Vrangel,
I am also running my Celeron 600 at 900 MHZ, using MSI 6905 slocket. I had to bump the voltage to 1.75 from the default 1.7 V. I cannot read the CPU temperature as Tyan S1854 doesn't offer mobo monitoring. I was just wondering what cooling system you are using for the processor. I am just using the retail HSF. It is very stable though, but I keep the case open for proper air circulation, just in case. Could you please recommend a good cooling for my CPU? Thanks a lot. Also, is there a way that we could read the CPU temperature?