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Old 24-11-2007, 03:32 AM   #4
Koolsk8boarder@excite.com
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Re: CPU throttling issue, struggling to find reason behind it.

On Nov 23, 5:23 am, "GT" <ContactGT_remo...@hotmail.com> wrote:
> <Koolsk8boar...@excite.com> wrote in message
>
> news:a82fbb77-d315-43e8-8d5a-b994653849a2@s6g2000prc.googlegroups.com...
>
>
>
> > Hello, I am looking for any kind of insight on an issue I am having.
> > My cpu seems to be throttling very often when playing a game, world of
> > warcraft, but I cannot figure out what the cause is. My system specs
> > are as follows:

>
> > Processor: Intel(R) Core(tm)2 CPU 6600 @ 2.40GHz (2 CPUs)
> > Memory: 2046MB RAM
> > Video Card: NVIDIA GeForce 8800 GTS 320mb
> > Power Supply: OCZ GameXStream OCZ600GXSSLI ATX12V 600W Power Supply
> > Hard Drive: Western Digital Raptor X WD1500AHFD 150GB 10,000 RPM 16MB
> > Cache Serial ATA150
> > Motherboard: GIGABYTE GA-P35-DS3L LGA 775 Intel P35 ATX Intel
> > Motherboard
> > Operating System: Windows XP Professional 32 bit

>
> > My cpu runs at 34 C idle, and about 40 when gaming. It is surely not
> > an overheating issue, and I do not have speedstep or anything of the
> > likes turned on in the BIOS. I will have stuttering type lag, causing
> > the game to freeze for a second basically, and it happens often. My
> > fps is also being cut by this. By monitoring my CPU with rightmark, I
> > have noticed that both cores of the cpu are throttling a bit,
> > basically whenever a pause occurs. It throttles from 2.4 to maybe
> > 2.2, but its enough to cause the lag. Sometimes it will spike as low
> > as 1400 and return right back to normal.

>
> Your problem has to be heat. There are several temperature values for the
> Core 2 CPUs. Each core has a temperature sensor and there is a sensor in the
> middle of the 'gap' (I forget what this 'gap' sensor is called). If you are
> seeing 34C idle and 40C under load as the 'CPU' temperature, then this might
> be the 'gap' temperature, for which 34-40 is quite high.
>
> With a 'gap' temperature of 31C, I get both cores around the 40C mark. When
> my 'gap' temperature rises to mid-high 30s, the core temperatures go to the
> low 50s, so if your 'gap' temperature is reaching 40C, then your core
> temperatures could be reaching mid-high 50s which, I guess, must be in the
> throttle zone.
>
> Download Speedfan or Everest (both free) and look at the temperatures in
> there. You will find you get temperatures for your Hard disks, a temperature
> for each CPU core and 2 other temperatures. One of these other temperatures
> is your CPU 'gap' temperature and the other one is probably the motherboard
> chipset temperature. You may of course have other temperatures in there, but
> they are not labelled helpfully, so you have to figure out which is which
> yourself - when the CPU moves from idle to load, the temperature that
> changes by several degrees, quickly is your 'gap' temperature.
>
> That graphics card will generate plenty of heat too, so your case is
> probably pretty warm, so one thing you could try immediately, is remove the
> case/side from your computer and make sure there is a fan or some airflow
> pointing into the case, then see if it overheats. If it still overheats and
> throttles down the CPU, then your CPU fan/heatsink is not fixed on or
> perhaps not working properly. Check the fan and heatsink for dust - perhaps
> it has all become clogged.


Hey, thanks for the advice. I have downloaded speed fan, and after
looking at the temps, I have found it displaying both my cpu cores at
about 33 C, but there is Core 0, Core 1, and then just plain Core.
The plain core, which I assume may be the gap temp you speak of, is
sitting at 53 C. So assuming that this in fact is the gap temp, I
suppose this needs to be looked in to. I just find it odd, as I use a
Zalmans fan/heat sink on my cpu, it has a good deal of fans in it too,
so overheating hasn't been a problem. There isn't much dust either,
as I regularly clean it out with compressed air. I suppose the best
thing I could do is remount the zalman fan?
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