Almost my favorite board of all time! So I guess I should liquidate some of those manuals I have!
I built many in the later P3TD series and still have an E6 with agp-Pro working and some dead LE's.
Anyway, I remember there being a cpu fsb 100/133 jumper and remember running a pair of 700/100's at 133 for me, only later using the T's at 1.26 and 1.4. The 4GB mem capacity kept them functional until, well, recently! I also seem to remember there being jumpers for the pci slots clock 33/66. I think 2 jumpers, for slots 1-3 and 4-6. So group 66 and 33 cards together. I remember many if not most quality cards doing fine at 66. For the CD database type applications of the past I would set up external scsi Pioners cd 6 pack changers or internal (5slot?) Nakamichis. Good times
I used to know what I was doing...