Overclock.net › Forums › Intel › Intel CPUs › The Truth about Temperatures and Voltages
New Posts  All Forums:Forum Nav:

The Truth about Temperatures and Voltages - Page 2

post #11 of 599
We've talked about the TJMax settings that Intel has released and they have debunked their own values. I have now just gone by the Distance to TJMax (DTS) vs actually reading the temp.

For instance right now as I type this my computer is at 54c to TJMax, no matter what you change your TJMax to this number never changes.

EDIT: TJMax of 70 puts me at a 16c which is about 60F... My house is warmer then 60F :/ And my proc is at 3ghz with 1.4v.

I strongly suggest you put a disclaimer for yourself on this.

pink
Edited by Mr Pink57 - 3/15/09 at 12:49am
post #12 of 599
Awesome info that I had to look up several times, now all in one convenient place! repped

I really only check my Distance to TjMax to be >20 to consider within reason. Is that gonna work or will I be throttling?
Hexacore Folding
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-4930k Asus Rampage IV Gene Asus Strix GTX 980 Samsung Low-Profile 16GB DDR3 
Hard DriveCoolingOSMonitor
Samsung 840 Pro Scythe Mugen 4 Windows 7 Asus 23" ML239H 
KeyboardPowerCaseMouse
CoolerMaster QuickFire Rapid (Blues) SeaSonic 520w Platinum Fractal Design Arc Mini R2 Logitech MX518 
Mouse Pad
Siberia mat 
  hide details  
Reply
Hexacore Folding
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-4930k Asus Rampage IV Gene Asus Strix GTX 980 Samsung Low-Profile 16GB DDR3 
Hard DriveCoolingOSMonitor
Samsung 840 Pro Scythe Mugen 4 Windows 7 Asus 23" ML239H 
KeyboardPowerCaseMouse
CoolerMaster QuickFire Rapid (Blues) SeaSonic 520w Platinum Fractal Design Arc Mini R2 Logitech MX518 
Mouse Pad
Siberia mat 
  hide details  
Reply
post #13 of 599
Thread Starter 
Quote:
Originally Posted by Mr Pink57 View Post
We've talked about the TJMax settings that Intel has released and they have debunked their own values. I have now just gone by the Distance to TJMax (DTS) vs actually reading the temp.

For instance right now as I type this my computer is at 54c to TJMax, no matter what you change your TJMax to this number never changes.

EDIT: TJMax of 70 puts me at a 16c which is about 60F... My house is warmer then 60F :/ And my proc is at 3ghz with 1.4v.

pink
The actual values for when Core Temperature is approximately equal to TJ Max has never been "debunked." If you read the Other Side of TJ Max Section in my original post you will see that I clearly state how inaccurate idle readings are. So a 16C idle is very inaccurate exactly like I said it would be, and which you are claiming "debunks" my post. TJ Max does nothing for idle but give you inaccurate values and then it only gives accurate values for load when you are close to the TJ Max value.

Quote:
Originally Posted by crashnburn_819 View Post
Awesome info that I had to look up several times, now all in one convenient place! repped

I really only check my Distance to TjMax to be >20 to consider within reason. Is that gonna work or will I be throttling?
Since your thermal spec (tcase) is 61.4C and your TJ Max is 80C, then keeping a Dist to TJ Max of 20C would be more than enough to keep perfectly safe. You shouldn't really be throttling at all until you hit around 80C (Dist to TJ Max=0) or not at all if disabled in the bios.
Edited by ChickenInferno - 8/29/09 at 6:44am
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
post #14 of 599
Quote:
Originally Posted by ChickenInferno View Post
Since your max temp is 61.4C and your TJ Max is 70C, then keeping a Dist to TJ Max of 20C would be more than enough to keep perfectly safe. Technically, you could go up to a Distance of only 8.6, before doing damage, but I don't really reccomend that. You shouldn't really be throttling at all until you hit 61.4C.
That isn't how it works.

The thermal spec (tcase and tjmax are two different measuring points. You should reach thermal spec/tcase the same time you reach tjmax.

