The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.

BOINC must have run a bench mark during this "slow" period.

I then received the new part and put the replacement fan in the PC. Wow back to full speed.

I then noticed that my new returned WUs had a claimed credit of a silly value of around 4.9!

I assume that this is because the WUs were crunched at full speed compared to a bench mark done at low speed.

I have two questions

1) Is my assumptions correct on why the claimed credit is so low?

2) Will these WUs be validated OK? It is too early to have had any reach quorum yet. I wonder if the crazy claimed credit will cause an issue with validation.

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The amount of credit claimed has nothing to do with validation. Once validation has occured then it is used to figure out how much credit to grant. The odds of validation are probably slightly lower due to the increased odds of the CPU throwing errors when it was having problems, but not by much.

I would manually rerun the benchmarks and not worry about it.

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BOINC WIKI

BOINCing since 2002/12/8

I would manually rerun the benchmarks and not worry about it.

Cool, pleased to hear that validation is not based on credit claimed. :-)

I forced a manual benchmark run and straight after it finished the CC went and downloaded several more WUs so looks like the benchmark values where from the "slow period".

Many thanks

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The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

I was impressed with the Intel processor in that it kept going. It took two weeks for the replace fan to arrive (the company concerned has been removed from my preferred supplier status LOL). During this time I noticed the time taken for WUs to complete was almost double the usual time, but the PC kept on going. Once the fan was replaced all returned to normal speed with no permanent damage.

I feel more comfortable leaving my PC running unattended after this experience.

The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

That depends on the AMD CPU and motherboard you are using. The first Athlons had no protection and will fry if the heatsink failed. There was nothing that could be done about it except to open your PC every so often to inspect the heat sink and vacuum the PC's guts while you are at it. If you have an Athlon XP or MP, there is a thermal diode for the motherboard to use, but the CPU leaves it unused. If your motherboard has the correct logic needed to read it constantly and shut everything down when the heatsink fails, you are protected. If your motherboard does not have this logic, replace it if you do not want your CPU to fry. Athlon 64s read their own thermal diode and will shut themselves down if the temperature gets too hot.
By the way, Pentium IIIs will shut themselves down if they get too hot. Pentium 4s slow themselves down if they get too hot.

That depends on the AMD CPU and motherboard you are using. The first Athlons had no protection and will fry if the heatsink failed. There was nothing that could be done about it except to open your PC every so often to inspect the heat sink and vacuum the PC's guts while you are at it. If you have an Athlon XP or MP, there is a thermal diode for the motherboard to use, but the CPU leaves it unused. If your motherboard has the correct logic needed to read it constantly and shut everything down when the heatsink fails, you are protected. If your motherboard does not have this logic, replace it if you do not want your CPU to fry. Athlon 64s read their own thermal diode and will shut themselves down if the temperature gets too hot.
By the way, Pentium IIIs will shut themselves down if they get too hot. Pentium 4s slow themselves down if they get too hot.

Yes, I know about the diodes in some AMD CPU's and that for the mobo to be certified by AMD it must contain a protection cct, but from sites I have read not all AMD mobo's are certified including some from the main players.

So my comment is to people how build or specify computers using AMD CPU's is check the mobo is certified or else you could have a fried CPU.

And the advantage of the Intel CPU's is they don't destroy themselves and the computer keeps running and you can check, even if only in the BIOS, without opening the computer the CPU temperature and speed of the CPU fan.

I've been called to look at a slow pc and when I opened it found the heatsink/fan assembly resting on the graphics card, the centre lug had snapped on the ZIF socket. Replaced hs/fan with one that used three lugs at each side and machine is still working. total cost about £6 ($10)

Andy

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The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

Has more to do with the mobo and any implemented "protection" than it does with the CPU.

The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

Has more to do with the mobo and any implemented "protection" than it does with the CPU.

Explain???

Andy

[/quote]
Has more to do with the mobo and any implemented "protection" than it does with the CPU.
[/quote]

Explain???

Andy
[/quote]

I have mobos that will protect the CPU, even if the CPU is installed without a heat-sink and fan.

The temp sensor (settings in BIOS) shut down the computer, so the CPU is not fried.

Has more to do with the mobo and any implemented "protection" than it does with the CPU.
[/quote]

Explain???

Andy
[/quote]

I have mobos that will protect the CPU, even if the CPU is installed without a heat-sink and fan.

The temp sensor (settings in BIOS) shut down the computer, so the CPU is not fried.
[/quote]

The temp sensor you speak of, in intel cpu's is in the cpu and when triggered interrupts the cpu clock, this effectively slows down the cpu. It is a function of the cpu not the mobo.

For AMD Athlon cpu's you are right the temp sensor in the cpu is used to trigger a mobo cct, which AMD recommend is used to switch off the psu, if the mobo is to be certified by them.

I am not certain what the situation is with the AMD 64 bit cpu's, as there are not 64 bit versions of programs that I normally run, why would I need one.

Andy

The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

Yes that's right indeed if you have a Thunderbird series and a motherboard pre 2001 built, nowadays the situation is resolved..

Nowadays you can have your Intel based system heating up your whole apartement instead of turning on the radiator.. That isn't what i call efficient computing per watt used..

Only a mindpoke..

//Vyper

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_________________________________________________________________________
Addicted to SETI crunching!
Founder of GPU Users Group

The processor fan recently failed on my PC. Intel seem to have got it sorted in that the processor kept going but at a much slower rate to keep the temperature under control.....

The advantage of using Intel rather than AMD. Their CPUs would have just fried.

Andy

That depends on the AMD CPU and motherboard you are using. The first Athlons had no protection and will fry if the heatsink failed. There was nothing that could be done about it except to open your PC every so often to inspect the heat sink and vacuum the PC's guts while you are at it. If you have an Athlon XP or MP, there is a thermal diode for the motherboard to use, but the CPU leaves it unused. If your motherboard has the correct logic needed to read it constantly and shut everything down when the heatsink fails, you are protected. If your motherboard does not have this logic, replace it if you do not want your CPU to fry. Athlon 64s read their own thermal diode and will shut themselves down if the temperature gets too hot.
By the way, Pentium IIIs will shut themselves down if they get too hot. Pentium 4s slow themselves down if they get too hot.

Ok.. ok i should've read more before i replied to an earlier post, saw that the debate was going already :)

//Vyper

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_________________________________________________________________________
Addicted to SETI crunching!
Founder of GPU Users Group