Toshiba & ATI RS350 chipset

I have a A85-S107 with the ATI RS350 chipset. Does any one know where I can get information about the chipset, what Front Side Busses it supports. Thanks.

 

RS350/RC350 both support upto 800MHz FSB....But how much the BIOS allows in terms of overclocking and upgrading is unknown.

You could check out PC Wizard 2008 and Everest Ultimate, for FSB frequencies supported....

 

Thanks for the fast reply. I wanted to try a Pentium M 1.73 with 533FSB in place of the 1.4 celeron, but wasn't sure if the chipset would support it. I'll post back how it turns out.

 

It might work. You could try a 7x5, and pin-mod it....

 

The Pentium M 1.73 with 533FSB works in the A85-S107. It's a lot faster than the 1.4 Celeron. Fan runs about the same as before.

 

At least you've got speedstep, and you can undervolt now.

 

I also have a Toshiba A85-S1072 with RS350 chipset. It originally comes with Intel Celeron M 360J [1.40GHz, 1MB L2, 400MHz FSB - Dothan core] and works with 14x multiplier (14x100fsb). Recently I replaced it with Pentium M 1700/2M (SL7EP) - also Dothan core. The problem is that the speedstep feature doesn't seem to work because instead 17x multiplier in during high procesor load I get 6x all the time. I've changed power management profile to home office/desktop in windows and I have even checked that on fedora core 10 live cd and it's still 600mhz. I don't have any option in bios that could be related with speedstep. My bios version is 1.2 - the newest one is 1.3 but the changes aplied to that one are just:
- A change was made to the operation of the L-Ctrl Fn Home key combination for the Japanese keyboard so the cursor would move to the beginning of the document.
- The US, UK, and JP, keyboard matrices were combined.

You've managed to acomplishe a similar task with Pentium M 1.73 with 533FSB (that seems even less compatible to oryginal celeron with 400fsb at first glance), so if you have any suggestion that could help in my case I would really appeciate that. Thanks.

 

This post has been around for a bit, but it is great that someone on the net has the same topic. I have the same problem. I found that is phoenix bios editor, the speedstep instruction is disabled by the manufacturer. Phoenix bios says its locked so I cannot change it. We pretty much need someone who can mess with the bios. Or someone who can create a program that installs a drive, which would allow direct access to hardware to allow the processor to change its multiplier dynamically. or does anyone know of a pin mod that doesnt have to do with fsb but multiplier.