E6400 overheating throttling

http://www.fileden.com/files/2008/3/3/1794507/ThrottleStop.zip

I've been working mostly on the Core i7 mobile issues but now that I had some time, I've been able to add a few more features for Core 2 users.

I added a Clock Modulation meter directly to ThrottleStop so you can monitor for this before deciding if you want to disable it.

I also got rid of the 6.5 multiplier request since those don't seem to exist for any of the Core 2 CPUs I've tried. I also separated VID from the multiplier adjustment so they can be adjusted independently now. Running the maximum multiplier with the minimum VID resulted in 20C lower core temperatures while running Prime95 Small FFTs on a T7200. There's a lot of potential here for reduced heat and increased battery life.

RMClock is a great tool but as you said, it hasn't been updated for a while.

Where ThrottleStop goes from here is up to the user community and the feedback I get. I've had lots of positive feedback from Core i7 owners but next to no feedback from Core 2 owners.

It would be dead simple to add a monitoring panel to this app with temperatures, multiplier and load monitoring but I need to know what users want to see before I proceed.

After reading about ThrottleGate and the Latitude E6400 / E6500 throttling themselves down to a crawl, I decided to write a small, extremely efficient app that can totally fix that problem. Where did all the angry users go? You will barely notice any CPU Usage from this app yet it has the power to make your Latitude run up to 20X faster. That's not a misprint. When your computer is throttled down to 5% of its potential, ThrottleStop will instantly bring your computer back up to 100% and keep it there. No more throttling. No more problems. No more waiting for Dell to come up with a permanent fix.

What do I have to do John Ratsey to spread the word? Should I start a new thread that focuses on Core 2 owners?

 

I would love to see something like I8kfanGUI in regards to the temps and it has a nice little graph:



Still I just downloaded ThrottleStop installing now. I run XP so cant comment about Vista/W7 but I use a combination of i8kfanGUI and RM Clock. i8kfanGUI to monitor the different temps and dump them to a txt file, and RM Clock to unthrottle the CPU.

 

Big Edit: Now I see where RM Clock lets you access the two different types of Clock Modulation.

 

If the software works with all the Intel CPUs then the hardware forum would be the best home for a thread. However, unless very popular it is still likely to sink out of sight.

If you improve the voltage control section to give a range of user-defined voltages and frequencies then your program becomes an alternative to RMClock for undervolting and we can get you a mention on the first page of that thread.

The one I used to use is on the tab for an individual profile. 100% throttling means no throttling. I needed it with the early E6400 BIOS which used to throttle the CPU if running off a 65W PSU - unnecessary if using Intel graphics and fixed by Dell a year ago.

John

PS: 21 Dec - I see that someone has linked to your software in the Rightmark forum.

 

My problem went away a few months ago with a motherboard, fan change. It seems to have come back with bios A19. For no apparent reason it throttles down to 1595 and stays there. I don't have to restart the machine. After a while, it goes back to normal.

I don't think it's the GPU as I test it with Earth and CODuty and everything's OK. Seems random.

I have the nVidia.

 

Hi unclewebb

I have an e6400 with an intel core 2 duo CPU exhibiting the throttling issues documented here and elsewhere.

I've tried ThrottleStop and Real Temp but either I don't understand what I'm doing, or it's not doing anything.

Real Temp 3.40 is reporting P9500 798.00MHz 266.00 x 3.0 in the top line. My PC seems to be running quite slowly. I'm not really sure how to interpret this? What does it all mean?

I started ThrottleStop and nothing changed. Am I looking at the right things?

 

OK. Check it out: I went back down to A17 and the problem went away. Wow!

 

Update - when I checked the "set multiplier" it seems to have kicked in. At first I tried this at 10.0 and my system completely stopped responding (I had to physically switch it off and back on again).

Next time I tried at 8.0 and Real Temp is now reporting:

P9500 2128.0 266.00 x 8

The PC is performing much better.

Is there any risk to the hardware of doing this?

 

unclewebb:

From what I can see if I set a multiplier, let it run for a while but then press "Turn ThrottleStop Off", it doesn't revert back to the way it was before - eg. Real Temp still keeps reporting x 8.0 (or whatever my multiplier was).

Is there a way to completely undo was it had before?

 

After you turn ThrottleStop off, you might have to load your CPU for a second and then let it go back to idle before it starts working like before.

ThrottleStop is mostly designed to fix throttling problems when you are gaming on AC power and the computer is heavily loaded and slowing down.

The 100.0% number in ThrottleStop is the current clock modulation. Run ThrottleStop to monitor this but don't enable Set Multiplier and don't put a check mark beside Disable Clock Modulation. Run a test like Prime 95 for a few minutes to load your CPU and see if your laptop does any throttling. It might lower the multiplier when fully loaded for a while and after that it might start to use the Clock Modulation feature of the processor which can really slow things down. If you don't have these issues at full load then there is no reason to use ThrottleStop.

A P9500 supports Super Low Frequency Mode (SLFM) which means that it can drop down to about 800 MHz at idle. If you don't want it doing this then go into the Control Panel -> Power Options and set the Minimum processor state to 100%.

You can also use the i7 Turbo program on your Core 2 CPU and use it to create a log file when gaming. This should give you a good idea of how your CPU is running while gaming.