Go to the submit form and enter this information along with the spesifications of your computer. You should now have three different temperature readings idle, load and hard drive temperature. Immediately after you've finished the load temperature recording, you can write down the drive temperature reported by the S.M.A.R.T sensor inside the drive. Note: We're not looking for the peak temperature but the average temperature after the fans has kicked in and cooled the machine while under heavy load. After 10 minutes write down the load temperature (averaged) shown in monitoring tool. You can see the temperature raising if you use a tool with graphing. Let the machine run for 10 minutes for the temperature to stabilize. You will see that there are two processes called 'yes' using around '100%' cpu usage each. To verify that both CPU cores are under load, starting the Activity Monitor application in the Utilities folder. Therefore you need to open a new Terminal window by selecting File -> New and type the command again, like shown below: But with dual-core processors, there are two CPU processors and ONE application can only work on ONE core at a time. This will make one CPU core work as fast as it can. This will make sure you are not getting any outliers in your readings. ![]() Open a new terminal for each processor core.įor a consistent result, re-run the load temperature measurement three times. Open terminal and type 'yes >/dev/null', to abort press control+c. yes command-line tool (preferred method) - This repeats a "yes" command as fast as the processor is able and makes for a reasonable good load, included in OS X.MacOH - Ultimate tool for stress testing and testing the thermal system on any Mac, possible to check if prosessor is throttled under load, terminal based and automated, outputs a really handy graph, free.Now it's time to really load the CPU cores to maximize the thermal heat output. Note about Core Duo CPUs: If your temperature does not exceed 30 ☌, you are probably affected by the AE18 bug. This is to avoid incorrect readings of the idle temperature.Īfter 10 minutes, write down the idle temperature (average) shown in temperature monitoring tool. If you have excessively many background processes or widgets open other than what comes with a basic Mac OS X install, try to close these to simulate an average configuration of Mac OS X. Let the machine idle for 10 minutes without any applications open other than the monitoring application. Enable only the CPU core(s), GPU and drive sensors, disable any other sensor readings. If it has a graph, make sure to set the update interval to 1 second. Now start your favorite monitoring application. CoreDuo Temp - Simple tool to display the Intel Core Duo processor temperature, free.SpeedIt Extension - Kernel extension for 2006 to 2008 Macs, works with CoreDuo Temp and Hardware Monitor, free.MacBook/Pro Fan Control - Tool to make custom fan control curves, includes temperature sensor read-out, good for Macs up to 2009, free.iStat Pro - Widget that shows system essentials, good for Macs up to 2010, free.Macs Fan Control - Don't let the name deceive you, this tool includes temperature sensor readouts of most Macs, including the latest models, free.Temperature Gauge - Simple and quick overview over all the temperature sensors on the system, chart temperature over time, average read-outs, 20USD App Store.Intel Power Gadget - Intels official power, cpu usage and temperature monitoring tool, limited graphing, supports most Macs from 2012 and later, free.iStat Menus - Complete package to monitor every prosess, storage, memory and sensors available on any Mac, including the latest models, free 15 day trail mode. ![]() Lacks some processor support, not all CPU temperature sensors supported, free
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