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Mike Send message Joined: 17 Feb 01 Posts: 34253 Credit: 79,922,639 RAC: 80 |
BTW, what temps are typical for Core2 E6420? I see ~65C and run TThrottle to not go too higher... BOINC only on 50% CPU... Intel Core 2 Duo Intel core 2 Duo (Conroe E4300, E4400, E6300, E6400) 61.4°C Intel Core 2 Duo (Conroe E4500, E4600, E4700) 73.3°C Intel Core 2 Duo (Conroe E6320, E6420, E6540, E6550, E6600, E6700, E6750, E6850) 60.1°C Intel Core 2 Duo (Wolfdale) 72.4°C Mobile Core 2 Duo 100°C Intel Core 2 Extreme Intel Core 2 Extreme (Conroe) 60.4°C Intel Core 2 Extreme (Kentsfield Q6700) 71°C Intel Core 2 Extreme (Kentsfield Q6600) 62.2°C Intel Core 2 Extreme (Kentsfield QX6700, QX6850) 64.5°C Intel Core 2 Extreme (Kentsfield QX6800) 54.8°C Intel Core 2 Extreme (Yorkfiled Q9300, Q9450, Q9550) 71.4°C Intel Core 2 Extreme (Yorkfield QX9650) 64.5°C Intel Core 2 Extreme (Yorkfield QX9770) 55.5°C Intel Core 2 Extreme (Hypertown QX9775) 63°C With each crime and every kindness we birth our future. |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
BTW, what temps are typical for Core2 E6420? I see ~65C and run TThrottle to not go too higher... BOINC only on 50% CPU... Is that CPU temp or CPU core temp? As Mike stated CPU temp limit should be 60.1ºC. If I remember correctly core temps are allowed up to 90ºC, but should probably double check that. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
BTW, what temps are typical for Core2 E6420? I see ~65C and run TThrottle to not go too higher... BOINC only on 50% CPU... It's temp that TThrottle shows.... |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
BTW, what temps are typical for Core2 E6420? I see ~65C and run TThrottle to not go too higher... BOINC only on 50% CPU... I am not sure what TThrottle is displaying. It says core temp but that does not seem to be the same as other software displays. Thermal software comparison. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
BTW, what temps are typical for Core2 E6420? I see ~65C and run TThrottle to not go too higher... BOINC only on 50% CPU... Core Temp and TThrottle read the same (internal in the CPU core) sensor. The value that sensor gives is offset from TjMax. http://www.alcpu.com/CoreTemp/howitworks.html "Intel defines a certain Tjunction temperature for the processor. This value is usually in the range between 85°C and 105°C. In the later generation of processors, starting with Nehalem, the exact Tjunction Max value is available for software to read in an MSR (short for Model Specific Register). A different MSR contains the temperature data. The data is represented as a Delta in °C between current temperature and Tjunction. So the actual temperature is calculated like this 'Core Temp = Tjunction - Delta'" So the program must know the right TjMax In your case TThrottle thinks the TjMax is 100ºC (so the temps shown are 15ºC higher!) There is setting in TThrottle (Expert tab) to manually change the TjMax if you are confident that it have to be 85ºC Since particular program may be wrong it is good to use several programs (as you do): http://setiathome.berkeley.edu/forum_thread.php?id=59292 Processor Electrical Specifications (V, A, W, ºC) http://mysite.verizon.net/pchardwarelinks/elec.htm  - ALF - "Find out what you don't do well ..... then don't do it!" :)  |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
Hm, why TThrottle not read corresponding MSR for correct Tjunction value?... |
S@NL - eFMer - efmer.com/boinc Send message Joined: 7 Jun 99 Posts: 512 Credit: 148,746,305 RAC: 0 |
Hm, why TThrottle not read corresponding MSR for correct Tjunction value?... It does, but this is a relative value. And.... Intel doesn't document the Tjunction setpoint that is normally 100C. But there are few CPU's that use 85C or 105C. Some CPU's may have defective temperature chips, or they may be a bit off. The best way is, to check the case temperature. TThrottle reports the die temperature and that should be close to 5C higher. TThrottle Control your temperatures. BoincTasks The best way to view BOINC. Anza Borrego Desert hiking. |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
