Is it worth the trouble to use tinyint instead of int for SqlServer lookup tables?

Question

When designing a lookup table (enum) in SqlServer 2005, if you know the number of entries will never get very high, should you use tinyint instead of int? I\'m most concerned a

Answer 1

There is also the factor of maintaining the indexes/disk backups/tape backups which will also take up space, but I'd say the most important is IO and memory performance.