Hi Terry

Check your PC's fans, the RAM chips and processor heatsink are not covered / clogged up with dust. 

Compressed air can is best but keep your face out of the PC !!!  Failing that, a new long bristled 1/2 inch paint brush and a vacuum cleaner.

It is surprising what builds up inside a PC and then leads to overheating !

Need a smiley for a Eeeeuuww Yuk expression.

John

Morning John.

Thanks, same thought occurred to me yesterday afternoon and I gave everything a good blasting.

BTW, what maximum temperature is generally regarded as acceptable? FWIW, core 0 is usually the highest in my case.

Well, my usual DVD 'burn' to VOB folder was successful from MEP 2014 but the second attempt to redo the 2½ hour export to MP4 failed again. However, repeating it immediately from MEP 2013 worked fine.

Reluctantly I'm going to have to do all exporting of largish projects from MEP 2013 in future. PITA, but I can't afford to waste hours like this.

--
Terry, East Grinstead, UK

Hi Terry

. . . . BTW, what maximum temperature is generally regarded as acceptable? FWIW, core 0 is usually the highest in my case. . . . .

Depends on how much work the processor is doing, the processor model, heatsink efficiency, rate of air flow through the case and ambient temperature.

The temperature should range from 40 - 65 deg C.  Above 75deg C and you need to be thinking about replacing the heat sink with a bigger or more efficient one especially if you exceed this temperature regularly for sustained periods ie several hours

If the processor hits 90 deg + then you are in danger of burning out - the built in thermal sensing should have been reducing the clock speed well before then to keep the temperature within acceptable limits.

HTH

John

Hi Terry

Those temps John is referring to are as reported by the temp sensor on the CPU case I assume, the individual cores will show somewhat hotter in Speed Fan utlity.

My CPU is overclocked and I did once get a blue screen while rendering Mpeg4 and so reduced my overclock slightly. Mpeg4 uses more of the processor % when rendering and is probably why the DVD does not have a problem in Export. Also I think 2014 may use a little more of the processor than 2013 which may be why you can achieve a result with 2013.

One thing you could try in 2014 is using HW acceleration, either with Cuda and / or by ticking the use "Calculate effects with GPU" in the export template, which would reduce the load on the CPU.

Another thing that might help is just reseating the RAM modules. This worked for me when my wifes PC started throwing blue screens.

Peter

Hi

. . . as reported by the temp sensor on the CPU case . . . .

They are the temperatures reported by the CPU sensors to the motherboard, and are the processors Junction Temperature.

A processor has a maximum operating temperature ( Tj max) and the cores of the  processor should not exceed the maximum junction temperature allowed.

The problem is Tj max depends on the chip design - for example my i5 4770K is rated to 105 deg C but the actual temperture is very dependant on the efficiency of the heatsink  - in my case  the cores rise to about 60 -61 deg C when under very heavy load exporting HD video using the stock Intel heatsink supplied with the processor.

AMD processors tend to run 10 - 15 deg hotter than Intels

John

Hi John,

My temps seem quite a bit higher than yours John, according to the tool I use, Core Temp. This screenshot show how it looked just before I started composing this post.

https://dl.dropboxusercontent.com/u/4019461/CoreTemp-1.jpg

Earlier, while I had breakfast I burned a DVD using ImgBurn and overnight I re-ran my attempt to export that 55 minute MP4 we've been discussing (this time apparently successfully I'm pleased to say). So those max core temps shown are presumably from that later stages of that long export. (FWIW, my office was cooler here last night than it's been recently..)

But although that 79 C looks worryingly high compared to your numbers, the Overheat Protection Settings (which I've never touched) seem to have a default suggestion of 90 C for one optional setting.

https://dl.dropboxusercontent.com/u/4019461/CoreTemp-2.jpg

And I don't recall ever getting a warning, visual or audio, from Core Temp. Yet high temperature does seem a likely candidate cause for my blue screen crash...

--
Terry, East Grinstead, UK

Hi Terry

IMHO those running temperatures are too high for your processor,  I found a single reference to a core temperature of 76 deg C before the speed step kicks in to reduce the processor clock speed, I could find no reference to the max allowed core temperature.

I also found that the maximum case temperature, ie the temperature of the heat spreader that contacts the heatsink, that Intel will guarantee error free operation is  71.4 deg C. 

My old Q8400 runs at 50 - 52 deg C under max load and is of a similar architecture to the Q9450 - it does not have the stock cooler - but a larger CoolerMaster one

If those readings are accurate I would be considering replacing the heatsink with a more efficient / bigger one that fits your processor./socket.

Also check that you heatsink fan is speeding up when under load.

John

Hi Terry,

Before sinking any money in your computer, you might want to consider a new one. Your XP has calcium in the joints and has arthritis. For Peter, Vista has a carbon buildup blocking all colours except blue (leftover from IBM).

After reading through the messages below, I decided that it was time to throw out my old PC with XP on it. Yesterday was recycling day at the EcoCentre. I removed the dust, the HD's and bid the machine adieu. It hadn't been turned on for about a year. Now my newer computer can move into a new space. Should have done this earlier.

As for Vista, my wife had it on a nice laptop and gave it to me when it came down with a permanent case of blue screen of death. Nothing would resuscitate it but I managed to get the data off using Puppy Linux. Then I installed Windows 7. But, the machine only has 2GB of Ram, the battery lasts about 2 minutes, and the reliability of the HD is questionable. Looking at the cost of upgrading and replacing the battery, and maybe the HD, I decided that the machine can collect dust in my closet for another year. I bought more software instead.

So guys, I suggest that you bite the bullet and upgrade to new machines before that blue screen becomes permanent.

Hi John,

IMHO those running temperatures are too high for your processor

Yet Core Temp reports Tj is 100 C, and its default for alerts is 90 C.

Terry, East Grinstead, UK