So you say TThrottle reads both MSRs? "In the later generation of processors, starting with Nehalem, the exact Tjunction Max value is available for software to read in an MSR (short for Model Specific Register). A different MSR contains the temperature data. The data is represented as a Delta in °C between current temperature and Tjunction."  - ALF - "Find out what you don't do well ..... then don't do it!" :)  |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
It would be convenient then if TThrottle could report case temp too for comparison. All needed tools in one app :) |
S@NL - eFMer - efmer.com/boinc Send message Joined: 7 Jun 99 Posts: 512 Credit: 148,746,305 RAC: 0 |
1) All MSR's depending on the nr of real cores. 2) Must check. TThrottle Control your temperatures. BoincTasks The best way to view BOINC. Anza Borrego Desert hiking. |
S@NL - eFMer - efmer.com/boinc Send message Joined: 7 Jun 99 Posts: 512 Credit: 148,746,305 RAC: 0 |
It would be convenient then if TThrottle could report case temp too for comparison. All needed tools in one app :) Way too much work. TThrottle Control your temperatures. BoincTasks The best way to view BOINC. Anza Borrego Desert hiking. |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
It would be convenient then if TThrottle could report case temp too for comparison. All needed tools in one app :) SIV 'System Information Viewer' reports both temps (and many other values) http://www.rh-software.com/ It is hard to implement as the program have to know many different sensor chips used on motherboards. And every motherboard uses somehow proprietary solution (connects sensor chip's inputs to different hardware) - there is no standard AFAIK for how the different sensor chips have to be used/connected on motherboards. Â - ALF - "Find out what you don't do well ..... then don't do it!" :) Â |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
So you say TThrottle reads both MSRs? By "both MSRs" I mean: A) MSR containing Tjunction Max (one constant value for the given CPU) B) MSR (or MSRs if many cores) containing Delta/offset to TjMax (dynamic value(s)) Â - ALF - "Find out what you don't do well ..... then don't do it!" :) Â |
S@NL - eFMer - efmer.com/boinc Send message Joined: 7 Jun 99 Posts: 512 Credit: 148,746,305 RAC: 0 |
No, but I will try to implementation it in one of the new releases. TThrottle Control your temperatures. BoincTasks The best way to view BOINC. Anza Borrego Desert hiking. |
SciManStev Send message Joined: 20 Jun 99 Posts: 6651 Credit: 121,090,076 RAC: 0 |
My motherboard reports case temperature. When I started using TThrottle on this rig, I had to adjust the Tjunction at high load so that TThrottle reported the same temperature as the motherboard. I ended up with 85°C as pointed out earlier. The two only match up at high load, which is exactly what I want. I never have to worry about my 980 CPU overheating, even at over 4.2 GHz of over clock. This is a wonderful tool, and I consider it a necessity. Thank you Fred! Steve Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
My motherboard reports case temperature. In which program? Does program say "CPU case temperature" and which sensor (e.g. Winbond) it uses for reading? When I started using TThrottle on this rig, I had to adjust the Tjunction at high load so that TThrottle reported the same temperature as the motherboard. I ended up with 85°C as pointed out earlier. The two only match up at high load, which is exactly what I want. As you use Intel CPU - Intel defines Tjunction Max temperature (which is the Max allowed internal in-the-CPU-core temperature). You have to use that (not CPU case temperature) as TThrottle reads exactly that internal in-the-CPU-core temperature and Intel wants exactly that internal in-the-CPU-core temperature to not exceed the Intel-defined Tjunction Max temperature. CoreTemp and TThrottle have to show the same values at all temperatures as they read the same value. Use e.g. this site to check the Tjunction Max of your CPU (Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz): Processor Electrical Specifications (V, A, W, ºC) http://mysite.verizon.net/pchardwarelinks/elec.htm (AMD defines Mac CPU case temperature)  - ALF - "Find out what you don't do well ..... then don't do it!" :)  |
