Acer 5920G + T9300 = overheating?

I popped a T9300 into my 5920G which went smoothly. But it seems its getting to hot...? I measured up to 66 Degrees C on the cores under load and 47 C idle.....? I though the stock processor T7500 and the T9300 disapated the same power?

 

Thats normal - overheating is 80+ degrees

Well actually 90 I think. But 80 due to offset of temperature

 

I think that should not happen. Did you check if it downclocks when in idle? and are you sure you mounted the heatsink properly, and the thermal paste too?

 

The idle number's a little high, but 66 on full load is better than my T5550, I can give you that much.

 

Try undervolting. Undervolting will show a massive reduction in load temps but not much of a decrease in idle temps.

And when UVed, the T9300 will run at a max frequency of 2.4GHz at 12x.

What sort of temps were you experiencing with the T7500 ?

 

Everything is mounted correctly. The cpu throttles back when nothing much is running but using Firefox for example at the cpu jumps to 2500Mhz and stays there. I wouldn't have been too worried but the system becomes slow and flaky at these temperatures.

 

Those temps are perfectly normal. High temps are above 80*C, and above 95*C the CPU will cause bugginess. Try tuning your OS, to reduce background HDD and memory usage. Thats the best you can do. If you were seeing lower temps with the T7500, then that CPU must have had its thermal sensor zones screwed up.

Undervolting should help you reduce your load temps for the T9300.

 

How does one undervolt? Bios or windows? Does the cpu auto down adjust frequency to keep the cpu stable?

 

There is a very good Undervolting Guide here. BIOS won't show you the options to change the voltage, so you'll have to do it through windows.

Basically, Voltage*Current = Power (TDP in this case)
TDP is the max power consumption, which is reached when CPU is under load.

Less voltage = less power = (less TDP), so the CPU will run cooler when its voltage is lowered. There are some noticeable decreases in idle power consumption, so you will see an increase in battery life, and decrease in temps, without any compromise on performance. It just needs to be done right.

You have to make sure that all multipliers are stable, by stressing each one of them.

Good Luck.

 

Ok, thanks for the link and info

 

Are you sure your fan speed is being managed properly?

When I upgraded from a T5550 to a T9300 in a 5315 the fan management didn't work properly and it overheated very badly - crashing the laptop completely when being soak tested.

The problem was solved by reloading the OS (Vista Premium in my case). The fan control worked normally after that with no overheating (temps never above 70c) or crashes of any kind.

You might try loading IK8fan first in case that helps and its a lot quicker than reloading the OS!