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62

As others have noted, you need the lm-sensors package. I thought I should mention that in addition to installing the package, you should run the sensors-detect command to identify the kernel modules that need to be loaded. If you haven't done this, manually run this once and check if it detects any sensors on board your computer. $ sudo sensors-detect # ...


40

Actually this information is given to OS by the BIOS, but you will need an application to expose the information. You can find a lot of applications to do this, Google found these: Realtemp. CPU thermomether. Core temp.


37

As long as you keep the machine dry, there shouldn't be any real problems from running a PC in the cold. Where you will run into problems is if condensation is allowed to form on the components. I have installed computers into blast chillers and refrigeration factories without problems, but we did need to make sure the cases were put into enclosures that ...


31

There is no builtin Windows utility to do this, so you need to use another tool. My personal favorite is SpeedFan. SpeedFan can monitor CPU temps, GPU temps, S.M.A.R.T. data, HD temps, and more; and if you want to you can also adjust fan speeds with it too.


29

Turning off the fans, liquid cooling, etc does not reduce the total heat caused by powering the components in your computer. If you vent the heat from the electronics into the room, you are going to raise the temperature of your room, regardless of the method used to remove the heat. The only solution is to either turn off the computer or vent the heat out ...


25

It may not work stable when temperature is too low because electrolytic capacitors did not work properly when temperature is too low. Especially when the power supply is cheapest possible (with small capacitors). Additionally, low temperature is a problem for most aluminum capacitors: for most types, capacitance falls off rapidly below room temperature ...


22

Speedfan does all that. SpeedFan is software that can read temperatures, voltages and fan speeds of computer components. It can change computer fan speeds depending on the temperature of various components. The program can display system variables as a chart and as an indicator in the system tray. Fully configurable user events can be defined to ...


21

Using 'sensors' and 'watch', you can real-time monitor sensors data on the command line via: watch -n 1 -d sensors This will display sensors every 1 sec and highlight the difference from the previous second. Every 1.0s: /usr/bin/sensors ... temp1: +55C (high = +50C, hyst = +45C) sensor = thermistor ALARM temp2: +35.0C (high = +80C, ...


21

Windows doesn't expose this information out of the box - you need to install any of a myriad of tools to find it. (For something lightweight, I like Open Hardware Monitor.)


20

As it happens, there's a bunch of experimental servers running quite close to my office — specifically, on the roof of the building I work in — that may provide some relevant real-world data. They're part of an experiment by the Helsinki Institute for Information Technology on cooling servers with unfiltered outdoor air at ambient temperatures ...


15

lm-sensors Lm-sensors is a hardware health monitoring package for Linux. It allows you to access information from temperature, voltage, and fan speed sensors. It works with most newer systems. This package contains programs to help you set up and read data from lm-sensors. To install use : # sudo apt-get install lm-sensors ...


15

37 degrees should not be a problem at all. Naturally, hard drives differ in their specs, some can run hotter than the others. You should check the published specifications of the drives that you have. For example, WD Caviar Black 1TB operational temperature is -0° C to 60° C. Of course, you would not want your drive to run 60°, as it might reduce its life ...


14

You might want to take a look at HWMonitor, which shows a wide variety of system sensors. In addition to temperature, it also shows system voltages, fan speeds, and power consumption - not only for your CPU, but all the hardware connected to your computer that has sensors (including your graphics cards and hard drives). For a more "advanced" tool (showing ...


13

Taking the side off a case can actually worsen things, depending on the design of the case. also, what is your actual CPU utilization? are you encoding lots and lots of video? does it only hit this temp occasionally? First thing, for the time being, underclock your CPU to make it run cooler. then, did you put thermal paste between the CPU and the Heatsink? ...


12

98C is at the thermal limit of your CPU - it is clearly overheating. The negative value likely shows that the thermal sensor failed at such a high temperature. FYI - normal operating temps should be anywhere between 30 C and 60 C (many consider 60 C to be hot). Your computer has a serious problem - you should check your CPU heatsink / fan to make sure they ...


12

Most modern processors do reduce their clockspeed when they get warm to try and cool themselves. I think it all started off with laptops and having dynamic fans and powersaving etc, but as they all pretty much run off the same set of chips then they've all started doing it. I used to have a fanless laptop that ran at 1.1ghz, unless it was warm and then it ...


12

You need to take the heat out of the room... ... I use the mains water pipes as my heat-sink! I have a slightly unusual set-up. My study was originally the kitchen which was relocated to an extension. As a result, the mains-water inlet still comes into the room. I have a water cooling system on an old machine that I want on all of the time and it's ...


11

GPUs will similarly suffer meltdowns running at high temperatures for prolonged periods of time. If you surf the hardware support sites, you will realize that the occurrence of GPU meltdown far exceeds CPU meltdowns. One advantage GPU has over CPU is that they usually have a larger area to play with in terms of heat dissipation, at the same time the GPU ...


11

The amount of heat generated by your computer can only be altered by either using more efficient components (ones that generate less heat) or by removing components. Heat is a byproduct of inefficiency, if you swap your CPU for one that consumes less power (look at wattage ratings) and remove extra items that consumer power (and in turn generate heat) then ...


11

If the fan is very cool and the processor is reporting very hot, I would first suspect the connection between the fan/heatsink and the processor package. Make sure the heatsink is properly seated with thermal paste. Let's get some terminology straight from Lavalys' KB: CPU Diode or Core temperature is the temperature measured across a temperature ...


11

61.4 degrees centigrade. Of course, this leaves zero margin for safety, and your motherboard may or may not record temps in half-degree increments. So I'd stick with 60 as a nice round number that happens to give you about 1.5-2 degrees of wiggle room. This would be the maximum upper limit of what your CPU would handle, you'll be pushing the envelope of ...


10

From the makers of CPU-Z: HWMonitor. Small, free, and can measure video card GPU temperatures.


10

Freeing memory will make your system slower, not faster. If you have 4GB with 2GB free, your system will be no faster than if you only had 2GB. Free memory does nothing, it just sits there. It's memory that your system is using that makes it faster. If your system is painful with 4GB in use, it is because the working set exceeds 4GB. Having memory free ...


10

A few facts: 1) A very cold battery will lose its charge quicker and so if you use a laptop on battery when it's cold you may have less runtime (NB: I am not talking about battery self-discharge) Lots of info here: http://www.mpoweruk.com/performance.htm 2) You will often see condensation on items brought in from cold environments but this is not the only ...


10

I use OpenHardwareMonitor which adds a Gadget you can customize


9

The the absolute max temperature for the Intel Core i5 mobile processor is 105°C. Source: Intel's datasheet for Intel Core (i3 i5 i7) processors.


9

When you go from cold to warm the longer you can wait for the unit to acclimatize from cold to warm temps the better. Usually the thing I am most worried about is condensation that it picks up being outside or even in the car on a long winter trip. That I try to remove with a chamios cloth prior to start up (probably a superstition but its habit now). I ...


9

First, what TIM (thermal paste) are you using? Have you checked it lately? If it is old and dried out, you need to clean it out and refresh it. If it is the stock interface material, you should never have been using it in the first place. Arctic Silver 5 is the standard for overclockers, there may be better (and more expensive) but you won't go wrong with ...


9

In general - it depends. ;) All CPU's and GPU's should have a maximum thermal limit specified on the manufacturers website. For example, this processor has a recommended maximum thermal limit of 75C. Although some GPU's don't specify, a generally acceptable maximum upper limit for GPU temperature is 90C (even though certain CPUs/GPUs can technically go ...



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