Questions

CPU Overheating

Tags: Windows, Hardware
+
0 Votes

CPU Overheating

kal_lmn
I have an AMD FX 4100 CPU with the stock fan on a Sabertooth 990FX mobo. My PC never really crashed before, but recently it has just been crashing randomly, usually during games, and always during burning DVDs in Nero. I figured it was CPU intensive processes that kept causing the issues, so I downloaded HWMonitor. It says the CPU temp is idling around 50 C and during burning videos, it jumps to 90

I tried shutting everything down, reapplying the thermal paste, and checking if everything worked, but it appears to have not helped at all. I think it MAY be the voltage to the cpu, but do not know the standard voltage it should be running at.

My question is : what could cause such overheating? It never displayed any symptoms prior to recently, though I did not check the temps prior, so maybe it was overheating, I just did not know... but I USED to be able to burn DVDs without crashes, now it crashes every single attempt.

Any help would be greatly appreciated.

Member Answers

    • +
      0 Votes
      Slayer_

      Remember only a tiny pea sized dot in the centre is required.

      and FYI, 85C is basically melt down for CPU's. Most will throttle back or shut down entirely if you exceed that.

      If you didn't mess with overclocking, your voltage should be fine. You can try going into your BIOS and loading the defaults for everything.
      On some boards there will be a "lad safe defaults" and "load optimum" options. Go with the safe defaults then run your test. Then if its good, try the optimum and run your tests. If it's good then your done, if it's bad, you'll have to find what changed between the two.
      From my experience the safe defaults cause a significant slowdown to your computer performance, so it might not be desirable to run with them always.

      Second, make sure your fan is actually spinning on the CPU. Try cranking it to max and see if it helps the temperatures.

      +
      0 Votes
      Slayer_

      <i>will be a "load safe defaults"</i>
      will be a "load safe defaults"

      +
      0 Votes
      TheChas

      I agree that temps over 70C are not normal and should be dealt with.

      First, make sure all of your case vents and the power supply fan are clean and that there is good airflow from the power supply fan.

      Next, is the entire heatsink hot, or is it just warm at the base?

      If the entire heatsink itself is hot, you are not getting enough cooling air either off of the heatsink, or into the case.

      I would add case fans to force cooling air into the case and across the heatsink.

      I like to set up case fans so that the air going in is 10% to 20% more than the air flow being exhausted. This way you control where the air enters the case and have a chance to filter the air.

      If adding cooling air does not lower the temperature, you may need a better CPU heatsink and fan.

      Also, if the heatsink paste is applied too thick, it can cause the CPU temperature to rise. You want the heat paste just thick enough to fill any gaps between the CPU and the heatsink. If the paste oozes out when you seat the heatsink, you have applied too much paste.

      Chas

      +
      0 Votes
      Slayer_

      Is the temperature increase fairly gradual? Does it take around 10-20 minutes to overheat, or is it around a minute?
      The former indicates bad air flow, the latter indicates bad CPU cooling.

      +
      0 Votes
      mjd420nova

      I suspect that a wary nose may have noted the temps if you hadn't used speedfan, etc. Yes, redline for me is 65c, then I look at the vents, fans and clean the heatsink. The Intel i5 is pretty durable but wouldn't last long at those temps. I use pieces of posterboard to help channel airflow to the needed areas and stop flow from inside the case to the powersupply case.

      +
      0 Votes
      kal_lmn

      For an FX 4100 a temperature of 90 C is normal? Most temperature monitoring softwares I tried (including HWmonitor, Speedfan, and Everest) all say that past 80 is redzoned, or bad. I downloaded two different ultimate boot CDs, but they don't seem to have cpu checking softwares, so what am I supposed to be checking? Sorry for the questions, I just want to know and make sure I am not further damaging my system.

      After a bit of cleaning of my heatsink and reapplying my thermal paste, it still sits around 50C idle, playing a simple game like starbound raises it to 80C, and more intensive games raise it to 90-100C. My PC auto shuts off, and I THOUGHT it was the temperature issues, as the temp monitoring software says its high, so I just wanted to confirm that it is or is not.

      +
      0 Votes
      kal_lmn

      For an FX 4100 a temperature of 90 C is normal? Most temperature monitoring softwares I tried (including HWmonitor, Speedfan, and Everest) all say that past 80 is redzoned, or bad. I downloaded two different ultimate boot CDs, but they don't seem to have cpu checking softwares, so what am I supposed to be checking? Sorry for the questions, I just want to know and make sure I am not further damaging my system.

      After a bit of cleaning of my heatsink and reapplying my thermal paste, it still sits around 50C idle, playing a simple game like starbound raises it to 80C, and more intensive games raise it to 90-100C. My PC auto shuts off, and I THOUGHT it was the temperature issues, as the temp monitoring software says its high, so I just wanted to confirm that it is or is not.

      +
      0 Votes
      HAL 9000 Moderator

      They are perfectly normal and should be well within normal operating parameters and not causing any problems.

      I would think that the easy way to test the hardware is to use something like the Ultimate Boot CD available free here

      http://sourceforge.net/projects/ubcd/

      And test the hardware for proper function. Also depending on what version of Windows you are running you may need to reload the system as the OS may have been damaged by some installed software or a monthly patch. This is more common if the OS has been in constant use for more that 18 months or so.

