Grem Five wrote on 2025-02-03, 04:56:

I did a little research on the 815 on one of my boards I have had for a long time https://theretroweb.com/motherboards/s/intel- […]
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I did a little research on the 815 on one of my boards I have had for a long time https://theretroweb.com/motherboards/s/intel- … etteville#chips

I know it came with a 1400 celeron when I got it and I have tried tualatins in it before and always came up with strange results I just figured it was bios limitations since it was a basic gateway board. From my research years ago I thought there was only 2 variations of B stepping chips out there: SL5NQ and SL5NR and as far as I know I havent seen anything else to prove that wrong.

Well the odd thing is when I checked this board it has SL5YN and tonight I googled that and came up with this:

The attachment 815.jpg is no longer available

from here https://www.elhvb.com/mboards/Intel/files/doc … fv/a5656012.pdf

I have never seen a A2T stepping listed before, I thought only B stepping could natively run tualatins. Well here is the thing that was always weird about that board it can run tualatins except I cant get it to run any of the server versions (512k cache). Is that a Intel built in limitation of the A2T stepping? I have tried searching for info on the A2T stepping and can find nothing about it.

There are certainly no PIII-S cpus on the processor compatibility list... https://web.archive.org/web/20070905231157/ht … b/cs-013091.htm