Can anyone recommend a good program I can use to throttle my processing speed when my CPU or GPU temps get too high? I'm not too bad now in the colder weather, but when summer comes along I may be in trouble. My temps average about 10 deg C higher when I am crunching SETI using the optimized apps as opposed to when I am crunching Einstein. The CPU (i7-4770) temp on one of my boxes is getting close to 70 deg C when crunching SETI. I have TThrottle installed on my boxes, but I don't like the way it throttles. I just use it to feed temperature data to BOINC Tasks.

Win7 Ultimate SP1, x64.

Thanks, Ron

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If you are using the stock heatsink then upgrade it as the stock 1 is not very good at controlling heat under heavy loads.

In your motherboard BIOS do you have the CPU fan set for maximum performance.

Does your case provide enough internal ventilation?

Cheers.

If you are using the stock heatsink then upgrade it as the stock 1 is not very good at controlling heat under heavy loads.

I am well above stock cooling, on the i7 CPU I am using a Zalman CNPS9900A cooler. CPU is o/c'd to 4.0 GHz.

In your motherboard BIOS do you have the CPU fan set for maximum performance.

I have the fan curve set to be at 100% at a CPU temp of 60 deg C using Asus AI Suite 3.

Does your case provide enough internal ventilation?

The case side is open and I blow all the dust bunnies out about once a month.

Thanks, Ron

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http://www.efmer.eu/boinc/

Steve

Edit: I missed the part where you already had this.

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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

My temps average about 10 deg C higher when I am crunching SETI using the optimized apps as opposed to when I am crunching Einstein.

That´s is normal, AFAIK E@H uses a lot of memory transfers (who almost not generate heat) diferent of SETI who actualy crunching almost all the time. Nothing to worry about, is the way the program works, just keep your CPU/GPU well ventilated, and fans adjusted to a "turbo mode".

Of course OC adds a significative amount of heat to the equation, but as you say you actualy has a more elaborated cooling device for the CPU than stock.

Instead of use a TThrottle like program i prefear to allow only crunch in less cores than the actual max (50% for example), so a lot less heat is generated on the CPU itself, anyway most of the host crunching performance comes from the GPU itself. In my case i´m radical i don´t do CPU crunch in the hot season (most of the time here).

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(...) anyway most of the host crunching performance comes from the GPU itself. In my case i´m radical i don´t do CPU crunch in the hot season (most of the time here).

AFAIK the GPU also gets hotter in summer time... ;)

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Aloha, Uli

(...) anyway most of the host crunching performance comes from the GPU itself. In my case i´m radical i don´t do CPU crunch in the hot season (most of the time here).

AFAIK the GPU also gets hotter in summer time... ;)

Agree, but it´s a lot easier to cool the GPU than the CPU, just add 2 (in my case >40C and no AC) 12 cm fans above it and blow cold air (ok at >40C not to cold anyway just fresh air) on them, in the case of the hot 690, or taking out the air on the case of the 780 that´s mantain them below 75C at >95% of GPU usage. Anyway as he has a 760 they run cold almost in any condition with the internal fan set at around 80% but he could easely add an aditional fan if needed.

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It gets to the point where OC to 4.0Ghz becomes counter productive if you need to reduce the CPU or tasks due to heat.
A CPU only water cooler are cheap and easy to install. I have basic one and works well, bear in mind that you still get fan noise from the radiator fan also pump noise too.

Thanks for all of the responses!

My GPU temps very rarely get above 60C no matter what I am crunching.

My CPU temps, when I am crunching pure Einstein, never get above 55C.

When Einstein and SETI are mixed, CPU will get up to around 60C.

Crunching pure SETI, my CPU creeps up to around 65C with some peaks around 68C.

If these temps are OK and won't decrease the life of the CPU significantly, I won't worry about it.

If the temps get too high in the summer, I guess I could drop down the o/c a little. :-(

Side note; all temps listed are the highest average readings of the multiple cores.

Thanks, Ron

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I can't directly answer your question, but I refer you to the specifications from Intel for their processors (http://ark.intel.com/). Since you mention you have OCed your i7-4770, I looked up the Tcase value for it. So long as the temperature AT THE CPU COOLER is below 72.72C, your processor can handle it.

I live in Vietnam where the air is often at 40C with high humidity, too. I run my i7-3770k OCed to 4.1Ghz with a 75C limit set in TThrottle. It rarely gets that hot, and my processor Tcase is 67.4C.

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