Latitude E6400 Owner's Lounge, Part 2

i don't think there's som damage inside....
maybe, just some loose things when it dropped

reseat / reconnect all hardwares - hd, mem, batts, cmos batt, fan etc and try again

 

I was going to suggest the same.

There doesn't seem to be any serious damage. As MDR suggested, reconnect everything that is easy to unplug.

Also, shake your laptop a bit and see if any component falls out. If not, probably nothing broke.

 

Runs fine? There's nothing fine about the log file that mZimm just sent me from his Latitude E6400. It clearly shows the throttling issues that he is having. When the multiplier drops down to 6.0 and the bios sets clock modulation in the CPU at 12.5%, his T9600 that is rated at 2.8 GHz is struggling to perform at the equivalent of 200 MHz. Lucky he doesn't have SLFM enabled or it could be running at half this speed.

The throttling is identical to what tinkerdude showed the world in his 59 page ThrottleGate pdf document.

A T9600 has a default multiplier of 10.50 so the start of the log file shows that, plus a little bit of Intel Dynamic Acceleration which is a sign that the CPU is not yet fully loaded. The DTS column is a direct reading from the on chip CPU thermal sensors and shows that when throttling begins, the CPU is 52 degrees away from the Intel specified thermal throttling point. The only conclusion one can come to is that the throttling is being triggered by power consumption because there's no reason in the world that a CPU should start to throttle when it is 52C away from the Intel specified thermal throttling temperature.

The CPU tries to recover a couple of times but gets kicked in the teeth and starts throttling again. This same throttling scheme can be found in a wide range of Dell laptops built in the last two years that use a dedicated Nvidia or ATI GPU.

If you have a Latitude E6400 or an E6500 that has an Nvidia NVS 160M and are experiencing sudden slow downs while gaming then it would be a good idea to run a ThrottleStop log file like mZimm did so you can see exactly what's going on with your laptop. If you need any help interpreting your data, send me a copy and I'll be happy to help.

You can add GPU=1 to the ThrottleStop.ini configuration file if you'd like to also monitor and log your Nvidia GPU temperature.

Code:

