sub mesa :
Not really, with modern games even all movie data is copied. Some games still require the CD/DVD in the drive, but only for copy protection purposes. So the speed of your optical drive only matters for installation, not in any case game performance.
I agree that the best plan is to fully load the game onto the hard drive. Where that isn't possible there is this:
http://users.telenet.be/erik.deppe/cdspeedfaq.htm
"Some games crash with my new high speed drive.
All high speed drives will spin down after a while. This is done because letting it spin at high speed all the time would dramatically reduce the life of the drive.
If the game (or other program) wants to access the drive again, the drive has to spin up. This will take a few seconds and might be enough to cause trouble with some games.
However there is a utility which will allow you to change the spindown time.
It can be found at:http://www.ncf.carleton.ca/~aa571
Some drives (Plextor) allow you to select the spindown time.
The spinup/down time can be measured with CD Speed 99."
A non-gaming consideration is data backup to a DVD.
Mike Ramsey