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Head-to-head · Hardware Diagnostic Software

Ultimate Boot CD vs MemTest86

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Ultimate Boot CD #6 in Hardware Diagnostic Software 8.2/10 Free plan Free plan✓ 5 of 6 features Try Ultimate Boot CD
MemTest86 #8 in Hardware Diagnostic Software 7.9/10 Free plan Free plan✓ 3 of 6 features Visit MemTest86

Ultimate Boot CD leads on 0 checks, MemTest86 on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreUltimate Boot CD · 8.2/10
  • Free planboth
  • Most featuresUltimate Boot CD · 5 of 6

Ultimate Boot CD scores higher on our rubric for hardware diagnostic software: 8.2 against 7.9 out of 10; our editors rank them #6 and #8.

Ultimate Boot CD is the better fit for free bootable diagnostic toolkit. MemTest86 is the better fit for advanced RAM testing and deployment.

  • Ultimate Boot CD fits best

    Free bootable diagnostic toolkit

  • MemTest86 fits best

    Advanced RAM testing and deployment

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Side by side

Feature Ultimate Boot CD 8.2/10 Visit ↗ MemTest86 7.9/10 Visit ↗
At a glance
Editor score 8.2 7.9
Ranking #6 in Hardware Diagnostic Software #8 in Hardware Diagnostic Software
Best for Free bootable diagnostic toolkit Advanced RAM testing and deployment
Pricing model Free Free plan + paid
Starting price Free $76/yr
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Desktop
Platforms Windows, Linux Windows, macOS, Linux
Support Community, Docs Email, Phone, Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Ultimate Boot CD 5/6 · MemTest86 3/6
Stress testing ✓ (best) Not checked yet
Memory testing ✓ ✓
Disk health checks ✓ (best) Not checked yet
GPU testing ✓ (best) Not checked yet
Bootable diagnostic media ✓ ✓
Diagnostic reports Not checked yet ✓ (best)
Specs
Platform support Multi-platform Multi-platform
Our review
Pros
  • Covers CPU, RAM, drives, SMART, video memory and hardware detection
  • Runs diagnostics independently of the installed operating system
  • Includes partitioning, disk-management and data-recovery utilities
  • Boots from USB or network media without an operating system
  • Supports 14 RAM algorithms, Row Hammer detection, and ECC features
  • Adds HTML reports, automation, and PXE deployment in Pro editions
Cons
  • UEFI boot requires enabling CSM
  • USB boot support is described as experimental
  • The project is in hibernation, with version 5.3.9 dated August 2020
  • Advanced capabilities require a paid Pro or Site edition
  • Testing runs as standalone bootable software, not inside an operating system
  • Updates, downloads, and support beyond 12 months require an extension
Our verdict

Ultimate Boot CD is a free bootable ISO that consolidates hardware diagnostics and system-maintenance utilities into one image. It is intended for troubleshooting Intel-compatible PCs and includes CPU stress and burn-in tools, RAM testing,…

Read the review →

MemTest86 is standalone memory diagnostic software for testing computer RAM for faults. It boots from USB or network media and supports x86, x86-64, and ARM64 systems, making it suitable for system builders, PC repair stores, overclockers,…

Read the review →
  1. Ultimate Boot CDHardware Diagnostic Software 8.2Free plan
  2. MemTest86Hardware Diagnostic Software 7.9Free plan

Strengths and trade-offs

  • Ultimate Boot CD — where it wins

    • Covers CPU, RAM, drives, SMART, video memory and hardware detection
    • Runs diagnostics independently of the installed operating system
    • Includes partitioning, disk-management and data-recovery utilities

    Where it doesn't

    • UEFI boot requires enabling CSM
    • USB boot support is described as experimental
    • The project is in hibernation, with version 5.3.9 dated August 2020

  • MemTest86 — where it wins

    • Boots from USB or network media without an operating system
    • Supports 14 RAM algorithms, Row Hammer detection, and ECC features
    • Adds HTML reports, automation, and PXE deployment in Pro editions

    Where it doesn't

    • Advanced capabilities require a paid Pro or Site edition
    • Testing runs as standalone bootable software, not inside an operating system
    • Updates, downloads, and support beyond 12 months require an extension

More comparisons

All hardware diagnostic software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update