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Best PC stress testing tools in 2026

PC stress testing tools place a computer under sustained load so you can observe system behavior. This guide is for people choosing software on a budget.

  1. 1

    3DMark

    Free plan AndroidiPhoneMac+1

    3DMark combines broad hardware coverage with configurable tests, comparison tools, monitoring, and game frame-rate estimates.

    7.7 Free plan Visit site
  2. 2

    fio

    by fio
    Free plan LinuxMacSelf-hosted+1

    fio offers detailed workload controls, verification, and several output formats at no cost. Its HTTP direct-I/O depth limit matters for users planning those workloads.

    7.5 Free plan Visit site
  3. 3

    Autoruns

    Free plan Windows

    Choose Autoruns if you need a free Windows tool to inspect startup items across many system locations and manage their configurations.

    7.2 Free plan Visit site
  4. 4

    MemTest86

    Free plan LinuxMacSelf-hosted+1

    MemTest86 provides bootable RAM diagnostics, with additional automation and deployment options in paid editions. Check the UEFI and processor requirements first, especially for Apple Silicon Macs.

    7.2 Free plan · paid from $116 Visit site
  5. 5

    HCI MemTest

    Free plan LinuxWindows

    HCI MemTest offers a free memory check, with paid Pro and Deluxe editions adding automation, logging, and bootable testing. Choose Deluxe only if the PC supports CSM or legacy BIOS boot.

    7.1 Free plan · paid from $5 Visit site
  6. 6

    Intel VTune Profiler

    Free plan LinuxSelf-hostedWindows

    VTune Profiler brings code hotspots, hardware analysis, and memory investigation into a free profiling tool.

    7.1 Free plan Visit site
  7. 7

    Novabench

    Free plan LinuxMacWindows

    Choose Novabench if you want a free desktop application that benchmarks CPU, GPU, memory, and disk and supports online comparisons.

    7.1 Free plan Visit site
  8. 8

    Prime95

    Free plan LinuxMacSelf-hosted+1

    Prime95 supports both Mersenne-prime project work and sustained CPU stability checks. Review the service-build guidance and the as-is warranty terms before use.

    7.1 Free plan Visit site
  9. 9

    FurMark

    Free plan Windows

    Choose FurMark if you need a free Windows tool for GPU stress testing, benchmarking, and artifact checks. Look elsewhere if you need a macOS or Linux tool.

    7.0 Free plan Visit site
  10. 10

    stress-ng

    Free plan AndroidLinuxMac+2

    stress-ng offers extensive ways to load-test computer subsystems and operating system interfaces across many architectures.

    7.0 Free plan Visit site
  11. 11

    OCCT

    Free plan LinuxWindows

    OCCT provides testing, benchmarking, and monitoring for Windows and Linux PCs. Personal use is free, while business use requires a professional license with pricing available on request.

    6.9 Free plan · paid from €4.50/mo Visit site
  12. 12

    UNIGINE Heaven Benchmark

    by UNIGINE Heaven Benchmark
    Free plan LinuxMacWindows

    Heaven Benchmark covers GPU performance, stability and cooling workloads, with custom profiles and several export options.

    6.8 Free plan · paid from $14.95 Visit site
  13. 13

    UNIGINE Superposition Benchmark

    by UNIGINE Superposition Benchmark
    Free plan LinuxWindows

    Superposition combines GPU benchmarking with custom profiles, automation, and a comparison database.

    6.6 Free plan · paid from $19.95 Visit site
  14. 14

    y-cruncher

    Free plan LinuxWindows

    y-cruncher combines large calculations with benchmarking and stress testing, and supports Windows and Linux.

    6.6 Free plan · pricing on request Visit site
  15. 15

    AIDA64

    Free trial AndroidiPhoneWindows

    AIDA64 offers separate editions for personal diagnostics and network inventory or administration.

    6.4 From $65.95 · 30-day trial Visit site
  16. 16

    clgpustress

    Free plan LinuxWindows
    6.2 Free plan Visit site
  17. 17

    GPU Magick

    Free plan LinuxMacWindows
    6.2 Free plan Visit site
  18. 18

    ClawHammer

    Free plan Windows
    6.1 Free plan Visit site
  19. 19

    FurMark

    by Geeks3D
    Free plan WindowsLinux
    6.1 Visit site
  20. 20

    CoreCycler

    Free plan Windows
    6.0 Free plan Visit site
  21. 21

    CoreRipperX

    Free plan Windows
    6.0 Free plan Visit site
  22. 22

    CPUID powerMAX

    Free plan Windows
    6.0 Free plan Visit site
  23. 23

    gpu-burn

    Free plan LinuxWindows
    6.0 Free plan Visit site
  24. 24

    GtkStressTesting

    Free plan Linux
    5.8 Free plan Visit site
  25. 25

    HeavyLoad

    Free plan Windows
    5.8 Free plan Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare supported platforms, free plans, trial limits and paid prices. If reading or changing code matters, check the project licence before choosing.

Questions

Which platforms are covered?

Tools on this list run on Windows, Linux, macOS, self-hosted setups, Android and iOS.

Are free PC stress testing tools available?

Yes. Tools on the list offer free plans, including 3DMark, Autoruns, ClawHammer, CoreCycler and FurMark.

Does any tool offer a free trial?

AIDA64 lists a 30-day trial. Its pricing note starts at $65.95.

What paid prices are listed?

AIDA64 starts at $65.95, with a 30-day trial. BurnInTest starts at $149.

How can I check whether I may change the code?

Read the project's software licence and terms on its project page before using or modifying the code.

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