Overclock.net › Forums › Intel › Intel CPUs › i7 2600k @ 4.7Gh (1.352V) runs hotter in Windows 10 than in Windows 7 - What gives?
New Posts  All Forums:Forum Nav:

i7 2600k @ 4.7Gh (1.352V) runs hotter in Windows 10 than in Windows 7 - What gives?

post #1 of 12
Thread Starter 

I have two hard drives in my in my sig rig and when switching between 7 and 10 I noticed something interesting.

 

In Windows 7, when I run RealTemp and let it idle for 15 minutes at the desktop, my base temps across all the cores range from 19C to 25C.

 

In Windows 10, under the same exact scenario, my base temps across all the cores range from 23C to 31C.

 

Ambient room temp is 22.7C

 

What gives? Is it because Windows 10 is more demanding or am I missing some sort of setting that's causing my CPU to run hotter in 10 than in 7?

    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
post #2 of 12
Can you post a screenshot of RealTemp in each situation?

Windows 10 can be a pig if you let it. Keep a close eye on the CPU Load that RealTemp reports. Is this the same in both versions of Windows? You might have to hunt down some W10 bloat ware or a bad driver. When a computer is idle, it should be spending about 0.5% in the C0 state processing Windows background tasks. When switching from W7 to W10, there were a few issues that needed to be fixed. After that, the CPU Load and idle core temps were almost identical.

Edit - Another thing to look at is what C States your CPU is using. This can change depending on the OS unless you have these disabled in the bios. RealTemp T|I Edition shows C State data.

https://drive.google.com/open?id=0B0dpSo9k93jDZlpmbHNzeFlpcWc
Edited by unclewebb - 1/25/16 at 7:57pm
post #3 of 12
Thread Starter 
Quote:
Originally Posted by unclewebb View Post

Can you post a screenshot of RealTemp in each situation?

Windows 10 can be a pig if you let it. Keep a close eye on the CPU Load that RealTemp reports. Is this the same in both versions of Windows? You might have to hunt down some W10 bloat ware or a bad driver. When a computer is idle, it should be spending about 0.5% in the C0 state processing Windows background tasks. When switching from W7 to W10, there were a few issues that needed to be fixed. After that, the CPU Load and idle core temps were almost identical.

Edit - Another thing to look at is what C States your CPU is using. This can change depending on the OS unless you have these disabled in the bios. RealTemp T|I Edition shows C State data.

https://drive.google.com/open?id=0B0dpSo9k93jDZlpmbHNzeFlpcWc

 

Very odd.

 

When I went back into Windows 7 all my temps were matching Windows 10. I don't get it, why would it show such a huge temperature difference from one boot into the next? The funny thing is those temps it initially gave me were what I used to get before I moved all my parts into the Air 540 with a Corsair H100i GTX (was previously using LanBoy Air with a Corsair H70 Core). RealTemp TI doesn't show C states for me either. You can see I've previously had concerns with these temps from my past post history and I've been racking my brains out ever since.

 

Anyway, here are the pics of RealTemp.

 

Windows 7

 

 

Windows 10

 

    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
post #4 of 12
Based on those screenshots, it looks like you are using the Windows Balanced Profile in Windows 7 and the Windows High Performance profile in Windows 10. Go into the Control Panel - Power Options and make sure you are using the same power profiles and make sure that both profiles have the Minimum processor state set to the same percentage.
post #5 of 12
Thread Starter 
Both are set to high performance with 1% minimum processor state in each.
    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
post #6 of 12
Quote:
Originally Posted by NotReadyYet View Post

Both are set to high performance with 1% minimum processor state in each.

The w7 pic shows 1600mhz and the w10 shows 4200. If you had high performance set in w7 it would lock it at 4200 as well.

Anyway, the temp difference is almost nothing. It was most likely the water warming to its operating temps when it evened out. Use which OS you like better and forget about it.
post #7 of 12
My "guess" is that in windows 7, most of the CPU cores get parked. I noticed in windows 10, thats no longer the case.
post #8 of 12
Thread Starter 
Quote:
Originally Posted by Shaded War View Post


The w7 pic shows 1600mhz and the w10 shows 4200. If you had high performance set in w7 it would lock it at 4200 as well.

Anyway, the temp difference is almost nothing. It was most likely the water warming to its operating temps when it evened out. Use which OS you like better and forget about it.

Are these temps okay though? I mean, I've had my processor OC'd since December of 2011. Is it trying to tell me its towards the end of its life?

