[XPS M1330] CPU Throttling at full load

Hi all-

I am a recent owner of a XPS M1330 system.

A brief config recap:

- T9300 (2.5Ghz 6MB L2 Cache)
- 4GB (Hynix)
- 320GB Toshiba 5400 RPM
- 8400M GS
- WLED screen

Could you guys (doesn't matter if you don't have a M1330, I would love to see M1530, Inspirons, Lattitudes, etc.) do this little test for me:

- Download RMClock ( http://cpu.rightmark.org/download/rmclock_235_bin.exe)

- Download Orthos ( http://sp2004.fre3.com/beta/orthos_exe_20060420.cab)

Start RMClock (go to the monitoring tab) and start a 'Blend Orthos Run' like so:



After around a 2 minute run:



Let it run for a while (say 30 minutes) and see if the CPU starts throttling (it should not.... in any case... the laptop should be able to run its rates speeds without any kind of throttling.)

Regards,
Karan

 

I have the same system and the same "problem". CPU is always at 2.5GHZ (Playing solitaire or play a dvd). Actually, it turns out that the graphics card (8400) down clocks to save battery life instead of using speedstep to down clock the cpu.

 

Neither playing a DvD or solitaire puts any sort of load on the CPU or the GPU.

I am talking about the CPU overheating and reducing its speed (from the spec 2.5Ghz) because of high temperatures.

 

I think the speed reduction when CPU over heat is a standard feature is many laptops.

 

But then why advertise/sell a laptop with a 2.5Ghz CPU when it effectively boils down to a 2Ghz processor under load?

 

can you show when it thermally downclocks?

 

Sure thing. I am sure this is present in all models, just wanna know at what speeds of the CPU it is more prevelent.

I wanted to post this fast, hence stopped it and took a screenshot.

Now let me start it off again.

 

100C temps.... woot, thats toasty... ofcourse, thats unreasonable load on the CPU (Orthos Small FFTs) but still...

 

Over 90c is a red flag

Double check your cooling system.
-Update BIOS to latest version
-heatsink is seated properly
-fans are fully operational and arent clogged with dust.

Theres no reason it should go that hot.

 

My t9300 with 8400m m1330 never reaches over 48 degrees under orthos or orthos with full gpu load.

 

Hi-

Could you please post some screenshots?
You measured that temp (48C) using which program? Please try and use RealTemp (google it) or CoreTemp (again google) and report back.

Karan

The laptop is hardly a week old. The BIOS is A10 version. How do I check if the heatsink is seated properly? Wait for the engineer to come to my place and do a diagnostic? Fans are fully operational... thats for sure.

 

I measured the temps using rmclock, coretemp and HWMonitor

 

48c? thats a little hard to believe for a stressed out T9300 (2.5 ghz)

 

It's undervolted using RMClock.

 

if you go into Power Options and customise whatever plan you're on you can set both minimum and maximum processor speed to 100%.

just don't have it on your lap when you do...

 

Please post a screenshot of RMclock and Orthos (small fft) running... that will help a LOT of people out.

Exactly my thoughts. My idle temps are equal to his load temps.

A possibility... hopefully you can teach usall how to go about it.

 

I am not having a problem with the CPU coming down due to power management, but rather because it overheats and is throttled down by the CPU damage prevention department. If you see my screenshots, the CPU is reaching almost 100C loaded in 7 or so minutes of Orthos Small FFT (equivalent to some CPU intensive processing.)

 

You may have to wait a while as I have an exam this afternoon. 48C is with the default blend and AS5 thermal paste and undervolted. I also have the 9 cell battery raising the laptop off the desk.

My CPU idles at 32C in a 23C environment.

I'll do a small FFT test for you after the exam.

 

Whoa thats a nice idle temp. I guess I can simulate the 9cell condition by angling the laptop a wee bit.

Looking forward to your Orthos Small,RMclock,CoreTemp/RealTemp screenshot.

Karan

 

Mine idles at 32c aswell but it maxes out at 63c as seen here (Just after 1hr of BF2 OC'd)

Ill be applying AS5 this week and hopefully achieve 29c or less (Freshly cleaned fans, UV'ed, Cooler, + AS5)

Maxing out at 48c just doesnt sound right for a 2.4ghz cpu

 

Do paste the screen shots Kreeeee.

 

Bump......

 

fwiw, my own experiences with CPU auto-throttling... .

Using Intel's TAT:

%Load...............Core0...........Core1........MHz
80....................75................79............2200
95....................62................66............2200-1600-2200-1600-... this throttle pattern started instantly.
90....................78................83............2200 for 3mins, then throttled down to 1600 for 12 secs...

It took about 4mins @idle for the temps to get down to a constant 40/43C respectively.

The above was with the A05 BIOS but things haven't improved with newer revisions. My Thinkpad T60 can run TAT at full load w/o throttling, so I'm not sure why the M1330 can't...

 

Sorry I never got back to you:

http://forum.notebookreview.com/showpost.php?p=3386458&postcount=67