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SpeedFan 4.41 Copyright 2000-2010 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 4.41 Final is online! |
There are so many improvements in this release. Intel QST support has been greatly improved, including
version 2.x and adding full fan control. Support for several Nuvoton chips (like the W83667HG,
the W83667HG-B and the W83677HG-I) has been rewritten and fully verified. USB enclosures using Cypress
chipsets are now supported and SMART data is read. Events now can react to hard disk fitness and
performance values. The glitch related to the OK button while editing events is now gone. A lot of
bug fixes and performance improvements were applied and a lot of new hardware has been supported.
As usual, both the installer and the executable are digitally signed with my company's (SOKNO
S.R.L.) certificate.
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New hard disk database is online! |
SpeedFan's online in-depth hard disk analysis now uses an updated revision of its internal
database containing the model for each known hard disk. Currently there are 2684 known hard disk
models. The latest hard disks are included in the db and all the models have been updated. This
means, for example, that new hard disks now properly inform about their "Power On Hours
Count" taking into consideration the real values reported by the end users.
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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
| 4.41 | - | added full support for Intel 5 Series/3400 Series SMBus |
| - | added full support for Intel QST 2.x | |
| - | added full support for fan control for Intel QST | |
| - | added full support for Fintek F71889F | |
| - | added full support for Fintek F71889ED | |
| - | added full support for SB8x0 SMBus | |
| - | added full support for Nuvoton W83677HG-I | |
| - | added full support for Nuvoton W83667HG-B | |
| - | added SB7xx/8xx PM2 fan speed readings and fan control | |
| - | added full support for MCP98242 | |
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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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