Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver coretemp 2 ====================== 3 4 Supported chips: 5 * All Intel Core family 6 Prefix: 'coretemp' 7 CPUID: family 0x6, models 0xe (Pentium M DC), 0xf (Core 2 DC 65nm), 8 0x16 (Core 2 SC 65nm), 0x17 (Penryn 45nm), 9 0x1a (Nehalem), 0x1c (Atom), 0x1e (Lynnfield), 10 0x26 (Tunnel Creek Atom), 0x27 (Medfield Atom), 11 0x36 (Cedar Trail Atom) 12 Datasheet: Intel 64 and IA-32 Architectures Software Developer's Manual 13 Volume 3A: System Programming Guide 14 http://softwarecommunity.intel.com/Wiki/Mobility/720.htm 15 16 Author: Rudolf Marek 17 18 Description 19 ----------- 20 This driver permits reading the DTS (Digital Temperature Sensor) embedded 21 inside Intel CPUs. This driver can read both the per-core and per-package 22 temperature using the appropriate sensors. The per-package sensor is new; 23 as of now, it is present only in the SandyBridge platform. The driver will 24 show the temperature of all cores inside a package under a single device 25 directory inside hwmon. 26 27 Temperature is measured in degrees Celsius and measurement resolution is 28 1 degree C. Valid temperatures are from 0 to TjMax degrees C, because 29 the actual value of temperature register is in fact a delta from TjMax. 30 31 Temperature known as TjMax is the maximum junction temperature of processor, 32 which depends on the CPU model. See table below. At this temperature, protection 33 mechanism will perform actions to forcibly cool down the processor. Alarm 34 may be raised, if the temperature grows enough (more than TjMax) to trigger 35 the Out-Of-Spec bit. Following table summarizes the exported sysfs files: 36 37 All Sysfs entries are named with their core_id (represented here by 'X'). 38 tempX_input - Core temperature (in millidegrees Celsius). 39 tempX_max - All cooling devices should be turned on (on Core2). 40 tempX_crit - Maximum junction temperature (in millidegrees Celsius). 41 tempX_crit_alarm - Set when Out-of-spec bit is set, never clears. 42 Correct CPU operation is no longer guaranteed. 43 tempX_label - Contains string "Core X", where X is processor 44 number. For Package temp, this will be "Physical id Y", 45 where Y is the package number. 46 47 On CPU models which support it, TjMax is read from a model-specific register. 48 On other models, it is set to an arbitrary value based on weak heuristics. 49 If these heuristics don't work for you, you can pass the correct TjMax value 50 as a module parameter (tjmax). 51 52 Appendix A. Known TjMax lists (TBD): 53 Some information comes from ark.intel.com 54 55 Process Processor TjMax(C) 56 57 22nm Core i5/i7 Processors 58 i7 3920XM, 3820QM, 3720QM, 3667U, 3520M 105 59 i5 3427U, 3360M/3320M 105 60 i7 3770/3770K 105 61 i5 3570/3570K, 3550, 3470/3450 105 62 i7 3770S 103 63 i5 3570S/3550S, 3475S/3470S/3450S 103 64 i7 3770T 94 65 i5 3570T 94 66 i5 3470T 91 67 68 32nm Core i3/i5/i7 Processors 69 i7 2600 98 70 i7 660UM/640/620, 640LM/620, 620M, 610E 105 71 i5 540UM/520/430, 540M/520/450/430 105 72 i3 330E, 370M/350/330 90 rPGA, 105 BGA 73 i3 330UM 105 74 75 32nm Core i7 Extreme Processors 76 980X 100 77 78 32nm Celeron Processors 79 U3400 105 80 P4505/P4500 90 81 82 32nm Atom Processors 83 S1260/1220 95 84 S1240 102 85 Z2460 90 86 Z2760 90 87 D2700/2550/2500 100 88 N2850/2800/2650/2600 100 89 90 45nm Xeon Processors 5400 Quad-Core 91 X5492, X5482, X5472, X5470, X5460, X5450 85 92 E5472, E5462, E5450/40/30/20/10/05 85 93 L5408 95 94 L5430, L5420, L5410 70 95 96 45nm Xeon Processors 5200 Dual-Core 97 X5282, X5272, X5270, X5260 90 98 E5240 90 99 E5205, E5220 70, 90 100 L5240 70 101 L5238, L5215 95 102 103 45nm Atom Processors 104 D525/510/425/410 100 105 K525/510/425/410 100 106 Z670/650 90 107 Z560/550/540/530P/530/520PT/520/515/510PT/510P 90 108 Z510/500 90 109 N570/550 100 110 N475/470/455/450 100 111 N280/270 90 112 330/230 125 113 E680/660/640/620 90 114 E680T/660T/640T/620T 110 115 E665C/645C 90 116 E665CT/645CT 110 117 CE4170/4150/4110 110 118 CE4200 series unknown 119 CE5300 series unknown 120 121 45nm Core2 Processors 122 Solo ULV SU3500/3300 100 123 T9900/9800/9600/9550/9500/9400/9300/8300/8100 105 124 T6670/6500/6400 105 125 T6600 90 126 SU9600/9400/9300 105 127 SP9600/9400 105 128 SL9600/9400/9380/9300 105 129 P9700/9600/9500/8800/8700/8600/8400/7570 105 130 P7550/7450 90 131 132 45nm Core2 Quad Processors 133 Q9100/9000 100 134 135 45nm Core2 Extreme Processors 136 X9100/9000 105 137 QX9300 100 138 139 45nm Core i3/i5/i7 Processors 140 i7 940XM/920 100 141 i7 840QM/820/740/720 100 142 143 45nm Celeron Processors 144 SU2300 100 145 900 105 146 147 65nm Core2 Duo Processors 148 Solo U2200, U2100 100 149 U7700/7600/7500 100 150 T7800/7700/7600/7500/7400/7300/7250/7200/7100 100 151 T5870/5670/5600/5550/5500/5470/5450/5300/5270 100 152 T5250 100 153 T5800/5750/5200 85 154 L7700/7500/7400/7300/7200 100 155 156 65nm Core2 Extreme Processors 157 X7900/7800 100 158 159 65nm Core Duo Processors 160 U2500/2400 100 161 T2700/2600/2450/2400/2350/2300E/2300/2250/2050 100 162 L2500/2400/2300 100 163 164 65nm Core Solo Processors 165 U1500/1400/1300 100 166 T1400/1350/1300/1250 100 167 168 65nm Xeon Processors 5000 Quad-Core 169 X5000 90-95 170 E5000 80 171 L5000 70 172 L5318 95 173 174 65nm Xeon Processors 5000 Dual-Core 175 5080, 5063, 5060, 5050, 5030 80-90 176 5160, 5150, 5148, 5140, 5130, 5120, 5110 80 177 L5138 100 178 179 65nm Celeron Processors 180 T1700/1600 100 181 560/550/540/530 100