Nvclock allows you to tweak your Nvidia card
under Linux and FreeBSD. It features overclocking, hardware monitoring, tweaking of OpenGL settings, and much more.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This version adds support for the latest GT200
cards from Nvidia and significantly improves
functionality for Geforce8/9 hardware. First of
all, it adds smartdimmer (backlight control) for
various Geforce8/9 laptops. Second, it gives more
accurate temperature information and offers
fanspeed adjustment support on Geforce8/9
hardware. In addition, it offers many more fixes
and small improvements.
This version adds Geforce8 support, contains a rewritten low-level Geforce6/7 overclocking backend [experimental], and adds BIOS PLL table parsing for Geforce6/7/8 cards. It has fan speed adjustments for 8800 cards equipped with ADT7473 chips, support for additional Geforce7 AGP cards, and support for more NV-CONTROL OpenGL settings in GTK. It fixes many bugs, including pipeline and Quadro faking issues.
This version features lots of bugfixes and support for the GeForce 7300/7600/7800GS/7900, Smartdimmer support for 7600Go laptops, fan speed adjustment support for 7600/7800GS/7900 cards, support for ADT7473/W83781D sensors, PCI ID modding support, fan speed adjustment and temperature fixes for NV3x/NV4x boards, pipeline modding fixes, BIOS parsing fixes, and improved experimental low-level overclocking and clock reading for NV4x/G7x boards.
This version is a huge improvement over 0.7 but might contain various bugs due to all newly added features: GeforceFX/6/7 support (Coolbits and low-level); pipeline modding for NV4x cards; smartdimmer support for 6200Go-based laptops; hardware monitoring for LM99/MAX6659/F75375S/W83L785R chipsets; support for internal NV43/NV44/NV47 temperature sensors; fan speed adjustment for FX5900/6600GT/6800GT boards and some sensors; OpenGL options using the NV-CONTROL extension; a rewritten GTK2 interface; BIOS parsing (GeforceFX/6/7); x86-64 support; and Windows support for debugging purposes.
This release includes support for GeforceFX/QuadroFX hardware. Note that overclocking is only supported on GeforceFX5200 cards. It also contains FreeBSD support, a way to restore the original speed, an improved overclocking algorithm, AGP 8x fixes, improved laptop and Nforce support, support for NVClock in startup scripts, and finally the removal of the old GTK 1.x client.