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Two questions: Sandy Bridge C1E/EIST and CPUTIN temperature

post #1 of 4
Thread Starter 
Hello,


I have two questions for you guys:


1) When vcore is set to manual, are there any power savings with C1E/EIST enabled? Does anyone have any numbers?


2) Is it normal that CPUTIN is always ~5ºC hotter than the hottest core? I thought that the CPU package was supposed to run cooler than cores at all times...


Thank you in advance.
Edited by nihilisti - 7/31/11 at 6:36am
post #2 of 4
Quote:
Originally Posted by nihilisti;14412459 
Hello,


I have two questions for you guys:


1) When vcore is set to manual, are there any power savings with C1E/EIST enabled? Does anyone have any numbers?
I don't know, but with Sandy Bridge, C1E and EIST are best left enabled unless you decide to start adjusting the BCLK. The same goes for CPU Spread Spectrum.

Quote:
Originally Posted by nihilisti;14412459 
2) Is it normal that CPUTIN is always ~5ºC hotter than the hottest core? I thought that the CPU package was supposed to run cooler than cores at all times...


Thank you in advance.
I ignore mine because for example, mine says 60°C right now but yet my cores are all hovering at 28°C. However, there is a "Package" reading, and it's currently the same as my cores.
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by TwoCables;14414939 
I don't know, but with Sandy Bridge, C1E and EIST are best left enabled unless you decide to start adjusting the BCLK. The same goes for CPU Spread Spectrum.

Could you please elaborate?
Quote:
Originally Posted by TwoCables;14414939 

I ignore mine because for example, mine says 60°C right now but yet my cores are all hovering at 28°C. However, there is a "Package" reading, and it's currently the same as my cores.

Using HWMonitor, my TMPIN0 (CPUTIN) temperature is the same as the "Package" reading. Always ~5ºC higher than cores on load.

I will assume it's some sensor/reading weirdness...

Thank you for your response. smile.gif
Edited by nihilisti - 7/31/11 at 12:11pm
post #4 of 4
Quote:
Originally Posted by nihilisti;14415031 
Could you please elaborate?
I think that it's for the sake of stability. When leaving the BCLK at 100.0 MHz, all these things should be left enabled (with C3 and C6 left on "Auto"). When adjusting the BLCK above or below 100.0 MHz, then these things can be disabled, especially CPU Spread Spectrum.


Quote:
Originally Posted by nihilisti;14415031 
Using HWMonitor, my TMPIN0 (CPUTIN) temperature is the same as the "Package" reading. Always ~5ºC higher than cores on load.

I will assume it's some sensor/reading weirdness...

Thank you for your response. smile.gif
For me, TMPIN0 is my graphics card's temperature.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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