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Best Hardware Diagnostic Software in 2026

Hardware diagnostic software helps you examine computer components and review the kinds of tests and results each tool supports. Compare disk health checks, memory testing and GPU testing, along with stress testing, to understand the scope of diagnostics listed. Bootable diagnostic media and platform support provide additional ways to distinguish the options, while diagnostic reports may be useful when reviewing findings. MemTest86, smartmontools and stress-ng are among the entries shown. Free-plan availability and “Paid from” pricing round out the comparison as you consider which capabilities match your troubleshooting needs.

  1. 1

    GSmartControl

    Free plan LinuxMacWindows

    Choose GSmartControl for free graphical inspection of SMART data and drive tests on supported ATA or NVMe hardware.

    7.4 Free plan Visit site
  2. 2

    3DP Chip

    Free plan Windows

    3DP Chip combines component identification, driver downloads, and backup and restore tools in a free Windows utility.

    7.3 Free plan Visit site
  3. 3

    Hard Disk Sentinel

    Free plan LinuxWindows
    7.2 From $22 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

    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.

    7.1 Free plan 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

    HDAT2

    Free plan Windows

    HDAT2 offers broad device and file-system diagnostics, along with drive-capacity and SMART functions. Its main program requires DOS, and the Windows demo has substantial command and file-level limits.

    7.0 Free plan Visit site
  8. 8

    MemTest86+

    Free plan LinuxMacWindows

    MemTest86+ offers a focused way to test system memory outside the operating system. Check Secure Boot and USB compatibility before choosing how to boot it.

    7.0 Free plan Visit site
  9. 9

    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.

    7.0 Free plan Visit site
  10. 10

    HDDScan

    Free plan Windows

    HDDScan combines drive tests, SMART analysis and temperature monitoring in a free Windows utility.

    6.9 Free plan Visit site
  11. 11

    stress-ng

    Free plan AndroidLinuxMac+2

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

    6.9 Free plan Visit site
  12. 12

    MemTest64

    Free plan Windows

    Choose MemTest64 if you need a free way to check memory from within a 64-bit Windows system, with control over how much memory is tested.

    6.8 Free plan Visit site
  13. 13

    PC-Doctor Toolbox

    Free plan WebWindows

    PC-Doctor Toolbox combines hardware testing, system history, and monitoring for supported Windows PCs.

    6.8 Free plan · paid from $19.99 Visit site
  14. 14

    smartmontools

    Free plan LinuxMacWindows

    smartmontools provides command-line health checks and daemon-based monitoring across a wide range of listed systems. Its scope is focused on SMART reporting, tests, and warnings.

    6.8 Free plan Visit site
  15. 15

    Ultimate Boot CD

    Free plan LinuxSelf-hostedWindows

    UBCD packages several diagnostic utilities in one bootable image, with checksums and customization guidance available.

    6.8 Free plan Visit site
  16. 16

    HardInfo2

    Free plan Linux

    HardInfo2 combines Linux system information with benchmark and report tools, including CLI support for multiple machines.

    6.7 Free plan Visit site
  17. 17

    HP PC Hardware Diagnostics

    Free plan Windows

    HP PC Hardware Diagnostics provides component checks in Windows and a separate UEFI route for systems that cannot boot.

    6.6 Free plan Visit site
  18. 18

    Piston

    Free plan Android

    Piston offers core code and sensor reading at no listed plan charge, with additional tools through a one-time Premium purchase.

    6.6 Free plan Visit site
  19. 19

    Speccy

    Free plan Windows

    Speccy combines hardware summaries, temperature readings, and exportable system details in a Windows tool.

    6.5 Free plan · paid from $19.95 Visit site
  20. 20

    CrystalDiskInfo

    Free plan Windows
    6.1 Free plan Visit site
  21. 21

    Blackwire Hardware Diagnostics

    Free plan
    6.0 Free plan · paid from $9.99 Visit site
  22. 22

    Eurosoft Pc-Check

    Paid LinuxSelf-hostedWindows

    Pc-Check provides UEFI and Windows-based options for configurable hardware diagnostics, with report exports and support for testing compatible ARM hardware.

    5.8 From €98.98/yr Visit site
  23. 23

    HD Tune Pro

    Free trial Windows

    HD Tune Pro covers performance testing, diagnostics, health reporting, monitoring, and secure erasure in one Windows utility.

    5.8 From $29.95 · 14-day trial Visit site
  24. 24

    PassMark DiskCheckup

    Free plan Windows
    5.6 Free plan Visit site
  25. 25

    Karhu RAM Test

    Paid Windows

    Karhu RAM Test provides focused memory stress testing with broad capacity support and version 2.0 monitoring and benchmark additions.

    5.2 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

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