So basically here is the situation, my Intel Q6600 is overclocked to 3.2ghz with a 1600mhz fsb and sits under water cooling. My concern is that she idles rather cold ie 9/9/7/7 and we seem to be going into a cold winter. Are these temps OK or should I do something to warm up the chip?
So basically here is the situation, my Intel Q6600 is overclocked to 3.2ghz with a 1600mhz fsb and sits under water cooling. My concern is that she idles rather cold ie 9/9/7/7 and we seem to be going into a cold winter. Are these temps OK or should I do something to warm up the chip?
Regards
I'm sure you are using speedfan to check temps
Use Real Temp
@kad: Yip speedfan, CoreTemp doesn't seem to work with my system. I'll try the newest version at home
@Nukemaster, with water cooling it is possible to go below room temp on the CPU as the air is being used to cool off the liquid not the CPU. So if the water can absorb the heat it is possible to go below ambient. Sadly my ambient temps are between 5-15 degrees depending on the time of day. We hit the negatives out here.
At least I ain't using a 45nm. The metal in the high-K might contract from the cold when my room temp hits 0 again... (Yes this place is cold!). Then I'd have some serious problems...
Kad, I checked the version of SpeedFan I'm using (with the same CPU) on my old motherboard. The SpeedFan I have agreed with CoreTemp 0.95 which is generally considered correct. So I think those temps are right but I'll check with RealTemp.
Even water can not go below room temp(unless you are cooling it with something[thermo electric or a compressor]). Water just takes in heat faster then air, but its still dissipated into the room(by way of room temp air passing through the rad). its against the laws of physics to be cooler then its surround environment. Other then that a fridge would not need a compressor to lower its temps it would just use water and a pump.
With you low room temps that would explain everything.
As long as its the latest speedfan it should be fine and accurate(the old ones read 15c too low).
Either way, you should not hurt the chip in any way.
Message edited by nukemaster on 05-23-2008 at 09:51:46 AM
Kad, I checked the version of SpeedFan I'm using (with the same CPU) on my old motherboard. The SpeedFan I have agreed with CoreTemp 0.95 which is generally considered correct. So I think those temps are right but I'll check with RealTemp.
@Nightfall, ok this is a bit of a simplified explaination as how much heat the liquid can transfer is actually measured in watts which is based on the type of liquid, the radiator and the strength of the pump / pressure. The water itself can only be cooled to ambient temperature(lets assume 30 degrees) and can only take heat up to its thermal limit (in my case I think I'll stick to 60 degrees).
So if the processor is idling and only generating 40 degrees for instance and the water can handle 30 degrees being transferred into it while in the CPU block that only leaves 10 degrees on the CPU (provided of course you have a CPU block that can handle it). The water is now at 60 degrees until it hits the radiator where its cooled back down to ambient (30 degrees in this case). In this case it is possible for the CPU (not the water cooling system) to go below room temperature.
Grimmy from what I understand they are programmed in, otherwise the problem shouldn't really exist but as far as I know the CPU doesn't actually know its own TJunction.
The water cannot be heated beyond the temperature of the processor in the same way it cannot be cooled beyond ambient. The CPU ina water cooled system can't drop below the ambient of the location of the radiator without some form of refrigeration.
Heh.. I guess the reason why I'm a lil confused, is when they say RealTemp is more accurate, if it's just programed into the software. RealTemp is a nice tool, but someone might as well make a temp tool that has a tj max of 90C to make the temps look even better.
@milez, not to be nasty or anything against you but if that were the case I could hook up my processor, both of my graphics cards and chipset without the water going over 60 degrees. With that same logic I don't really need a radiator since the water can't go over 80 degrees then.
The water is just a heat transfer mechnism. The more heat it is exposed to the hotter it gets until it reaches either boiling point or saturation point at which point it can't get hotter because it can't absorb more heat.
PS I think some people are miss understanding. I'm not taking my water below ambient, I am however using the water to transfer heat from my CPU to the radiator which drastically reduces the heat sources limitation in relation to the limitation of air cooling.
@Nightfall, ok this is a bit of a simplified explaination as how much heat the liquid can transfer is actually measured in watts which is based on the type of liquid, the radiator and the strength of the pump / pressure. The water itself can only be cooled to ambient temperature(lets assume 30 degrees) and can only take heat up to its thermal limit (in my case I think I'll stick to 60 degrees).
So if the processor is idling and only generating 40 degrees for instance and the water can handle 30 degrees being transferred into it while in the CPU block that only leaves 10 degrees on the CPU (provided of course you have a CPU block that can handle it). The water is now at 60 degrees until it hits the radiator where its cooled back down to ambient (30 degrees in this case). In this case it is possible for the CPU (not the water cooling system) to go below room temperature.
JDocs
The fact is Processor is heat source always generating heat (Non Stop) say 40 degrees
The circulating water is always heated when touching the module seated on processor
When hot water reaches radiator, the air blown at it has the ambient temp.(say 25)
Heat will be transfered from hot water to radiator fins to air till they are equal
Water will go back to processor and get more heat from it till both temps are equal and come back to disipate in air
So secret is in equality
Temp of water can not be more cold than ambient temp
If you have a closed bottle of water on the table in your room with a fan blowing room air on it , Do you think water in the bottle will get more cold than your room temp ??
No of course
The only possible senario is if cooling liquid is not water
If Refrigerant is used running at -10 degrees it is possible, and this is the principale of A/C units
Even using Cold Water cooled up-to 6 degrees will do the job and this is the principale of Central A/C systems in buildings and malls
Grimmy
Someone calibrated SpeedFan following CopuTronix instructions in his sticky and compared the results with RealTemp(which I was very curious to do) and the result was a difference of 1 degree
So you can rely on RealTemp as an accurate program to measure temps.
Message edited by kad on 05-23-2008 at 11:18:13 AM
As soon as the water gets hotter than the CPU, the heat will be transferred TO the CPU. when your water cooling reaches it's limit the water will be too hot and so will the rest of your system.
You can't stick a heating element that only reaches 50C into a pan and expect it to boil.
I've seen CPUs in the negatives with phase change cooling, so you're probably fine.
i think so.
