|No, but it'll compensate for that by being frightfully slow to install and use|
The install process time will depend on which method you use.
If you do a clean install, you can take advantage of the 'image' technology new in Vista installation process (which takes about 30 minutes, not including the key entry, partition option selections, and the performance assessment during final load).
If you do an upgrade, it will take up to 120 minutes due to the use of an 'XP' like installation process where hardware configuration, software configuration, and registry keys need to be written along with the OS file copying.
Speed of the OS will obviously depend in a large part upon the hardware of the machine it is installed on.
I run on a single core Pentium M processor based system, with a 533 Mhz FSB, 2 GB of RAM, mid-range ATI video (PCI express adapter) - all of which combine for a rating of '3.4' and works quite well.