Head-to-head · Disk Defragmentation Software
Disk SpeedUp vs UltraDefrag
Disk SpeedUp leads on 1 check, UltraDefrag on 0, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreDisk SpeedUp · 9.2/10
- Free planonly Disk SpeedUp
Disk SpeedUp scores higher on our rubric for disk defragmentation software: 9.2 against 8.6 out of 10; our editors rank them #2 and #4.
Disk SpeedUp offers free plan; UltraDefrag doesn't.
Disk SpeedUp is the better fit for free Windows defragmentation and SSD optimization. UltraDefrag is the better fit for windows users needing portable and CLI tools.
- Disk SpeedUp fits best
Free Windows defragmentation and SSD optimization
- UltraDefrag fits best
Windows users needing portable and CLI tools
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Side by side
| Feature | Disk SpeedUp 9.2/10 Visit ↗ | UltraDefrag 8.6/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 9.2 | 8.6 |
| Ranking | #2 in Disk Defragmentation Software | #4 in Disk Defragmentation Software |
| Best for | Free Windows defragmentation and SSD optimization | Windows users needing portable and CLI tools |
| Pricing model | Free | Paid |
| Starting price | Free plan | — |
| Free plan | ✓ (best) | — |
| Free trial | — | — |
| Deployment | Desktop | Desktop |
| Platforms | Windows | Windows |
| Support | Email, Docs | Email, Docs · 24/7 |
| Built for | Solo, Small business | Solo, Small business, Mid-market, Enterprise |
| Features Disk SpeedUp 3/3 · UltraDefrag 3/3 | ||
| Scheduled optimization | ✓ | ✓ |
| Automatic optimization | ✓ | ✓ |
| Boot-time optimization | ✓ | ✓ |
| Specs | ||
| Drive types | Both | Both |
| Filesystem support | Multi-filesystem | Multi-filesystem |
| Maximum drive count | Not checked yet | Not checked yet |
| Our review | ||
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| Cons |
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| Our verdict | Disk SpeedUp is a free Windows utility for analyzing, defragmenting, and optimizing disk drives. It supports both HDD and SSD storage, making it suitable for Windows users who want one tool for visual fragmentation analysis, conventional… Read the review → |
UltraDefrag is disk defragmentation and optimization software for Windows computers and Windows Server systems. It is suited to users who need more control than basic drive maintenance provides, including scheduled or idle automation,… Read the review → |
Strengths and trade-offs
Disk SpeedUp — where it wins
- Supports both HDD and SSD optimization
- Includes scheduled, automatic, and boot-time defragmentation
- Offers exclusion lists and multiple optimization modes
Where it doesn't
- Runs on Windows systems only
- Not open source
- Focused on disk defragmentation and optimization
UltraDefrag — where it wins
- Supports HDDs and SSDs, including TRIM for SSDs
- Offers scheduled, idle, boot-time, file-level, and CLI operations
- Includes portable tools and SMART disk health monitoring
Where it doesn't
- Paid software with no free plan
- Windows-only platform support
- Standard licensing covers up to 3 computers
- Disk SpeedUp9.2/10 · Free plan
A free Windows tool for HDD and SSD analysis, defragmentation, and optimization.
Visit Disk SpeedUpFull verdict → - UltraDefrag8.6/10 · Paid
A Windows-focused optimizer with automation, boot-time jobs, CLI access, and portable tools.
Visit UltraDefragFull verdict →
More comparisons
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- Disk SpeedUp vs UltimateDefrag 6
- Disk SpeedUp vs Puran Defrag
- Disk SpeedUp vs WinContig
- O&O Defrag vs UltraDefrag
All disk defragmentation software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update




