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SpeedFan 4.39 Copyright 2000-2009 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 4.40 beta 5 is online! |
SpeedFan 4.40 beta 5 is online! Winbond W83667HG support has been greatly improved and preliminary tests
show that on several Asus boards now more fans (including CPU's) can be controlled using SpeedFan. Let me
know your experience. CPU identification has been greatly improved too and now all of the Tjmax values
published by Intel should have been implemented. I need your tests and reports.
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SpeedFan 4.39 Final is online! |
New routines to access SMART hard disk data have been added to this release. SMART data is now available from
a wider range of motherboards, chipsets and OS versions. On most hardware, SHORT OFFLINE and EXTENDED OFFLINE
non-blocking and non-destructive tests can now be performed. As usual, several new hardware monitor chips
are supported. Refinements, improvements and bug fixes were applied, as usual. Both the installer and the
executable are now digitally signed with my company's (SOKNO S.R.L.) certificate.
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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
| 4.39 | - | added full support for Fintek F71889F, even at unusual addresses |
| - | added support for a new method to access SMART data | |
| - | added support for SCSI and SAT hard disk SMART access | |
| - | added full support for SuperMicro PWS-865-PQ PSU | |
| - | added full support for Winbond W83795G | |
| - | added full support for SMSC EMC1402 | |
| - | added SHORT and EXTENDED OFF-LINE SMART TEST in SMART tab. This feature works on a number of supported interfaces and not on all of them | |
| - | added voltage readings for Winbond W83793G | |
| - | properly read Tjmax on Core i7 based Xeons | |
| - | relabeled IT8512F to IT8512E | |
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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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