CPU Temperature Poll

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Profile Westsail and *Pyxey*
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Message 912495 - Posted: 28 Jun 2009, 23:36:04 UTC
Last modified: 28 Jun 2009, 23:39:18 UTC

Athlon 4200+, Zalman air cooled OC @ 2.66GHz. Antec Nine Hundred case.
Crunches 24/7 only reboot for updates etc. GPU's are both heavily OC. YMMV

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"The most exciting phrase to hear in science, the one that heralds new discoveries, is not Eureka! (I found it!) but rather, 'hmm... that's funny...'" -- Isaac Asimov
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Message 912612 - Posted: 29 Jun 2009, 14:21:44 UTC

I have a "hot" room here is a temperature chart from a UPS sensor for the room everything in F:



Here is an air cooled PC in that room:



Here is a Mac in that same room:




Most of the PCs run around 150 - 165F (65 - 73C)
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Message 912617 - Posted: 29 Jun 2009, 14:38:26 UTC - in response to Message 912612.  

I have a "hot" room here is a temperature chart from a UPS sensor for the room everything in F:


Stop making me jealous!

I'd like a "cool" room that was that temperature.

Flying high with Team Sicituradastra.
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Message 912636 - Posted: 29 Jun 2009, 15:33:38 UTC

Just to toss in a couple of more values:

The air temp in the room varies from 24C to 30C.

http://setiathome.berkeley.edu/show_host_detail.php?hostid=4913319
This computer is in an Antec 900 case, running a Zalman 9500 cooler. All fan speeds set to low. All speeds are stock, and I'm running optimized applications for SETI and Milkyway. Currently this computer crunches GPUGrid on the 8800GT and Milkyway on the CPU cores. It runs 30C idle and the CPU's peak at 52C after 24+ hours of 100% usage. The GPU runs at 40C idle and peaks at 59C under full load at 50-75% fan speed (I use Riva Tuner to automatically adjust fan speed based on GPU temp; it won't kick 100% fan speed until it exceeds 65C.) Without fan speed adjustment, this card gets up to 70C but has never balked.


http://setiathome.berkeley.edu/show_host_detail.php?hostid=4236302
This computer is in a Cooler Master Centurion case, with a stock cooler and stock speeds. It's running optimized applications for Seti (CPU) and Milkyway (CPU), and the stock SETI Cuda application. The CPU's idle at 45C and peak at 64C after 24+ hours of 100% usage. The GPU runs at 55C idle and peaks at 69C under a full load at 75-100% fan speed (again, using Riva to auto adjust the speeds based on temp; it kicks to 100% at 65C or higher.) Without fan speed adjustment, this card has gone as high as 82C and forced a shutdown of the machine.

Both machines have been crunching solidly in their current state for 6 months, aside from OS refreshes on the first one as I went from Vista to Win7 Beta to Win7 RC.

In winter these temps will all drop 10C.

The first machine is about to give its graphics card to the second machine, while picking up a pair of EVGA GTX275's. I'll repost with temps once I get the cards in a few days and see what the differences are. I expect the 8800 in the 2nd case will run quite a bit hotter, as that case does not have half the airflow the Antec 900 does. Not sure what the 275's will do; it's an experiment! ;)
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Message 912700 - Posted: 29 Jun 2009, 20:35:21 UTC

Hi, it's quite warm to hot 25C-28C, now 23C,
which is hot for Holland and turned one host, to stock.
.
QX9650 went from 3,7G to 3,5GHz.
My Pentium4D 820 to 60%.
Turn it up again, after this heatwave
Have a great summer and keep on crunching . . .

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Message 912848 - Posted: 30 Jun 2009, 8:38:24 UTC
Last modified: 30 Jun 2009, 8:43:40 UTC

Hey everyone.

I am using a no name case for my desktop, so I don't feel any guilt about putting a drill to it :) I made a hole for a 120 mm fan at the front bottom of the case, and a smaller one for a 80 mm fan just above where floppy drive used to be. They are both blowing air in at low RPM.

80 mm fan, I mentioned above, blows the air directly towards a Zalman 9700. At the moment my case temperature is 28°C, both cores are at 100% and reported CPU temperature is 47°C.

For CUDA workunits I use a 8800 GT. At first, when GPU crunching became available, I used it with a stock fan, however it heated up quite a bit, and the card itself drove me mad when RivaTuner throttled up it's fan to full. Eventually I took it apart, and installed ArcticCooling's Accelero S2 passive cooler. For a good measure I strapped on a Scythe GentleTyphoon 800 RPM fan using some zip ties. As a result, currently my GPU heats up to about 46°C at full load.

Both CPU and GPU run at their stock speeds, and BOINC is running optimized apps.
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Message 913221 - Posted: 2 Jul 2009, 8:55:53 UTC - in response to Message 912401.  

