Release Notes:

This is a complete, updated release of the NVIDIA nTune. You are not required to install a previous version of this application before installing the latest version.
nTune 5.05 adds support for GPU temperature monitoring and overclocking on all motherboards.
On nForce motherboards where specific BIOS support is not available, only basic functionality will be available.
Products support for advanced motherboard monitoring features:
nForce 220, nForce 220D, nForce 415 and nForce 420D
nForce2 and nForce2 400
nForce2 Ultra and nForce2 Ultra 400
nForce2 400R and nForce2 Ultra 400Gb
nForce3 150 and nForce3 PRO 150
nForce3 250, nForce3 250Gb and nForce3 PRO 250
nForce4 Pro 2200, nForce4 Ultra, and nForce4 SLI
nForce 590 SLI, nForce 570 SLI, nForce 570 Ultra, nForce 550
Supported operating systems for this release:
Windows XP
Windows XP x64 Edition (SP1 5.2.3790.1830)
Best when run at 1024x768 16-bit color