And spontaneous, or even overly rapid, damage won't occur at tjmax, that's jsut whent he chip will start to throttle (if thermal management features aren't disabled).
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
post #15 of 599
Thread Starter 
The thermal specification (this example E6300 L2) is 61.4C so at 61.4C according to Intel you can start doing damage. If you go beyond thermal specification all the way to TJ Max, then all this is doing is simply going beyond the accuracy point. Temps above TJ Max become more and more inaccurate because it's just not designed for those temps. TJ Max says nothing about damage only about the accuracy of the temps. Since Intel has said that thermal specification is 61.4C, then at any temp at or above 61.4C damage may or may not occur spontaneously or fast. No one can easily predict how heat damage will occur on a cpu unless you do something crazy like heating it to 100C with a max temp or 71C (Obviously it would be fried if left for any considerable amount of time)

I did however make a booboo by saying the throttling temp was 61.4. I didn't reread it.


Alot of information was learned after this post was written. Please refer to the first post for the correct information.
Edited by ChickenInferno - 8/9/09 at 11:33am
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
post #16 of 599
This has been debated several times, what I have found is this:

Testing my QX6850 at 3.6 GHz. with 1.352v using Orthos small FFT's will give these readings:

Ambient Room temp. = 21c.

Core Temp. using the 80c. TJ Max setting = 39c. Full load.

Core Temp. using the 100c TJ Max setting = 59c. Full load.

My conclusion is, 39c. full load is highly unlikely, 59c. full load seems more accurate to me.
    
CPUMotherboardGraphicsRAM
Intel i7-2600K 4.8 GHz. & 1.38v Gigabyte Z68XP-UD5 2-ATI, HD 5870's, Crossfire'd G.Skill Ripjaws F3-12800CL7D-16GBXH 
Hard DriveOptical DriveOSMonitor
OCZ Agility 3, 240 GB SSD & 1TB Segt.Storage LG Blue Ray, DVD Windows 7 Ultimate 64 Dell U2410 FP 1920 x 1200 
KeyboardPowerCaseMouse
Microsoft Thermaltake Black Widow 850W Thermaltake Aguila Microsoft Optical 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7-2600K 4.8 GHz. & 1.38v Gigabyte Z68XP-UD5 2-ATI, HD 5870's, Crossfire'd G.Skill Ripjaws F3-12800CL7D-16GBXH 
Hard DriveOptical DriveOSMonitor
OCZ Agility 3, 240 GB SSD & 1TB Segt.Storage LG Blue Ray, DVD Windows 7 Ultimate 64 Dell U2410 FP 1920 x 1200 
KeyboardPowerCaseMouse
Microsoft Thermaltake Black Widow 850W Thermaltake Aguila Microsoft Optical 
  hide details  
Reply
post #17 of 599
E8400 CO @ 3.6ghz (TjMax 100c)
Calibration for RealTemp (TjMax was 95c when I did it)



Sensor Test w/ RealTemp (100c TjMax)



CoreTemp, RealTemp, and HWMonitor Temps



My only question in your thread is where do you get your calibration figures from, how, and did you need to adjust?

My example no calibrations needed, I have good sensors (but a lousey o'cr)
Edited by kpo6969 - 3/15/09 at 1:41am
post #18 of 599
Thread Starter 
Quote:
Originally Posted by hogans View Post
This has been debated several times, what I have found is this:

Testing my QX6850 at 3.6 GHz. with 1.352v using Orthos small FFT's will give these readings:

Ambient Room temp. = 21c.

Core Temp. using the 80c. TJ Max setting = 39c. Full load.

Core Temp. using the 100c TJ Max setting = 59c. Full load.

My conclusion is, 39c. full load is highly unlikely, 59c. full load seems more accurate to me.
Okay, looking at the error chart as an example. Your first reported temp is 39C which since it is less than 50C, according to Intel you can only think of this as "a temp lower than 50." Most of my post is not about lowering your temps by changing the TJ Max to something that artifically makes it look like you are running cooler, but that until you are relatively near your TJ Max your values are just very inaccurate. Just looking at your distance to TJ Max value, at a distance of 41 any reading is going to be highly innaccurate regardless of what temperature it is reporting. This could be 39C plus or minus 20. By artifically calling the TJ Max 100C, you raise your reported Temp but the distance is still the same so the innaccuracy is still the same.

Quote:
Originally Posted by kpo6969 View Post
My only question in your thread is where do you get your calibration figures from, how, and did you need to adjust?
The values for TJ Max were found actually on OCN posted by your link to Tom's Hardware when you posted in this thread.