Glad to here it's doing better for you. Don't forget the break in period as mentioned by gizbar, which should also bring it down a bit in time.

This break-in will occur during the normal use of the computer as long as the computer is turned off from time to time and the interface is allowed to cool to room temperature. Once the break-in is complete, the computer can be left on if desired.


@ Gizbar and Byron

Follow up;

I did the break in periods as suggested and temps are now down to the 47-49 range ... as did the local weather drop down again to the 17 - 22 range this past week.
Rick
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Message 913236 - Posted: 2 Jul 2009, 10:25:48 UTC - in response to Message 912848.  

Hey everyone.

I am using a no name case for my desktop, so I don't feel any guilt about putting a drill to it :) I made a hole for a 120 mm fan at the front bottom of the case, and a smaller one for a 80 mm fan just above where floppy drive used to be. They are both blowing air in at low RPM.

80 mm fan, I mentioned above, blows the air directly towards a Zalman 9700. At the moment my case temperature is 28°C, both cores are at 100% and reported CPU temperature is 47°C.

For CUDA workunits I use a 8800 GT. At first, when GPU crunching became available, I used it with a stock fan, however it heated up quite a bit, and the card itself drove me mad when RivaTuner throttled up it's fan to full. Eventually I took it apart, and installed ArcticCooling's Accelero S2 passive cooler. For a good measure I strapped on a Scythe GentleTyphoon 800 RPM fan using some zip ties. As a result, currently my GPU heats up to about 46°C at full load.

Both CPU and GPU run at their stock speeds, and BOINC is running optimized apps.


The biggest problem I've had with my no name cases is the case fan mount areas. The airflow holes punched in the case are very ineffective at passing air and the fan just circulates about 95% of the air behind the panel with very little passing through. I've now modded mine to cut the metalwork away leaving just the fan screw mount holes and fitted a fanguard instead to avoid anything accidentally getting in the fan blades - you can immediately feel the improvement in airflow. (Ideally done with nothing in the case of course to avoid the metal filings getting in places they shouldn't ..........)

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Message 913260 - Posted: 2 Jul 2009, 13:22:29 UTC - in response to Message 913236.  


The biggest problem I've had with my no name cases is the case fan mount areas. The airflow holes punched in the case are very ineffective at passing air and the fan just circulates about 95% of the air behind the panel with very little passing through. I've now modded mine to cut the metalwork away leaving just the fan screw mount holes and fitted a fanguard instead to avoid anything accidentally getting in the fan blades - you can immediately feel the improvement in airflow. (Ideally done with nothing in the case of course to avoid the metal filings getting in places they shouldn't ..........)



My case came with a square hole cut in its metal structure (lower front) and it already had holes for mounting a 120 mm fan. Plastic mask that sits on top of that, however, didn't even look like a fan was supposed to be installed there. Anyway I had to make the hole myself. It seemed to be a bit of a chore (since I never seem to have the right tools for whatever I'm doing at that moment), but in the end it turned out just fine. I used a hot glue gun to secure the fanguard to the inner side of the plastic mask, and it's been sitting there, nice and tight, for about 4 years now. The only thing I need to do is pass over it with a vacuum cleaner every 10 days or so to pick up the dust bunnies forming on it.

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Message 913282 - Posted: 2 Jul 2009, 14:49:04 UTC - in response to Message 913260.  


My case came with a square hole cut in its metal structure (lower front) and it already had holes for mounting a 120 mm fan.
Much better idea.


since I never seem to have the right tools for whatever I'm doing at that moment

You must be an engineer? What's wrong with the universal tool - the hammer - anyway :-)

I really should get around to cutting a corresponding whole in the front cover also to improve the inlet air flow. I've never spent a lot of money on cases perhaps if I went a bit more upmarket all theses things would be catered for.

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Message 913373 - Posted: 2 Jul 2009, 19:12:18 UTC - in response to Message 913282.  


My case came with a square hole cut in its metal structure (lower front) and it already had holes for mounting a 120 mm fan.
Much better idea.


since I never seem to have the right tools for whatever I'm doing at that moment

You must be an engineer? What's wrong with the universal tool - the hammer - anyway :-)

I really should get around to cutting a corresponding whole in the front cover also to improve the inlet air flow. I've never spent a lot of money on cases perhaps if I went a bit more upmarket all theses things would be catered for.



I suppose it depends on what you mean by "upmarket". I've been using Cooler Master Elite 330/331 cases for a few years now and for £30 or so (PSU not included) they're pretty good. Screwless mounting of drives, the whole of the front panel is mesh (with foam behind individual panels, acting as filters), mounting points for fans upto 120mm at, both the bottom-front and mid-rear and a side mounted 'horn' that takes heat away from a suitably mounted CPU cooler. In my case, I removed the 'horn' as either HSF would not fit otherwise and directed the flows of the CPU fan, on both PCs, straight into the rear (extractor) fan. My PC (the E6550) probably runs cooler, in spite of using the paste that came with the HSF, due to the HSF being a Scythe Ninja 2 and replacing the standard Scythe fan with a 120mm Nexus PWM fan. Next month, I'll be replacing all the other 120mm fans with 120mm Nexus PWM units.