      As you have not said anything and as the high use temp is not overly high I wouldn't think it's the case but the heatsink that you are using could also be partly blocked with dust and need cleaning.

      Anyway get yourself a copy of the Ultimate Boot CD and test your hardware before doing anything else. Also depending on the Power Supply you are using it's possible that it may be going off and causing problems. Though this is normally associated with the cheap No Name Power Supplies as Apposed to to the more expensive brand name Power Supplies so that may also be worth a look.

      Col

    • +
      0 Votes
      HAL 9000 Moderator

      They are perfectly normal and should be well within normal operating parameters and not causing any problems.

      I would think that the easy way to test the hardware is to use something like the Ultimate Boot CD available free here

      http://sourceforge.net/projects/ubcd/

      And test the hardware for proper function. Also depending on what version of Windows you are running you may need to reload the system as the OS may have been damaged by some installed software or a monthly patch. This is more common if the OS has been in constant use for more that 18 months or so.

      As you have not said anything and as the high use temp is not overly high I wouldn't think it's the case but the heatsink that you are using could also be partly blocked with dust and need cleaning.

      Anyway get yourself a copy of the Ultimate Boot CD and test your hardware before doing anything else. Also depending on the Power Supply you are using it's possible that it may be going off and causing problems. Though this is normally associated with the cheap No Name Power Supplies as Apposed to to the more expensive brand name Power Supplies so that may also be worth a look.

      Col

      +
      0 Votes
      kal_lmn

      For an FX 4100 a temperature of 90 C is normal? Most temperature monitoring softwares I tried (including HWmonitor, Speedfan, and Everest) all say that past 80 is redzoned, or bad. I downloaded two different ultimate boot CDs, but they don't seem to have cpu checking softwares, so what am I supposed to be checking? Sorry for the questions, I just want to know and make sure I am not further damaging my system.

      After a bit of cleaning of my heatsink and reapplying my thermal paste, it still sits around 50C idle, playing a simple game like starbound raises it to 80C, and more intensive games raise it to 90-100C. My PC auto shuts off, and I THOUGHT it was the temperature issues, as the temp monitoring software says its high, so I just wanted to confirm that it is or is not.

      +
      0 Votes
      kal_lmn

      For an FX 4100 a temperature of 90 C is normal? Most temperature monitoring softwares I tried (including HWmonitor, Speedfan, and Everest) all say that past 80 is redzoned, or bad. I downloaded two different ultimate boot CDs, but they don't seem to have cpu checking softwares, so what am I supposed to be checking? Sorry for the questions, I just want to know and make sure I am not further damaging my system.

      After a bit of cleaning of my heatsink and reapplying my thermal paste, it still sits around 50C idle, playing a simple game like starbound raises it to 80C, and more intensive games raise it to 90-100C. My PC auto shuts off, and I THOUGHT it was the temperature issues, as the temp monitoring software says its high, so I just wanted to confirm that it is or is not.

      +
      0 Votes
      mjd420nova

      I suspect that a wary nose may have noted the temps if you hadn't used speedfan, etc. Yes, redline for me is 65c, then I look at the vents, fans and clean the heatsink. The Intel i5 is pretty durable but wouldn't last long at those temps. I use pieces of posterboard to help channel airflow to the needed areas and stop flow from inside the case to the powersupply case.

      +
      0 Votes
      TheChas

      I agree that temps over 70C are not normal and should be dealt with.

      First, make sure all of your case vents and the power supply fan are clean and that there is good airflow from the power supply fan.

      Next, is the entire heatsink hot, or is it just warm at the base?

      If the entire heatsink itself is hot, you are not getting enough cooling air either off of the heatsink, or into the case.

      I would add case fans to force cooling air into the case and across the heatsink.

      I like to set up case fans so that the air going in is 10% to 20% more than the air flow being exhausted. This way you control where the air enters the case and have a chance to filter the air.

      If adding cooling air does not lower the temperature, you may need a better CPU heatsink and fan.

      Also, if the heatsink paste is applied too thick, it can cause the CPU temperature to rise. You want the heat paste just thick enough to fill any gaps between the CPU and the heatsink. If the paste oozes out when you seat the heatsink, you have applied too much paste.

      Chas

      +
      0 Votes
      Slayer_

      Is the temperature increase fairly gradual? Does it take around 10-20 minutes to overheat, or is it around a minute?
      The former indicates bad air flow, the latter indicates bad CPU cooling.

      +
      0 Votes
      Slayer_

      Remember only a tiny pea sized dot in the centre is required.

      and FYI, 85C is basically melt down for CPU's. Most will throttle back or shut down entirely if you exceed that.

      If you didn't mess with overclocking, your voltage should be fine. You can try going into your BIOS and loading the defaults for everything.
      On some boards there will be a "lad safe defaults" and "load optimum" options. Go with the safe defaults then run your test. Then if its good, try the optimum and run your tests. If it's good then your done, if it's bad, you'll have to find what changed between the two.
      From my experience the safe defaults cause a significant slowdown to your computer performance, so it might not be desirable to run with them always.

      Second, make sure your fan is actually spinning on the CPU. Try cranking it to max and see if it helps the temperatures.

      +
      0 Votes
      Slayer_

      <i>will be a "load safe defaults"</i>
      will be a "load safe defaults"