SpeedFan 4.2.9 - Free PC Hardware Monitor

SpeedFan 4.2.9 (Windows, Freeware, 1.42MB) [via Filehippo] is a freeware program that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips. SpeedFan can even access S.M.A.R.T. info for those hard disks that support this feature and show hard disk temperatures too, if supported. SpeedFan supports SCSI disks too. SpeedFan can even change the FSB on some hardware (but this should be considered a bonus feature).

Recent changes:

• added full support for AMD K8 (Sempron, Opteron, Athlon 64) internal temperature sensor
• added full support for Intel ICH8 SMBus
• added full support for NVIDIA MCP04
• events can now send EMAILs using the built-in multithreaded server
• SEND MAIL for events sends an email containing all current readings (temperatures, fans, fan speeds, voltages and hard disk status)
• implemented hysteresis in fan speeds control (this should greatly reduce fluctuations)
• optimized chart repainting
• fixed multiple instance detection of video cards
• added detection and support for new revisions of IT8712F
• added detection for some Analog Devices chips
• added support for hardware monitor at unusual addresses on W83627EHF

This is my favorite hardware monitor. Even though most motherboards have an included prorprietary software that does something similar, I still prefer SpeedFan.