As you are in the UK, you could try a company in Manchester, called, Aria, for cases and fans - I've been dealing with them for about 15 years and they've been excellent.




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Message 913434 - Posted: 3 Jul 2009, 0:22:55 UTC

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Message 913452 - Posted: 3 Jul 2009, 1:53:43 UTC

I'll throw in my 2 cents:

Keep in mind that thermal compound, in general, does dry out after 1-2 years and needs to be cleaned off and re-applied.

That goes for everything up to Arctic Silver.

Some people go nuts and re-apply every 6 months or so.

The newer ceramic stuff claims to last longer than older compounds.
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Message 913461 - Posted: 3 Jul 2009, 2:18:26 UTC
Last modified: 3 Jul 2009, 2:19:40 UTC

Thermal Goop Scoop:

Try using Vaseline (petroleum jelly to you foreigners) for thermal goop. It really works (I have several machines using it 24/7 - AMD X2s and octocores).

It is easy to apply - just use a smidgin per CPU - and clean up - a tissue does it.
Never dries out.
Never runs out (must be some surface tension thingy working there).

Keeps CPUs working cool - Opty quad core 2352s using stock cooler or old Zalman 7000 AlCu never run above 50-52C or so under SETI at 100% across all 4 cores. Must fill those microscopic air gaps perfectly...

And it is cheap!!!
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Message 913559 - Posted: 3 Jul 2009, 9:23:40 UTC - in response to Message 913373.  


My case came with a square hole cut in its metal structure (lower front) and it already had holes for mounting a 120 mm fan.
Much better idea.


since I never seem to have the right tools for whatever I'm doing at that moment

You must be an engineer? What's wrong with the universal tool - the hammer - anyway :-)

I really should get around to cutting a corresponding whole in the front cover also to improve the inlet air flow. I've never spent a lot of money on cases perhaps if I went a bit more upmarket all theses things would be catered for.



I suppose it depends on what you mean by "upmarket". I've been using Cooler Master Elite 330/331 cases for a few years now and for £30 or so (PSU not included) they're pretty good. Screwless mounting of drives, the whole of the front panel is mesh (with foam behind individual panels, acting as filters), mounting points for fans upto 120mm at, both the bottom-front and mid-rear and a side mounted 'horn' that takes heat away from a suitably mounted CPU cooler. In my case, I removed the 'horn' as either HSF would not fit otherwise and directed the flows of the CPU fan, on both PCs, straight into the rear (extractor) fan. My PC (the E6550) probably runs cooler, in spite of using the paste that came with the HSF, due to the HSF being a Scythe Ninja 2 and replacing the standard Scythe fan with a 120mm Nexus PWM fan. Next month, I'll be replacing all the other 120mm fans with 120mm Nexus PWM units.

As you are in the UK, you could try a company in Manchester, called, Aria, for cases and fans - I've been dealing with them for about 15 years and they've been excellent.





Most of mine cost less than that amount (cheapskate!) so you get what you pay for! Does the Elite have a proper big square hole for the fan mount or the punched out small round holes that pretend to be a grill? Aria does ring a bell I'll take a look at them.
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Message 914303 - Posted: 5 Jul 2009, 10:32:18 UTC

Update: Just re-installed my 2nd computer (the 9850) into an Antec 300 case and added a couple of 120mm intake fans, bumped it up to 2.8Ghz from 2.6Ghz (I knew CPU would do this from old motherboard) and it is idling at 33c and under load is now 41c. It is cooler downstairs tho (roughly 22c at the moment), but the change in temp from the other case is great! It also runs quieter than the old case. Think that case is going to the dump, :-))

(For reference - Old idle was 42-44c and load was 56-58c, running 9850 at 2.6Ghz. Got too hot at 2.8). So now load temp at higher clock is lower than old idle on that system! Just want some work for the new one tho... Got a few cuda yesterday, but ripped through them in no time.

regards, Gizbar.




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Message 914336 - Posted: 5 Jul 2009, 14:59:14 UTC

78f in the crunching den right now.......
Window AC is doing all it can.

And the Frozen Nehi is still showing -31.5c on the Fluke meter at the evap head.
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Message 914408 - Posted: 5 Jul 2009, 18:39:44 UTC

hi

My GPu is posting 78C its max is 113C so well within the limits :) my CPU is posting 74C
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Message 914461 - Posted: 5 Jul 2009, 20:39:35 UTC - in response to Message 914408.  

John thats high even for an intel. It sounds like you might want some extra cooling


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