Samsung Q35 coolong system, ineffective?

Hi, I downloaded the intel thermal analysis tool ( http://www.techpowerup.com/downloads/392/mirrors.php)

and ran it, i did a 100% workload level test, the cpu temp shot up from 36c (running at 1ghz per core) to 85c within 1 minute (running at the full 2ghz per core) once it was at 85c it kept down clocking the cpu to 1333mhz per core for a couple of seconds to cool the chip down, is this normal?

I mean that's a pretty ineffective cooling system if you ask me, whats the point of having a cpu that fast (C2D t7200 2.00ghz) if the system is going to keep down clocking it when you need the power?

 

In my experience the Q35's cooling system is good. It is quite possible that it is getting clogged up. See this thread this thread as an example. The problem will arise over time but will arise faster if the computer is used on a soft or fluffy surface (and the Q35 is of a size that people will use on a bed).

You can try sucking the muck out using a domestic vacuum cleaner with a nozzle, but the best approach is to remove the keyboard (although I'm not 100% sure if that provides access to the fan on the Q35).

John

 

Actually, that's the first thing i did, it seems that the thermal analysis tools 100% workload test hammers the cpu like nothing else can, ive been running 4 1080 high bit rate mkv movies side by side while installing c&c3, the cpu seems to be hanging around the 81-82c mark with no down clocking.

I might replace the thermal grease on the cpu with some arctic silver compound, that should help with cooling a little.

 

Yes, Intel's TAT is designed to give maximum thermal stress. Perhaps it would be better to run a more conventional test such as the wPrime stress test (you may need to manually select 2 cores) or the Prime95 torture test (again, you may need to have two instances).

I would also recommend that you look into using RMClock to undervolt the CPU. The T7200 in my X60plus was set as 1.187V @ 2 GHz (12x) but has been rock stable at 1.05V 12x for more than a year. Heat is proportional to voltage squared and that reduction takes about 10C off the maximum temperature. Some lucky people have T7200s which are stable at 1.0V @ 2GHz.

The quick guide to undervolting is to run something which fully stresses the CPU, then step down the voltage until you get an error (Prime95 has a built-in checksum) or BSOD then put the voltage back up a couple of steps and leave the computer running an overnight stress test.

John