![]() When stress testing your CPU, never use a single or just a couple of tests. Let’s begin with the best stress testing tools for your CPU. There are dozens of apps for stress and stability testing out there but read on if you want a comprehensive list of the best PC stress testing tools for CPU, RAM, & GPU instead of spending hours scouring for the best ones.īelow you’ll find a selection of CPU, GPU, and RAM options, including heavyweights such as Prime95, Cinebench, 3DMark Suite, Unigine Heaven, or MemTest86, but also a couple of exciting tools that do their job better than most others but aren’t as popular. Stress testing PC components is a highly recommended procedure if you decide to overclock or undervolt your CPU and GPU, as well as when testing RAM for stability after applying an XMP or overclocking memory above its XMP certified specs. You'll want to run it for several hours to have meaningful results.Purchases through our links may earn LEVVVEL a commission. Check for memory errors by clicking “Memstest” and hitting the play button. Memory is one of the most common components to fail, but is thankfully quite cheap and easy to swap out. This can be particularly important if you have a CPU with integrated graphics, as their temperatures can affect one another. While we're here, we may as well run a 3D stress test to check our GPU and processor combined. Select it and then press the play button. You can also run a CPU stress test with Linpack, which has a slightly different workload. Keep an eye out for anything out of the ordinary. One advantage of OCCT is its built-in monitoring tools, which mean you don't need additional software like Speedfan or HWMonitor. You'll notice from the splash screen that OOCT is more geared towards stress testing, with various utilization metrics. You can find the OCCT download on the OCBASE site. How to run a Windows 10 Stress Test with OCCT You may also want to stop if it finds an error. You can stop a Prime95 test at any time via “Test > Stop”. In SpeedFan or HWMointor, keep an eye on your temperatures to ensure they don't pass the recommended values. Information about the tests will be displayed, including any errors. ![]() Press “ OK”.Ī window will now open for every logical CPU on the system. As an added bonus, this test version may identify RAM errors. The Blend test will run a mixture of Smallest, Small, Medium, and Large FFTs for a larger variety when testing. In the future you can find the Prime95 stress test via “Options > Torture Test.”. When you start Prim95 the first time, the software will now tell you a little about itself, including its original purpose, the Great Internet Mersenne Prime Search (GIMPS) which is a hunt for Mersenne prime numbers. In the newly extracted folder, which is likely in your downloads, double-click “Prime95.exe”. You can download Prime95 from the official webiste. ![]() How to run a Windows 10 Stress Test with Prime95 As a result, Prime95 and OOCT stress tests should always be run in combination with a monitoring software like HWINFO or SpeedFan, and you should keep an eye on temperatures and other relevant factors. Going past a manufacturer's recommended power limits can result in system damage if it happens for a long period of time. You should also know that Windows 10 stress test software can potentially push components not just to their limits, but past them. Instead, choose one or the other or run one after another (with a short cool-down period). Firstly, you should keep an eye on the temperature of your device with a tool like SpeedFan, but you should also never run more than one stress test at once. Either way, it's worth noting some best practices. Though OCCT stress tests will stop automatically when the system is unstable, Prime95 doesn't. Ideally, all of these should be combined with every-day intensive tasks such as 3D rendering or CPU-heavy games to test in a variety of different workloads. After all, they both have slightly different workloads and could find errors that the other doesn't. You may actually get value out of using both tools. (Thanks Niklas Holm for sharing your experience!) OCCT works by varying the load very fast, which puts more stress on the VRMs to keep up, triggering VCore undershoot and overshoot as the loads goes up and down. The choice of OCCT or Prime95 for stress testing is largely down to preference, but there are differences. ![]() Prime 95 and OCCT are the most popular tools for Windows 10 stress tests, making it fast, easy, and safer. A CPU stress test forces your processor to work overtime to root out any cooling, overclocking, or other issues. It's quite rare that general users use their hardware at its full capacity, and that means you can easily miss problems that weren't apparent when you bought a device or set an overclock. 2 How to run a Windows 10 Stress Test with OCCT.1 How to run a Windows 10 Stress Test with Prime95. ![]()
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