| Kernel driver coretemp | |
| ====================== | |
| Supported chips: | |
| * All Intel Core family | |
| Prefix: 'coretemp' | |
| CPUID: family 0x6, models 0xe (Pentium M DC), 0xf (Core 2 DC 65nm), | |
| 0x16 (Core 2 SC 65nm), 0x17 (Penryn 45nm), | |
| 0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield) | |
| Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual | |
| Volume 3A: System Programming Guide | |
| http://softwarecommunity.intel.com/Wiki/Mobility/720.htm | |
| Author: Rudolf Marek | |
| Description | |
| ----------- | |
| This driver permits reading temperature sensor embedded inside Intel Core CPU. | |
| Temperature is measured in degrees Celsius and measurement resolution is | |
| 1 degree C. Valid temperatures are from 0 to TjMax degrees C, because | |
| the actual value of temperature register is in fact a delta from TjMax. | |
| Temperature known as TjMax is the maximum junction temperature of processor, | |
| which depends on the CPU model. See table below. At this temperature, protection | |
| mechanism will perform actions to forcibly cool down the processor. Alarm | |
| may be raised, if the temperature grows enough (more than TjMax) to trigger | |
| the Out-Of-Spec bit. Following table summarizes the exported sysfs files: | |
| temp1_input - Core temperature (in millidegrees Celsius). | |
| temp1_max - All cooling devices should be turned on (on Core2). | |
| temp1_crit - Maximum junction temperature (in millidegrees Celsius). | |
| temp1_crit_alarm - Set when Out-of-spec bit is set, never clears. | |
| Correct CPU operation is no longer guaranteed. | |
| temp1_label - Contains string "Core X", where X is processor | |
| number. | |
| The TjMax temperature is set to 85 degrees C if undocumented model specific | |
| register (UMSR) 0xee has bit 30 set. If not the TjMax is 100 degrees C as | |
| (sometimes) documented in processor datasheet. | |
| Appendix A. Known TjMax lists (TBD): | |
| Some information comes from ark.intel.com | |
| Process Processor TjMax(C) | |
| 32nm Core i3/i5/i7 Processors | |
| i7 660UM/640/620, 640LM/620, 620M, 610E 105 | |
| i5 540UM/520/430, 540M/520/450/430 105 | |
| i3 330E, 370M/350/330 90 rPGA, 105 BGA | |
| i3 330UM 105 | |
| 32nm Core i7 Extreme Processors | |
| 980X 100 | |
| 32nm Celeron Processors | |
| U3400 105 | |
| P4505/P4500 90 | |
| 45nm Xeon Processors 5400 Quad-Core | |
| X5492, X5482, X5472, X5470, X5460, X5450 85 | |
| E5472, E5462, E5450/40/30/20/10/05 85 | |
| L5408 95 | |
| L5430, L5420, L5410 70 | |
| 45nm Xeon Processors 5200 Dual-Core | |
| X5282, X5272, X5270, X5260 90 | |
| E5240 90 | |
| E5205, E5220 70, 90 | |
| L5240 70 | |
| L5238, L5215 95 | |
| 45nm Atom Processors | |
| D525/510/425/410 100 | |
| Z560/550/540/530P/530/520PT/520/515/510PT/510P 90 | |
| Z510/500 90 | |
| N475/470/455/450 100 | |
| N280/270 90 | |
| 330/230 125 | |
| 45nm Core2 Processors | |
| Solo ULV SU3500/3300 100 | |
| T9900/9800/9600/9550/9500/9400/9300/8300/8100 105 | |
| T6670/6500/6400 105 | |
| T6600 90 | |
| SU9600/9400/9300 105 | |
| SP9600/9400 105 | |
| SL9600/9400/9380/9300 105 | |
| P9700/9600/9500/8800/8700/8600/8400/7570 105 | |
| P7550/7450 90 | |
| 45nm Core2 Quad Processors | |
| Q9100/9000 100 | |
| 45nm Core2 Extreme Processors | |
| X9100/9000 105 | |
| QX9300 100 | |
| 45nm Core i3/i5/i7 Processors | |
| i7 940XM/920 100 | |
| i7 840QM/820/740/720 100 | |
| 45nm Celeron Processors | |
| SU2300 100 | |
| 900 105 | |
| 65nm Core2 Duo Processors | |
| Solo U2200, U2100 100 | |
| U7700/7600/7500 100 | |
| T7800/7700/7600/7500/7400/7300/7250/7200/7100 100 | |
| T5870/5670/5600/5550/5500/5470/5450/5300/5270 100 | |
| T5250 100 | |
| T5800/5750/5200 85 | |
| L7700/7500/7400/7300/7200 100 | |
| 65nm Core2 Extreme Processors | |
| X7900/7800 100 | |
| 65nm Core Duo Processors | |
| U2500/2400 100 | |
| T2700/2600/2450/2400/2350/2300E/2300/2250/2050 100 | |
| L2500/2400/2300 100 | |
| 65nm Core Solo Processors | |
| U1500/1400/1300 100 | |
| T1400/1350/1300/1250 100 | |
| 65nm Xeon Processors 5000 Quad-Core | |
| X5000 90-95 | |
| E5000 80 | |
| L5000 70 | |
| L5318 95 | |
| 65nm Xeon Processors 5000 Dual-Core | |
| 5080, 5063, 5060, 5050, 5030 80-90 | |
| 5160, 5150, 5148, 5140, 5130, 5120, 5110 80 | |
| L5138 100 | |
| 65nm Celeron Processors | |
| T1700/1600 100 | |
| 560/550/540/530 100 |