Side by side
FurMark vs Prime95
Both stand on hardware diagnostic software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
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.
Visit FurMark 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.
Visit Prime95The facts
| FurMark | Prime95 | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Windows | Linux, Mac, Self-hosted, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | furmark.app | mersenne.org |
| On hardware diagnostic software | #5 of 26 | #9 of 26 |
FurMark: what it does well
- Free download for personal testing on Windows 10/11.
- Includes 1080p, 1440p, and 4K benchmark presets.
- Offers OpenGL and Vulkan rendering paths where available.
- Portable edition runs from a folder or USB stick.
- Supports artifact-oriented checks for visual glitches.
What to know first
- Targets Windows only; it is not a macOS or Linux tool.
- Tests require temperature monitoring and supervision.
Prime95: what it does well
- Free to use indefinitely on authorized computers.
- Can check CPU and L1, L2, and L3 cache stability.
- PrimeNet provides work assignments and remote assignment management.
- Version 30.3 introduced resource controls.
What to know first
- The Windows service build is for Windows Server experts only.
- The source code is described as completely non-portable.
- The software is provided without warranty.
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