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Are these CPU Temperatures OK for i5 4670k?

post #1 of 5
Thread Starter 
Hi!, I am a little confused with all I've read in this posts on different forums anout temperatures having to be under 70 or 75 ºC.. I own a i5-4670K and i thought everything under 90 ºC was fine.

First of all i must say I am not overclocking expert and i won't have my PC running games or apps that hit the 100% CPU usage all the time. I just wanted to overclock a little my CPU and enjoy a little better speeds in general and when I game from time to time.

Before my desktop PC i owned 3 different laptops, I used them around 3 or 4 years each until i decided to upgrade to a better one. All of them Intel. The last one a hp with Core i7-720QM. In all these laptops, like many laptops, even in idle cpu temps are about 70 ºC, when i used them to play games they use to go to more than 80-88 ºC and if i played emulators like dolphin for the Wii or PCSX2 for PS2 then they usually went up to 90 - 95 ºC. Then with heatsink cleanning and a cooler the thing improved a little bit. Anyway, what i am trying to say is that this high temps seems almost unavoidable for laptops, and at least my three laptops didn't die yet in 4 years and who wants a CPU for more than 4 years??.

So, are desktop CPU less durable, more weak? or is the overclocking community exagerating a little??.. maybe over 75 ºC is dangerous only if you are planning to be gaming 12 hours per day?.
I am not saying I don't believe what you guys say, just trying to understand.. i am a little dissapointed cause I thought i might do at least a little overclocking with my PC but even at 4.0 Ghz is reaching easily the 85 ºC with prime95 small fft... the thing is that when i play some emu games or whatever is not going so high at all, maybe 60 - 70ºC... Another thing i notice is that always core 1 run way hotter than the others under prime95 and core 4 colder. For example, in stock, without any OC and prime95 small FFT: core1: 76, core2: 70, core3:69, core4:67, almost 10 ºC of difference! (maybe i haven't used the thermal paste correctly?)

So what should I do??

By the way my specs are:

Tower - Zalman Z11 Plus
Power - Tacens Radix VI 750W
MoBo - Asrock Z87 Extreme4
CPU - Intel Core i5-4670K
Cooler - Noctua NH-D14
RAM - G. Skill Ripjaws X DDR3 2133 PC3-17000 2x4GB CL11
Graphics - Radeon HD 5750 1GB DDR5

I used a predefined profile from the MoBo UEFI to OC it from 3.4 to 4.0 Ghz. Probably this is not the best way.. but i don't know much about OC and i didn't want to spend hours researching as i am a quite busy these days frown.gif . Also I read some people were fine with this profiles, even the 4.4 GHz profile.

I know its not a big PC config for overclocking but i bought noctua NH-D14 and the Z87 Extreme 4 thinking in at least a little of OC.

Thanks in advance, and sorry if I made mistakes as i am not english speaker...
post #2 of 5

The difference in temps between cores is normal.

 

Your maximum temps are very safe, HOWEVER, it may be a sign of the CPU's core  voltage being a lot higher than it needs to be (this is just one possibility). So, please download and open CPU-Z, run Prime95 for a moment (the Small FFTs test is inferior to the Blend test for your CPU), and report what your CPU's core voltage was while running Prime95.

 

Do not go by any voltage that is called the "VID" because that is not your current core voltage.

 

Another possibility is the temperature of the air that is being passed through the heatsink. So, some questions about that are:

 

  1. Is your computer out in the open, or is it in a desk hole?
  2. What is your room temperature? If you don't know, then is it cool, comfortable, warm, or hot? If the humidity is high, then provide an estimate on what the air temperature is.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 
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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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 
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
post #3 of 5
Thread Starter 
Thanks a lot for your answer!

CPU-Z reports that my current core voltage, while running prime95 as you said, oscilates between 1.110V and 1.117V.

My computer is more or less in the open, but under the table as shown in this picture.



Room temperature is around 24 ºC

So 76 ºC with Prime95 small FFT and no overclocking at all would be expected?, what temperature would be the limit to consider it safe?? And also, even if it could be normal difference between cores.. 10 ºC of difference??

Again thanks for helping out!.
post #4 of 5

You're very welcome!

 

I think that 76°C is very high at stock with the NH-D14 and a room temperature of about 24°C, and with your system out in the open like that.  Perhaps this is either a sign that you need to "delid" the CPU, or there's something wrong with the installation of the NH-D14 (like maybe it's too loose, or there's not enough thermal paste, or it didn't spread very well, etc.).

 

As far as the maximum safe temperature is concerned: there's something called the Tj. Max which is the temperature at which the CPU is supposed to automatically throttle itself down in order to avoid overheating. I don't know yet what the Tj. Max is for these Haswell CPUs, but one way you can find out is by opening Real Temp and adding the current temperature (the top-most row of temperatures) of any core to the "Distance to TJ Max" (the 2nd row of temps) that's displayed for that same core. It updates the temperatures frequently, so pick a core, watch it, and then memorize the two temperatures you see at any given interval and add them together.

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) 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 
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 (1.400-1.424V in Manual Mode) 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 
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
post #5 of 5
Thread Starter 
wow! delid it sound a little hardcore to me right now.. i would lose the warranty and even if i would really like to overclock it i can live without overclocking it yet!

I used Real Temp, so my Tj. Max would be 100 ºC! But i read about that you don't really should get even close to this maximum temperature or you can degrade your CPU... I will probably try to remove the NH-D14 and see how the install it again being careful with the thermal paste.. you confirmed just what I suspected: that temperatures are too high.

I'll report back when I re-install the NH-D14. Please if you come up with any other idea.. let me know!
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