Installing Nvidia drivers is simple, straight-forward, and usually incorporated into your distribution's package repository. For example, Fedora Core 5 offers GeForce driver revisions 8756 and 8762 through select repositories, so installation involves little more than invoking Yellow Dog Updater, Modified (YUM) or YUM Extender (YUMEX). Nvidia clearly wins on this front, because ATI doesn't offer this luxury. That said, the ATI installation process is sufficiently trivial that it hardly matters: the graphical installer can not only install the proprietary driver set, it can also create a localized package for use with your native package manager (except for Fedora Core).
ATI's minimalist Control Center installs into two locations within the Fedora desktop menu subsystem, as shown in the following images:
ATI's Control Center location in System Preferences
ATI's Control Center located under System Administration
Nvidia's X Server Settings control panel is accessible through the Applications System Tools menu path shown here: