Got my motherboard and CPUs back just recently (been playing about with Duron 1.3GHz but couldn't bare to let my BP6 go (also have to love the ability to run everything you can think of at once and still have enough power to play Solitare - I love SMP systems
)) and I noticed that once I put the system all back together again it wasn't quite as stable as it was before I went AMD for about a month.
So, I went back to 2x 450 at default voltage and slowly upped the FSB until I had crashes (running Seti@Home and playing Hot Pursuit 2 - all in the name of education of course
), and then I'd go and up the core voltage a little and see if that helped. So, as I type this my BP6 is running at 486 (4.5 x 108) and 2.05 volts. I'm not far now from what I had before.
But, one thing that I noticed when I was playing around with different bus speeds and the like was that at 108 MHz bus and using WPCredit (gotta love that utility), I could achieve some incredible memory results in SiSoft Sandra 2001te Professional's memory benchmark. With my setup all tweaked out, I achieved Integer speeds of 401 MB/s and Floating point speeds of 410 MB/s. I'll post some screenshots tomorrow. It just blew me out of my boots though - to think that the good old BX chipset still has that much left in it!
One thing a little worrying is that my VTT voltage falls very low under high stress. The lowest I saw it was when I was stuffing around at 110 MHz and after running Seti and some benchmarking suites I checked MBM and found that VTT dropped to a low of 1.41. The lowest I remember getting before was 1.45 (highest hasn't changed - about 1.55). I never quite got around to replacing the EC10 capacitor on my board - it's a 100 uF, but it never really troubled me too much before. I did go and put some heatsinks on all the voltage regulators on the board though - the one right below the AGP port got incredibly hot before putting the sinking on it!