![]() Weve adjusted the CPU and the cooling system to better suit this article. HeavyLoad puts your workstation or server PC under a heavy load and lets you test whether they will still run reliably. It can be installed on any edition of Windows and client/server versions (32-bit and 64-bit) currently supported by Microsoft. If youd like more detail about our general approach, check that piece out. So, to run a CPU stability test you have to: Start the CPU Stress Test at maximum load and wait 30-60 seconds. The freeware stress test tool HeavyLoad was developed to bring your PC to its limits. In case you are wondering, it basically means "start at number 0, increment by 1 until it reaches 10000", which translates to 10000 loop cycles. We introduced our new test system and methodology in How We Test Graphics Cards. The last number (in the finite loop) can be adjusted to adjust the running time. The numbers inside the parentheses can be replaced, e.g. Warning: Those are infinite loops, which you may have trouble closing. ![]() That could have your CPU running at 100%. You could try running several of these in parallel, for example the following in a batch file: start for /l %%a in (0,0,1) do echo a Its optional, but required to check your account details, computer status and performance statistics and to assign computers to your user ID. Running for /l %a in (0,0,1) do echo a in a command prompt (infinite loop printing a) has the observed effect of starting a conhost.exe running at 10-20% CPU load on Windows 7 on a low-end mobile i5. CpuStres is a utility that can be used to simulate CPU activity by running up to 64 threads in a tight loop.
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