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- MBProbe
- Technical Info
- Copyright 1998-99 Jonathan Teh Soon Yew
- http://web.bham.ac.uk/jst829/mbprobe/
-
- Motherboards
- ------------
- Most motherboards will work on the default MBProbe settings for voltage and
- temperature sensors. The following lists some exceptions:
- (Look for the sensor detected, then look for your board under that section)
- If your board uses non-default settings, please mail me about it. Thanks.
-
- o GL518SM
- Aopen boards
- MB Temp: None CPU Temp: GL518SM:1
- Motherboard temperature offset: -4 C
-
- o LM75
- Pentium MMX Mobile Module (includes mobile 430TX chipset)
- MB Temp: None CPU Temp: LM75:0
-
- o LM78/79
- All boards should set CPU temperature to "None" except:
- Tekram P6B40-A4X
- MB Temp: LM78:1 CPU Temp: LM78:2
- Select 'LM78' voltage divider
- CPU temperature reading is accurate only in the 23-78C range
-
- o LM80
- Voltages are adjusted for the QDI Brilliant IS.
- If you get incorrect voltages, please report it.
-
- o MAX1617(A), ADM1020, ADM1021, THMC10, LM84
- For all systems, setting without R indicates temperature of the chip itself
- while the setting with R indicates temperature from an external diode, such
- as the one in the Pentium II/III.
- Mobile Pentium II
- MB Temp: None CPU Temp: MAX1617:8R
- Pentium II Mobile Module (includes mobile 440BX chipset)
- MB Temp: MAX1617:9 CPU Temp: MAX1617:9R
- Pentium II/III Xeon
- MB Temp: (see mobo) CPU Temp: MAX1617:?R
-
- o SiS5595
- All boards should set CPU temperature to "None".
- Elite P5SS-ME
- MB Temp: SiS5595:2 CPU Temp: None
- Select 'LM78' voltage divider
- PC-Chips M590
- Select 'Alternate' voltage order
-
- o VT82C686A
- All boards:
- MB Temp: VT82686A:3 CPU Temp: VT82686A:1
- All temperature readings are accurate only in the 0-80C range
-
- o W83781D
- All boards should use default settings except:
- Elite, Epox boards
- MB Temp: W83781D:3 CPU Temp: W83781D:2
-
- o W83782D
- Abit BX6 rev 2
- MB Temp: W83782D:1 CPU Temp: W83782D:2 (CPU thermal diode)
- Enable CPU thermal diode on Sensor:2
- CPU Temp: W83782D:3 (thermistor)
- Abit BP6
- MB Temp: W83782D:3 CPU1 Temp: W83782D:2 CPU2 Temp: W83782D:1
- Abit BM6, ZM6
- MB Temp: W83782D:3 CPU Temp: W83782D:2
- Gigabyte 6BXE
- MB Temp: W83782D:1 CPU Temp: W83782D:3 (CPU thermal diode)
- Enable CPU thermal diode on Sensor:3
- CPU Temp: W83782D:2 (thermistor)
-
- o W83783S
- Abit BE6
- MB Temp: W83783S:2 CPU Temp: W83783S:1
-
- CPU temperature offset
- ----------------------
- Use the following as a guide only (figures in Celsius):
-
- AMD 5k86 PR133 : + 8
- AMD 5k86 PR166 : +17
- AMD K6 166-200 : + 7
- AMD K6 233-300 : +20
- AMD K6-2 450 : + 6
- Cyrix MII PR200 : +15
- IDT WinChip C6 : +20
- Intel Pentium : +32
- Intel Pentium MMX : +22
-
- If your CPU is not listed, check the temperature in the BIOS and compare it
- with the temperature reported by MBProbe. Take the difference as the offset
- and submit a report to me. Thanks.
-
- Monitoring chip features
- ------------------------
- The following table shows the number of inputs available for each type of
- reading:
-
- Hardware monitoring chips
- Internal External
- Voltage Fan Temperature Temperature VID Notes
- ADM1022 - - 1 2 - 3,9
- ADM1025 6 2 1 1 5 3,5
- FMS2701 - - 1 1 - 3,9
- GL518SM 1 2 0 1 - 2
- GL520SM 4 2 0 2 5 2
- Heceta2 6 2 1 - 5 4
- Heceta3 4/6 2 1 2/3 5 3,4,6
- LM78 7 3 1 - 4 8
- LM79 7 3 1 - 5
- LM80 7 2 1 - -
- LM81 6 2 1 - 5 4
- THMC50 - - 1 1 - 3,9
- W83781D 7 3 0 3 5 2,11
- W83782D 9 3 0 3 5 1,10
- W83783S 6 3 0 2 5 1
- SiS5595 4/5 2 1 - - 7
- VT82C686A 5 2 1 2 -
-
- Notes
- 1 External temperature measurement requires thermistors or diodes.
- 2 External temperature measurement requires thermistors.
- 3 External temperature measurement requires diodes.
- 4 Voltage input for Vccp2 can also function as -12V.
- 5 Vccp2 reading is actually the chip's Vcc.
- 6 When temperature input 3 is enabled, Vccp2 and +2.5V are disabled
- as they are the same pins.
- 7 The data sheet only mentions one temperature input but the the Elite
- P5SS-ME has the temperature at a different location so I'm calling that
- the second temperature input.
- 8 At least one board (Tekram P6B40-A4X) uses Vccp2 to connect an external
- thermistor so MBProbe displays 2 temperature readings for the LM78.
- 9 These chips can also monitor 2 voltages for brownouts but there is no way
- of reading the actual voltage values.
- 10 The W83627HF is compatible with this.
