added full support for SMSC SCH5127 | |
| - |
How fan speed changing works
SpeedFan monitor temperatures from several sources. By properly configuring SpeedFan, you can
let it change fan speeds based on system temperatures. When choosing parameters for the minimum
and maximum fan speed, try to set them by hand (disable all the VARIATE FANs checkboxes) and
listen to the noise. When you hear no noise from the fan then you can set that value as the
minimum fan speed for that fan. I suggest to use 100 as the maximum value, unless you hear a
lot of noise from it, in which case you might reduce the maximum speed to 95 or 90. You can
set, say, 60 as the maximum value and, sometimes, I myself set it that way. Consider that when
the WARNING temperature is reached, the program sets the fan speed to 100, whatever maximum
speed you selected. One last word should be said regarding the USE FAN x listbox. In my pc,
more than one temperature changes when a fan runs faster. You can configure on which fan every
temperature should rely. On my system, TEMP1 and TEMP3 are both influenced by FAN1.
Credits
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A few numbers...
SpeedFan can handle:
- almost any number of South Bridges
- almost any number of hardware monitor chips
- almost any number of hard disks
- almost any number of temperature readings
- almost any number of voltage readings
- almost any number of fan speed readings
- almost any number of PWMs
Disclaimer
This program is aimed at the power user. At those who know what they're doing. I've known of no
real problem caused by SpeedFan, but may be it's due to the fact that once it made the PC
explode and the user disappeared in the blast, thus being unable to report :-) Anyway: SpeedFan
can be extremely useful, but you should first watch its behavior before setting and forgetting it.
Feedback
You can contact me at alfredo [at] almico.com if you've got
any question or suggestion or discover any strange behavior. I'd appreciate an e-mail from those
of you who try and find useful my program. Just a line of text will do.
Thanx for your attention.
Thanx for your attention.
Links
You might consider to visit my Delphi Page.
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