SciManStev Send message Joined: 20 Jun 99 Posts: 6651 Credit: 121,090,076 RAC: 0 |
Its an ASUS Rampage 2 Extreme, and I use the LCD display that came with it. The results are the same as what Asus Probe reports, but with the LCD display, I don't need the overhead of Asus Probe. In earlier motherboards with Asus Probe, within 10 seconds of starting to crunch, Asus Probe let out audible warnings that I was overheating. This was with stock cooling, and at stock speeds. It was that that drove me to water cooling, as I know how imoportant keeping the temperatures down is. At the moment I am running at 4.2 GHz, with my coolant temperature showing 14.4°C, and the LCD display reporting my CPU temp at 51°C. Steve Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website |
SciManStev Send message Joined: 20 Jun 99 Posts: 6651 Credit: 121,090,076 RAC: 0 |
That's a good site BilBg! Here is what I found for my processor. Thank you for that info! Core i7 (Gulftown) Socket 1366 Core Voltage Vmax Max. Core Amp. Thermal Design Power Max. Cover Temp. Core i7 980X (6-core 3.33GHz - 6x 256KB - 12MB L3) ?V (0.8V~1.3V) 1.4V 145A 130W 67.9° C I knew about the 67.9°C cover temp, and that's what I adjusted to. This has been running at these speeds for about a year. My core voltage is 1.482 according to CPU-Z. The BIOS core voltage is set to 1.45 VDC Steve Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
I took the time to check now and see that Intel changed the way it defines the Max temp for Core i7 CPUs to Max. Cover Temp. (the same AMD used/use) (or maybe Intel now defines both Max. Cover Temp. and TjMax?) Â - ALF - "Find out what you don't do well ..... then don't do it!" :) Â |
BilBg Send message Joined: 27 May 07 Posts: 3720 Credit: 9,385,827 RAC: 0 |
I knew about the 67.9°C cover temp I wonder how they come with values such as 67.9°C - did they expect that if CPU cover temp becomes 68.0°C the CPU will explode?? :) My CPU (AMD Athlon(tm) 64 Processor 3500+, Athlon 64 3500+ (Orleans) [DH-F2]) have (AMD defined) Max CPU case temperature of 70°C In TThrottle (Expert tab) is shown/used the default [70°C] "Tjunction Temperature" (TThrottle says I can raise this (manually) +5 to 75°C - as 70°C is the Max CPU case temperature and it is expected that when the CPU case is at 70°C the internal temperature will be e.g. 75°C I didn't change the default [70°C] (AMD CPUs temperature reading is not affected by setting of TjMax - the formula to calculate the "real" temperature of CPU core do not use TjMax value)) I use the starting point for Temperature Throttle ("Set Core") of 55°C (air stock cooling - "Box" CPU bundle (CPU + AMD labeled Fan/Heatsink)) What value do you use for "Set Core"? (in case e.g. cooling pump dies) Edit: And run Core Temp and Real Temp: http://setiathome.berkeley.edu/forum_thread.php?id=59292 ... see what they report for TjMax and set that value in TThrottle ! If TThrottle do not know the right TjMax it can't calculate the right CPU core temperature! E.g.: if you now have set in TThrottle TjMax=80 (I don't know the proper/needed value) and TThrottle shows the CPU cores at about 51°C if you set TjMax=60 then TThrottle will show 31°C and will think the CPU is very cool. So set the right value for TjMax! (it is NOT 67.9°C !) (TThrottle can't read the sensor on the mainboard that measures the external socket/CPU case temperature!)  - ALF - "Find out what you don't do well ..... then don't do it!" :)  |
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