@paradigm I'm not to clued up on the Abit slot 1 boards. I thought they were quit good at overclocking? 133fsb has always been one of those "Maybe Possible" features on slot 1 boards. I think most Slot 1 boards struggle with anything over 100fsb. I have had 133fsb going on both my Gigabyte and Asus board, but that was coppermine on a MSI Master Sloket. I've had powerleap and upgradeware slokets and neither would play nice at 133fsb. My Asus P2B was the same, post with 124fsb but would crash.
I have a nice S370 board which does 140fsb easy and will do 150fsb but its not fully stable at 150, problem is it wont accept Tualatins unless modified.
You've spurned me on to give my ECS P6S5AT board a go. Its a SIS 653T chipset which supports Tualatins along with DDR. Any overclocking features in the bios are no existent but you can use a tool to set the FSB and it actually has the correct divider at 166fsb. I meant to re-cap it but there is like 21 caps on it and i was like uhhh. It does work but i don't think the caps help at all.
This week has been a bit manic, not had much chance to do much retro stuff. Been working on some Nutanix clusters from home. I had a Compaq Armada M300 Laptop turn up which i haven't even had chance to look at yet!
So there were two versions of the Abit BH6, v1.0 (which I have) uses the Cypress W124G PLL (clockgen chip) which only officially supports 100fsb (and gives fsb[PCI] options of 66[33], 75[37.5], 83[41.5], 100[33], 112[37.3], 124[41.3], 133[44.3]), on the 1.0 version board you essentially have 66, 75, 100 and 112 as usable bus speeds as beyond that the PCI bus is too far out of spec to be reliable. Revision v1.1/1.2 use the Cypress W196G PLL and has official support for 133fsb (and gives fsb[PCI] options of 66[33], 75[37.5], 78[39], 81[40.5], 83[41.5], 90[30], 95[31.6], 100[33], 105[35], 110[35], 112[37.3], 115[38.3], 120[40], 122[40.6], 124[31], 126[31.5], 133[33], 135[33.75], 137[34.25], 138[34.5], 140[35], 142[35.5], 144[36], 150[37.5], 155[38.75]) which gives a massively more useful range of fsb options, as anything that stays below around 38MHz on the PCI bus should be fine judging by the fact I can use 37.3MHz right now without issue.
I'm not bothered about sticking with an Abit board (though I do hold a candle for them as that was my go-to brand back in the 90s and 2000s), but finding a board with 1/4 (and possibly even 1/5) dividers is my goal. Not sure if I stick with 440BX or look to go i820 (possibly with RDRAM) for the replacement board. 440BX is just such a compatible chipset and I know that the P3 (even fast Tualatin) can't make use of the RDRAM memory bandwidth, it would just be for the hell of it (and to own some RDRAM).
I want to stick with Slot-1 as I already have decent S370 setups (albeit dual-socket), there was no point in hunting out the iP3/T to then go back to S370!
I've never tried a SIS chipset P3 board, my Socket 7 board is a SIS though. I never found them to be the most reliable of platforms.