  DATE     TIME    MULTI   C0%   CKMOD  CHIPM  DTS
05/27/10 18:49:07  10.50   39.7  100.0  100.0   52
05/27/10 18:49:08  10.58   39.9  100.0  100.0   52
05/27/10 18:49:09  10.58   37.1  100.0  100.0   52
05/27/10 18:49:10  10.59   42.9  100.0  100.0   50
05/27/10 18:49:11  10.50   40.9  100.0  100.0   52
05/27/10 18:49:12  10.58   41.0  100.0  100.0   52
05/27/10 18:49:13  10.57   42.2  100.0  100.0   52
05/27/10 18:49:14  10.13   40.8  100.0  100.0   52
05/27/10 18:49:15  10.58   39.7  100.0  100.0   52
05/27/10 18:49:16  10.58   38.5  100.0  100.0   51
05/27/10 18:49:17  10.58   42.6  100.0  100.0   51
05/27/10 18:49:18  10.58   42.4  100.0  100.0   52
05/27/10 18:49:19  10.58   45.3  100.0  100.0   49
05/27/10 18:49:20  10.53   48.7  100.0  100.0   51
05/27/10 18:49:21  10.52   49.4  100.0  100.0   51
05/27/10 18:49:22  10.51   56.2  100.0  100.0   52
05/27/10 18:49:23  10.24   41.8  100.0  100.0   52
05/27/10 18:49:24   7.92   45.6  100.0  100.0   53
05/27/10 18:49:25   6.00   69.9  100.0  100.0   53
05/27/10 18:49:26   6.00   70.1   87.5  100.0   54
05/27/10 18:49:27   6.00   64.6   75.0  100.0   54
05/27/10 18:49:28   6.00   61.0   75.0  100.0   54
05/27/10 18:49:29   6.00   60.5   87.5  100.0   54
05/27/10 18:49:30   6.00   65.2  100.0  100.0   54
05/27/10 18:49:31   6.00   68.5  100.0  100.0   53
05/27/10 18:49:31   6.00   76.5   87.5  100.0   54
05/27/10 18:49:33   6.00   78.1   75.0  100.0   54
05/27/10 18:49:33   6.00   66.1   62.5  100.0   54
05/27/10 18:49:34   6.00   63.5   50.0  100.0   54
05/27/10 18:49:35   6.00   57.2   37.5  100.0   54
05/27/10 18:49:36   6.01   51.1   25.0  100.0   54
05/27/10 18:49:37   6.01   44.1   12.5  100.0   54
05/27/10 18:49:38   6.01   36.4   12.5  100.0   55
05/27/10 18:49:40   6.01   34.1   12.5  100.0   55
05/27/10 18:49:41   6.01   33.8   12.5  100.0   55
05/27/10 18:49:42   6.01   34.2   12.5  100.0   55
05/27/10 18:49:43   6.01   33.8   12.5  100.0   55
05/27/10 18:49:44   6.01   34.0   25.0  100.0   55
05/27/10 18:49:45   6.01   36.0   37.5  100.0   55
05/27/10 18:49:46   6.01   43.3   37.5  100.0   55
05/27/10 18:49:47   6.01   49.9   50.0  100.0   55
05/27/10 18:49:48   6.00   58.8   62.5  100.0   55
05/27/10 18:49:49   6.00   67.4   75.0  100.0   55
05/27/10 18:49:50   6.00   74.7   87.5  100.0   55
05/27/10 18:49:51   6.00   70.8  100.0  100.0   55
05/27/10 18:49:52   6.00   76.3  100.0  100.0   55
05/27/10 18:49:52   6.02   65.8  100.0  100.0   56
05/27/10 18:49:53   6.44   45.1  100.0  100.0   56
05/27/10 18:49:54   6.23   50.6  100.0  100.0   56
05/27/10 18:49:55   8.37   47.3  100.0  100.0   53
05/27/10 18:49:56  10.37   40.1  100.0  100.0   55
05/27/10 18:49:57   6.08   54.0  100.0  100.0   56
05/27/10 18:49:58   7.33   44.6  100.0  100.0   56
05/27/10 18:49:59   7.46   40.9  100.0  100.0   55
05/27/10 18:50:00   6.00   57.3  100.0  100.0   56
05/27/10 18:50:01   8.34   62.4  100.0  100.0   53
05/27/10 18:50:02   9.05   54.6  100.0  100.0   56
05/27/10 18:50:03   6.35   69.4  100.0  100.0   55
05/27/10 18:50:04   6.00   63.0   87.5  100.0   56
05/27/10 18:50:05   6.00   74.1   75.0  100.0   56
05/27/10 18:50:06   6.00   70.2   75.0  100.0   55
05/27/10 18:50:07   6.00   63.7   87.5  100.0   55
05/27/10 18:50:08   6.00   66.0  100.0  100.0   55
05/27/10 18:50:09   6.00   73.3  100.0  100.0   56
05/27/10 18:50:10   6.00   90.4  100.0  100.0   56
05/27/10 18:50:11   6.00   77.0  100.0  100.0   56
05/27/10 18:50:11   6.00   84.6  100.0  100.0   55
05/27/10 18:50:12   6.00   91.1   87.5  100.0   56
05/27/10 18:50:13   6.00   88.1   75.0  100.0   56
05/27/10 18:50:14   6.00   77.3   62.5  100.0   56
05/27/10 18:50:15   6.00   63.0   50.0  100.0   56
05/27/10 18:50:16   6.01   57.0   37.5  100.0   55
05/27/10 18:50:17   6.01   48.7   25.0  100.0   56
05/27/10 18:50:18   6.01   42.8   12.5  100.0   56
05/27/10 18:50:19   6.01   35.4   12.5  100.0   57
05/27/10 18:50:20   6.01   34.2   12.5  100.0   56
05/27/10 18:50:21   6.01   34.3   12.5  100.0   57
05/27/10 18:50:22   6.01   34.2   12.5  100.0   57
05/27/10 18:50:23   6.01   34.3   12.5  100.0   57
05/27/10 18:50:24   6.01   34.1   12.5  100.0   57
05/27/10 18:50:26   6.01   35.4   37.5  100.0   57
05/27/10 18:50:27   6.01   44.0   50.0  100.0   57
05/27/10 18:50:28   6.01   50.8   62.5  100.0   57
05/27/10 18:50:28   6.00   60.0   75.0  100.0   57
05/27/10 18:50:29   6.00   58.1   87.5  100.0   57
05/27/10 18:50:30   6.00   59.6   87.5  100.0   57
05/27/10 18:50:31   6.00   62.2  100.0  100.0   57
05/27/10 18:50:32   6.00   78.0  100.0  100.0   57
05/27/10 18:50:33   6.12   64.6  100.0  100.0   57
05/27/10 18:50:34   8.00   40.6  100.0  100.0   56
05/27/10 18:50:35   8.31   48.7  100.0  100.0   57
05/27/10 18:50:36   8.05   42.0  100.0  100.0   57
05/27/10 18:50:37   7.88   39.8  100.0  100.0   57
05/27/10 18:50:38   8.10   41.8  100.0  100.0   57
05/27/10 18:50:39   6.71   50.3  100.0  100.0   57
05/27/10 18:50:40   8.62   38.3  100.0  100.0   56
05/27/10 18:50:41   8.64   50.3  100.0  100.0   56
05/27/10 18:50:42  10.36   47.1  100.0  100.0   55

