I gathered all that through the use of magik and sourcery. Your motherboard does not officially support 133MHz FSB, so a 933 would be out of the question. There are 900's available, and even 1000E's that run at 10x100, but beyond 800 your really reaching the point where the slow performance of memory at 100 makes a greater speed processor not function up to expectations. Besides, the 1000E is about 1/3 more expensive than the 1000EB (133), simply because it's a low production unit. I would go for the 800, maybe the 850. If you want to TRY to find out if the unofficial 133MHz FSB will work, you can test it out with any 133FSB processor (667, 733, 800EB, 933, 1000EB). Maybe you can borrow one?
Cast not thine pearls before the swine