o_o That's.. slow.
I can't really answer that question off hand, but honestly, for a 33mhz boost, I wouldn't say it's worth the time to bother putting it in. As a general rule of thumb, a Pentium series chip is going to be better than a Celeron, even if it's a slightly higher speed. Personally, I wouldn't bother with it, but it's your call. ^^