    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel i7 2600K @ 4.7GHz (1.352v) ASRock Z68 Professional Gen 3 Fatal1ty Edition MSI GTX 980 Ti Golden Gaming Edition @ 1500MHz 16GB Mushkin Redline 4X4GB @ 2133MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 1TB SSD Samsung 840 Pro 256GB SSD Crucial M4 128GB SSD Seagate 2TB HDD 
Optical DriveCoolingOSMonitor
Samsung Writemaster Corsair H100i GTX Windows 10 Pro x64  Overlord Tempest X270 OC @ 120Hz 
KeyboardPowerCaseMouse
Sentey@ Cobalt Pro Seasonic 750X Gold Corsair Carbide Air 540 Mionix Naos 7000 
Mouse PadAudioAudioAudio
Razer Sphex Aune T1 + Philips E88CC SQ Tube Audio-Technica WS99 JVC FXT90 Limited Edition 
AudioAudioAudioOther
AntLion ModMic Earsonics SM3 V2 + Toxic Copper Cable Creative Gigaworks T3 4 x 120mm Gelid Solutions Blue LED Fans 
OtherOther
2 x 120mm Scythe Gentle Typhoon Fans  Lamptron FC5 V2 Fan Controller 
  hide details  
Reply
post #9 of 12
Temps are fine. Probably have plenty of life left in the 2600k.
    
CPUMotherboardGraphicsRAM
Intel Core i7 3770k Gigabyte Z77X-UD3H PNY GTX 770 XLR8 OC 2GB VCGGTX7702XPB-OC 16GB (2 Kits) Samsung 30nm "Miracle" Green 4x4G... 
Hard DriveHard DriveOptical DriveCooling
Seagate 600 Series 240GB SSD 2x Western Digital Caviar Blue 1TB Samsung SH-224FB Phanteks PHTC12DX 
CoolingCoolingCoolingCooling
Prolimatech MK-13 2x Yate Loon D14-BH-12 140mm Fans 3x Corsair SP120L 120mm Fans Lian Li 140mm Vented Top Panel Lian Li T-LM14B-2  
OSMonitorMonitorKeyboard
Windows 7 64 Professional 1x Asus PB258Q (Primary 1440P) 1 Asus VH242H (Secondary 1080P) Filco Majestouch II Ninja TKL Keyboard (Cherry ... 
PowerCaseMouseMouse Pad
Seasonic SS-660XP2 660 Watt Platinum Lian Li PC A05 Zowie BenQ EC2-A Corsair Mouse Mat MM600 on top of Inateck Huge ... 
AudioOtherOther
Cambridge Soundworks FPS 2000 4.1 TPLINK N600 Wifi Inateck Superspeed 4 Ports PCI-E to USB 3.0  
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel Core i7 3770k Gigabyte Z77X-UD3H PNY GTX 770 XLR8 OC 2GB VCGGTX7702XPB-OC 16GB (2 Kits) Samsung 30nm "Miracle" Green 4x4G... 
Hard DriveHard DriveOptical DriveCooling
Seagate 600 Series 240GB SSD 2x Western Digital Caviar Blue 1TB Samsung SH-224FB Phanteks PHTC12DX 
CoolingCoolingCoolingCooling
Prolimatech MK-13 2x Yate Loon D14-BH-12 140mm Fans 3x Corsair SP120L 120mm Fans Lian Li 140mm Vented Top Panel Lian Li T-LM14B-2  
OSMonitorMonitorKeyboard
Windows 7 64 Professional 1x Asus PB258Q (Primary 1440P) 1 Asus VH242H (Secondary 1080P) Filco Majestouch II Ninja TKL Keyboard (Cherry ... 
PowerCaseMouseMouse Pad
Seasonic SS-660XP2 660 Watt Platinum Lian Li PC A05 Zowie BenQ EC2-A Corsair Mouse Mat MM600 on top of Inateck Huge ... 
AudioOtherOther
Cambridge Soundworks FPS 2000 4.1 TPLINK N600 Wifi Inateck Superspeed 4 Ports PCI-E to USB 3.0  
  hide details  
Reply
post #10 of 12
Quote:
Originally Posted by NotReadyYet View Post

Both are set to high performance with 1% minimum processor state in each.

The default Minimum processor state when using the High Performance profile is 100%. If you manually change this to 1%, then that really isn't the High Performance profile anymore. You have modified the High Performance profile and turned it into something that is going to operate similar to the Balanced profile. There are also a lot of hidden settings within each profile and some of these hidden settings in Windows 10 did not exist in Windows 7 so it is impossible to make a fair and equal comparison. Slight differences in core temperature when lightly loaded should be expected.

Maybe with Windows 10, Microsoft finally learned that locking a CPU to the minimum MHz really does not accomplish what they were trying to accomplish. A slow CPU is an inefficient CPU.

Power Optimization – a Reality Check
http://www.cs.berkeley.edu/~krioukov/realityCheck.pdf

The 2600K does not use the AVX2 or FMA3 instruction set so they do not turn into ovens like Haswell and newer CPUs can. They also seem to run reliably for a long time even when grossly overclocked. No worries.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › i7 2600k @ 4.7Gh (1.352V) runs hotter in Windows 10 than in Windows 7 - What gives?