 

I havent had any throttling issues since i had a mobo + heatsink + fann assy changed, added with BIOS A20, and hey presto, no more throttling for me

 

Unless it is set to throttle because Dell don't want a hot heatsink which will also increase the thermal cycling of the GPU and increase the likelihood of it dying. The nVidia GPU packaging problem has caused no end of inconvenience for both users and manufacturers.

John

 

I highly doubt it.
Dell choosed the Quadro.
Quadro's GPU's are rigorously tested and design to last long under heavy load and high temperatures 24/7. Moreover it's onboard components are of higher grades. Same applies for AMD/ATI FireGL's compared to Radeon's.
Also, is why they are more expensive even the low end models compared to the Geforce.

Additional information: High-end Quadro's in the series (NVS is the lowest, while FX is higher), you have additional features such as ECC everywhere on the GPU and memory to ensure 100% accuracy in any rendering/calculations, multiple-displays, sync with other Quadro's from a different system, more colors it can output, and many more fancy things.

Basically, a Geforce is always a Quadro that has been cut down, and the circuit board redesign to remove a lot of feature, use lower quality components, and lower grade circuit design (ready to apply shortcuts to cut cost).

To show this, look at Fermi, this is the first GPU from Nvidia that doesn't have a Quadro. The Geforce GTX 480 is not a full Fermi to start with.
Where is the Quadro?
They can't do it. Fermi is produces too much heat to be able to last long under rough conditions.

 

Unclewebb
Please put the download link to the latest bits of ThrottleStop in your signature. Thank you for your awesome work. Is there a dedicated thread to ThrottleStop here somewhere?

Also, is ThrottleStop a replacement or complement for RMClock? I ask this because I see options for adjusting voltage on the TS GUI...

Is anyone else seeing DPC spikes when changing screen brightness (PS: Fk you DELL)? I am using the latest drivers for all components from official sources.

 

I unpluged Wi-Fi, bluetooth, DVD, hard drive.
tried to load bios-nothing changed.
cpu fan is still not working, screen doesn't shows to load bios.
then my brother helped to find me this:
keyboard taken off and applying strong pressure over the graphics card during turning on laptop = works great, like new.
probably i need a new motherboard...
what do you guys think?

 

get dell to replace the entire machine.

 

I've done the BIOS upgrade and my fan is running quietly, as it did before. So for me (P8600 + Intel graphics) there doesn't appear to be any change in the fan rules.

Then, out of curiosity, I thought I would rerun Winsat. To my surprise the WEI headline score went up from 3.4 to 3.8 (ie 11% faster). The reason for this being the 3D graphics score. It's not long back since I last ran Winsat, so A24 seems to include a useful tweak to the Intel graphics.

I also reran 3DMark06 and got a score of 1061, which is a similar level of improvement relative the the 944 (ie 12% faster)which I measured when the E6400 was new. However, I now have Windows 7-64 and 4GB RAM, which might help, but the increase in both benchmarks is similar. But, before anyone gets excited, 10fps instead of 9fps isn't noticeable except in benchmarks.

John