The NVSU has two different pages of system configuration options in it, defined as basic and advanced. Basic is composed of the FSB speed, AGP bus speed, some memory timings, fan speeds, and voltages for several different components. The FSB and AGP speeds, along with the memory timings are "universal" features, that is, they work without advanced support, and the rest of the features will require advanced support, and may still not be available in all cases(since there has to be BIOS support for the option). All basic options are implemented "on the fly", so it allows easy testing of what the limits are of a configuration.

On the second page, the "advanced" page, there are several more features, including the CPU multiplier, more memory timings, AGP speed, and cache controls. Overall, the advanced page resembles more of a CMOS setup screen than anything else, so it's fittingly appropriate that any changes made here are not done on the fly, and will require a reboot.