I only had to adjust Core Temp, because Real Temp and HWMonitor were already set to TJMax of 90C.
Edited by ChickenInferno - 3/15/09 at 1:53am
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
post #19 of 599
Thread Starter 
Edit: Eww Double Post sorry
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
Gaming PC / HTPC
(17 items)
 
Bedroom PC
(13 items)
 
 
CPUMotherboardGraphicsRAM
i7 7700k Asus Prime Z270-A GB Auros-X 1080 Ti G-Skill (2x8gb) 3000mhz  
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 Western Digital 5900rpm Seagate 7200rpm LG 22x DVD Burner 
CoolingOSMonitorKeyboard
Noctua NH-D14 Win 10 x64 Pro LG 55" 4k B6 OLED Microsoft Desktop 400 
PowerCaseMouseMouse Pad
Corsair TX750 V2 NZXT Source 210 Microsoft Desktop 400 Black 
Audio
Custom Surround 5.1 
CPUMotherboardGraphicsRAM
Intel 2120T Biostar H61MH Intel HD 2000 G-Skill F3-12800CL9D-8GBXL  
Hard DriveOptical DriveCoolingOS
Samsung Evo 128gb Asus 24x DVD Burner Stock Win 10 x64 
MonitorKeyboardPowerCase
LG 40" 1080p HP Wireless Keyboard/Mouse Silverstone 400W ST40F-ES Silverstone ML03B 
Other
Linksys WMP600N Wireless Card 
  hide details  
Reply
post #20 of 599
Quote:
My only question in your thread is where do you get your calibration figures from, how, and did you need to adjust?

My example no calibrations needed, I have good sensors (but a lousey o'cr)

Quote:
The values for TJ Max were found actually on OCN posted by your link to Tom's Hardware when you posted in this thread.

I only had to adjust Core Temp, because Real Temp and HWMonitor were already set to TJMax of 90C.
So you never actually calibrated your cpu, you just made all the TjMax the same.

Calibrating your cpu for RealTemp:

http://www.techpowerup.com/realtemp/docs.php

Calibration
The only way you are going to get some reasonably accurate reported temperatues is if you take the time to check and adjust your calibration. On the XtremeSystems forum, rge did some extensive testing with both an IR thermometer as well as mounting a calibrated thermocouple into the IHS lid over top of his processor. The calibration procedure involves running your CPU at a fixed MHz and at a reduced core voltage. This helps equalize the heat ouput of a wide range of CPUs so the difference in reported temperature between a Q6600 G0, an E8400 C0 and an E2160 with 1MB of cache should only be +/- 1C at these settings with the E8400 representing the mid point.

You need to set your CPU to default MHz for this test. The front side bus should be set to 266 MHz for 65 nm processors and to 333 MHz for the newer 45 nm processors. Core voltage needs to be set to 1.10 volts as reported by CPU-Z. The CPU multiplier needs to be set to 6.0 at idle or 12.0 for Core i7. You can either enter these values manually into your bios or you can also enable EIST, Enhanced Intel Speed Step, which is designed to drop your CPU close to these values automatically at idle. Not all motherboards properly support EIST so it's best to check using CPU-Z to confirm these values.

Open your computer case and compare your reported idle temperatures to your room temperature near your case or to your water temperature if you are water cooled. Based on the type of CPU cooling you are using, Core 2 based CPUs should be seeing reported temperatures similar to what rge saw during his testing.

COOLING...............................IDLE DEGREES ABOVE AMBIENT
High end water...............................6C above ambient
High end air (true push/pull) ........6-7C
High end air (1fan).........................7C
Mid air (zalman 9500)....................8-9C depending on fan rpm
Intel stock cooler...........................10-11C

If your reported temperature is too low then you will need to go into the RealTemp Settings window and use a positive calibration factor to increase your reported temperature. If your CPU is reading too high, you will need to use a negative calibration factor. On a multi-core processor during this test, you should have equal temperatures for all of your cores. Though this calibration test is done when your processor is idle, the calibration settings entered will improve the accuracy of your reported tempertures from idle to TJMax. Return your computer to your normal MHz and core voltage settings and if you need to, you can make some further minor adjustments to equalize your core temperatures at idle. You shouldn't need to make any major adjustments at this point.

Based on Intel's specs and during initial testing, the Core i7 CPUs seem to be more efficient and create less heat at idle compared to previous Core 2 Quad processors. Your results will likely be a couple of degrees less than the numbers listed in this chart depending on how your bios and Windows power management options are set.

Settings Window
Idle Calibration

Any value between -19.9 and 9.9 can be used to improve the accuracy of your reported temperatures. Refer to the Calibration paragraph above to determine what settings are appropriate for your processor. A unique value for each core can be set. The temperature sensors on each CPU are unique so for best results, RealTemp should be calibrated to your CPU.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › The Truth about Temperatures and Voltages