[ltp] Rovclock and Dynamicclocks / Rovclock and T40p

Laurent Gilson linux-thinkpad@linux-thinkpad.org
Mon, 30 Jan 2006 19:44:38 +0100


Hello

> (1) Does anybody here use it on a T40p and can tell me safe values for
> underclocking? My Mobility FireGL 9000 comes with 200 MHz memory clock
> and 252 MHz gpu clock. Especially the memory clock seems very sensible to
> underclocking, which makes artifacts appear on the screen.

Some cards require the GPU-core and mem to run at a certain ratio.

And are you sure about these values ? I think 200Mhz is the scaled down  
settings for the 9000.

> DynamicClocks would therefore interfere with rovclock, since
> it would overwrite changes made by rovclock.

I had tested it a bit some time ago: rovclock wins :). It fixes the speed  
of mem and core and the dynamic scaling stops working.

In the first time dyn-clock caused random lockups (Can't test current  
status, but seems to work). rovclock was a emergency/fail-save way to get  
lower power consumptions. There is no real need for rovclock if dyn-clock  
works. So dump it.

cu