Hey everybody,
I have been searching through all the threads posted here about Acer 6920 Laptop, and Acers in general and have found none than speak to my specific problem.
Recently, my CPU has started heating up almost instantaneously to ridiculous temperatures (100 degrees + via RealTemp) This overheating occurs in any flash based video program (ie Youtube/Hulu) and in most every game I can play on my laptop.
The first few seconds after the game or movie starts, CPU temperature spikes from an idling 35-40 degrees to 96-100+ degrees within 3-4 seconds. This is all at the maximum CPU multiplier of 12x.
These are the issues:
At high processor loads (where the multiplier is 11x, 12x and 13x with IDE) the temperature of both CPU cores rapidly rises from around 40 (44) degrees C idle to 97 (103) degrees idle within 5-10 seconds of the load being applied.
The temperature values are taken from HWMonitor and Realtemp, with the RealTempt value in brackets.
This overheating results in throttling, where the CPU cycles from 12x or 11x speed (2.4 and 2.2 GHz approximately) down to 6x (1.2 Ghz) rapidly. The throttling seems to stabilise the CPU temperature at around 97 (103) degrees C, about 3 degrees below the shutdown threshold in RealTemp.
In every possible torture test and real world usage scenario, the laptop automatically shuts down (ie, all power is lost instantly, equivalent to holding down the power button) in almost the EXACT SAME TIME PERIOD : 10 min 30 seconds to 10 minutes 45 seconds. I repeated the Orthos "small FFTs-stress CPU" test around 15 times, along with tests using full screen youtube videos, flash videos and video games.
Stuff I have tried already (which is not to say I may have done things wrong)
Software
Formatted all drives multiple times
Reinstalled Windows 7 professional 64x multiple times
Ran tests in Safe Mode
Flashed BIOS from version 1.07 to 1.16
Updated to Nvidia 9500GS drivers 197.16
Hardware
Cleaned Dust from back panel mesh covering the vents
Cleaned Dust from fan
Cleaned dust from heat sinks
Tightened Heat Sink screws
Undervolting
Undervolted using RMClock to minimal values for 12x, 11x, 10x, 9x speeds. (1.1375V, 1.0875V, 1.075V, 1.075V respectively)
12x speed at any voltage resulted in near instantaneous rise of temperature to 97 (103) at which point it held steady until the 10:40 mark, at which it invariably resulted in shut down
11x speed at any voltage resulted in a SLOWER rise of temperature but still ended up at 97 (103) after ~ 8 minutes, again the laptop shutdown at the 10:40 mark
10x speed at any voltage resulted in a MUCH SLOWER rise of temperature to around 76 (90) after 10 minutes, but yet again the laptop shut down at the 10:40 mark
9x speed at any voltage resulted in the SLOWEST rise of temperature to around 73 (80) . I have not yet checked to see if it shuts down
THE ONLY WAY to stop the laptop shutting down for any long period of time under stress is to throttle it by 50%. In this case the temperatures stay below 70 (80) and the computer does not shut down, However performance is severely compromised as the processor is running at an effective 1.2 Ghz.
TLDR: My CPU overheats like crazy, I have tried undervolting, formatting, flashing BIOS, and dusting. Help?
I have been searching through all the threads posted here about Acer 6920 Laptop, and Acers in general and have found none than speak to my specific problem.
Recently, my CPU has started heating up almost instantaneously to ridiculous temperatures (100 degrees + via RealTemp) This overheating occurs in any flash based video program (ie Youtube/Hulu) and in most every game I can play on my laptop.
The first few seconds after the game or movie starts, CPU temperature spikes from an idling 35-40 degrees to 96-100+ degrees within 3-4 seconds. This is all at the maximum CPU multiplier of 12x.
These are the issues:
At high processor loads (where the multiplier is 11x, 12x and 13x with IDE) the temperature of both CPU cores rapidly rises from around 40 (44) degrees C idle to 97 (103) degrees idle within 5-10 seconds of the load being applied.
The temperature values are taken from HWMonitor and Realtemp, with the RealTempt value in brackets.
This overheating results in throttling, where the CPU cycles from 12x or 11x speed (2.4 and 2.2 GHz approximately) down to 6x (1.2 Ghz) rapidly. The throttling seems to stabilise the CPU temperature at around 97 (103) degrees C, about 3 degrees below the shutdown threshold in RealTemp.
In every possible torture test and real world usage scenario, the laptop automatically shuts down (ie, all power is lost instantly, equivalent to holding down the power button) in almost the EXACT SAME TIME PERIOD : 10 min 30 seconds to 10 minutes 45 seconds. I repeated the Orthos "small FFTs-stress CPU" test around 15 times, along with tests using full screen youtube videos, flash videos and video games.
Stuff I have tried already (which is not to say I may have done things wrong)
Software
Formatted all drives multiple times
Reinstalled Windows 7 professional 64x multiple times
Ran tests in Safe Mode
Flashed BIOS from version 1.07 to 1.16
Updated to Nvidia 9500GS drivers 197.16
Hardware
Cleaned Dust from back panel mesh covering the vents
Cleaned Dust from fan
Cleaned dust from heat sinks
Tightened Heat Sink screws
Undervolting
Undervolted using RMClock to minimal values for 12x, 11x, 10x, 9x speeds. (1.1375V, 1.0875V, 1.075V, 1.075V respectively)
12x speed at any voltage resulted in near instantaneous rise of temperature to 97 (103) at which point it held steady until the 10:40 mark, at which it invariably resulted in shut down
11x speed at any voltage resulted in a SLOWER rise of temperature but still ended up at 97 (103) after ~ 8 minutes, again the laptop shutdown at the 10:40 mark
10x speed at any voltage resulted in a MUCH SLOWER rise of temperature to around 76 (90) after 10 minutes, but yet again the laptop shut down at the 10:40 mark
9x speed at any voltage resulted in the SLOWEST rise of temperature to around 73 (80) . I have not yet checked to see if it shuts down
THE ONLY WAY to stop the laptop shutting down for any long period of time under stress is to throttle it by 50%. In this case the temperatures stay below 70 (80) and the computer does not shut down, However performance is severely compromised as the processor is running at an effective 1.2 Ghz.
TLDR: My CPU overheats like crazy, I have tried undervolting, formatting, flashing BIOS, and dusting. Help?
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