- 11 The AS99127F is compatible with this.
-
- Temperature-only monitoring chips
- (external temperature requires additional diodes)
- Internal External
- Temperature Temperature
- LM75 1 -
- MAX1617 1 1
-
- Note: The LM84, ADM1020, ADM1021 and THMC10 are all register compatible with
- the MAX1617.
-
- CPU Core Voltage
- ----------------
- The following table identifies the correct (non-mobile) CPU core voltages
- (variants which confuse MBProbe are marked as such):
-
- AMD
- 5k86 : 3.52V
- K6 PR233 : 3.2V \
- K6 .30u : 2.9V / identical CPUID
- K6 .25u : 2.2V
- K6-2 : 2.2V, 2.4V
- K6-III : 2.2V, 2.4V
- Athlon : 1.6V
- Cyrix
- 6x86 : 3.52V \
- 6x86L : 2.8V > identical CPUID
- 6x86LV : 2.45V /
- 686MX/MII : 2.9V \
- MII >=PR366 : 2.2V / identical CPUID
- IDT
- WinChip C6 : 3.3V (std), 3.52V (VRE)
- WinChip 2 : 3.3V (std), 3.52V (VRE)
- Intel
- Pentium : 3.3V (std), 3.52V (VRE)
- Pentium MMX : 2.8V
- Pentium Pro : 3.3V
- Pentium II .28u : 2.8V
- Celeron : 2.0V
- Pentium II .25u : 2.0V
- Pentium III : 2.0V \
- Pentium III >=533 : 2.05V / identical CPUID
- Pentium III E : 1.65V
- Rise
- mP6 .25u : 2.8V
- mP6 .18u : 2.0V
-
- The only way to be sure of the CPU voltage is to look at the voltage printed
- on it.
-
- References
- ----------
- Data Sheets
- Acer Labs Incorporated (www.acerlabs.com)
- - M1533 (Ver 1.57)
- - M1535 (Ver 1.00)
- - M1535D (Ver 1.00)
- - M1543C (Ver 1.27)
- - M1543C B1 (Ver 0.91)
-
- Advanced Micro Devices (www.amd.com)
- - AMD-756 Peripheral Bus Controller (22548, Rev B, Aug 1999)
-
- Analog Devices (www.analog.com)
- - ADM1020 (Rev.0, C3445-4, Apr 1999)
- - ADM1021 (Rev.0, C3354-3, Jul 1998)
- - ADM1022 (Rev PrJ, Mar 1999)
- - ADM1024 (Rev PrE)
- - ADM1025 (Rev PrJ, Mar 1999)
- - ADM9240 (Rev.0, C3295-8, Mar 1998)
-
- Dallas Semiconductor (www.dallas.com)
- - DS1780 (28 Jul 1998)
-
- Fairchild Semiconductor (www.fairchildsemi.com)
- - FMS2701 (Rev 1.0.2, 26 May 1999)
-
- Genesys Logic (www.genesyslogic.com)
- - GL518SM (Rev 1.17, 13 Apr 1998)
- - GL520SM (Rev 1.02, 13 Apr 1998)
-
- Intel (developer.intel.com)
- - Heceta 2 ASIC (Rev 1.03, 30 Dec 1997)
- - 82371AB (PIIX4) (290562-001, Apr 1997)
- - 82371AB (PIIX4) Specification Update (297738-011, Apr 1999)
- - 82371EB (PIIX4E) Specification Update (290635-007, Apr 1999)
- - 82801AA (ICH) and 82801AB (ICH0) I/O Controller Hub (290655-01, Apr 1999)
- - Mobile Pentium II Processor and Pentium II Processor Mobile Module
- Thermal Sensor Interface Specifications (AP-825, 243724-001, Apr 1998)
- - Pentium II Xeon Processor (243770-003, Jun 1998)
- - Pentium III Xeon Processor (245094-001, Feb 1999)
-
- Maxim (www.maxim-ic.com)
- - MAX1617 (19-1265; Rev 1; Mar 1998)
- - MAX1617A (19-4508; Rev 0; Jan 1999)
-
- National Semiconductor (www.national.com)
- - LM75 (DS012658, Jun 1999)
- - LM78 (DS012873, Jun 1999)
- - LM79 (DS100036, Jun 1999)
- - LM80 (DS100040, Jun 1999)
- - LM81 (DS100072, Jun 1999)
- - LM84 (DS100961, Jun 1999)
-
- Silicon Integrated Systems (www.sis.com.tw)
- - SiS5595 (Preliminary, Rev 1.0, 24 Dec 1997)
-
- Texas Instruments (www.ti.com)
- - THMC10 (Rev 0.5, Jan 1999)
- - THMC50 (SLIS090, Jul 1999)
-
- VIA Technologies (www.viatech.com)
- - VT82C596A (Rev 1.1, 9 Dec 1998)
- - VT82C686A (Rev 1.0, 15 Jan 1999)
-
- Winbond (www.winbond.com.tw)
- - W83781D (version 0.63, 13 Jan 1998)
- - W83782D (version 0.55, Apr 1999)
- - W83783S (version 0.55, Apr 1999)
- - W83627HF/F (version 0.52, 11 Jan 1999)
-
- PCI Local Bus Specification (Rev 2.1, 1 Jun 1995)
-
- System Management Bus (www.sbs-forum.org/smbus/specs/)
- - System Management Bus Specification (Rev 1.1, 11 Dec 1998)
-
- D. Roberts, "Direct Port I/O and Windows NT", Dr. Dobbs Journal, May 1996.
-
- Various CPU info sheets at www.sandpile.org
-