SatPro A60 can hardly run at 2.8GHz since Thermal Throttling issue

Question

Hey guys, a nightmare for A60, its CPU clock can hardly run at 2800MHz which it's supposed to, since the A60's 75? Thermal Throttling Deadline is too easy to reach.
By using utilities called RightMard CPU Clock and Mobilemeter , I found that A60's entry temprature to Thermal Throttling was 75?. When that temperature is reached, cpu clock would slow down to 1500 MHz (you cannot see this by using normal test program, because Throttling is like cheating...i.e force CPU to halt for sometime in order to prevent overheating), and when temperature go back under 70?, it will return 2800 MHz. Another deadline: the auto-shutdown temperature is 85? for A60.
Althought the temperature which Mobilemeter got is the temperature of the heat sink, not the CPU kernel, it seems that oshiba made this 75? deadline too low (Intel's default deadline is likely about 90?). Additionally, with the badly designed heating sink system, the temperature usually keeps above 70-80 ? with room temperatur 15? and only doing some basic word processing or browsing and also with the machine almost dust-free. All of these mean that the laptop can hardly run at 2.8GHz. You can never enjoy that speed in any graphic game.
The actual clock must be test use RightMark Clock, it can test whether CPU is forced to halt frequently due to Thermal Throttling. Anyone wants to do this experiment can download these two free software from:
RMC(177Kb):
http://cpu.rightmark.org/download/rmclock_18_bin.rar
Mobilemeter(40Kb):
http://www.geocities.co.jp/SiliconValley-Oakland/8259/release/0310/mm0310.zip
along with SuperPI, which can make the CPU temperature as high as you like by opening it serval times at the same time
http://ftp15.enet.com.cn:88/pub/system/sysanaly/superpi-8.zip
Finally, my original idea to write such topic here is not only telling a truth, but also that I want Toshiba people could do something on this issue, either make an updated bios to allow turn Thermal Throttling off, or make the deadline for it higher than just 75? ,
like you did on satellite 1805's bios updating last time:
Version 2.10 09-24-2002
A modification was made to allow BIOS alone to enable and disable CPU throttling during Windows 98SE operation.
Give the original CPU speed back, because that's the only reason I and some other people chose this machine.

Answer 1

Hi Al
Well, I dont know if you have experience in the notebook technology but the warmness is a known issue on all notebooks. Its a fact that all parts (Cpu, graphic card, etc.) in the unit produce a lot of warmness and its very difficult to cool all this parts because there is no place. You can not compare the notebook and desktop PC!
Furthermore to protect from overheating the CPU has an internal temperature sensor. (You have to know this) If the computers internal temperature rises to a certain level, the cooling fan is turned on or the processing speed is lowered. You can select whether to control the CPU temperature by tuning on the fan first, then if necessary, lowering the CPU speed.
Or, by lowering the CPU speed first, then if necessary, turning on the fan. You can use the Cooling Method item of the Basic tab in Toshiba Power Saver.
These are the special features:
Maximum Performance: Turn on fan first, then if necessary lowers CPU processing speed.
Performance: Uses a combination of fan and lowering the CPU processing speed.
Battery optimized: Lowers the CPU processing speed first, then if necessary turns on the fan.
Furthermore if the CPU temperature reaches an unacceptably high level with either setting, the system automatically shuts down to prevent damage.
Hope this description can explain this issue.
Best regards