I had a machine with a Celeron 1100A when I was a kid, and I hated it. Painfully slow and unstable too. The whole Celeron range was/is junk in my opinion.
There were celerons back in the days of slot 1 that were awesome! The 300mhz ones IIRC were super easily and stably overclockable to 450mhz and out performed (?) most of the regular pentium range of the time...and for cheap!