SpeedOut is a lightweight and free USB speed test tool built specifically for benchmarking USB flash drives. It accurately tests read and write speeds of USB drives, giving users a real world view of performance.
Similar in functionality to tools like CrystalDiskMark and USB Flash Benchmark, this USB speed tester provides a simple and portable solution for quick USB benchmarking.
SpeedOut USB Speed Test and Benchmark Tool
Here’s an example of SpeedOut benchmarking a SanDisk Extreme Pro 256GB USB flash drive, well known for high speed and reliability:
This utility is a standalone executable (no installation required), making it fully portable USB benchmark software. You can carry it on any drive and run directly from there.
What is SpeedOut?
SpeedOut USB Speed Test is a benchmarking tool for accurately measuring USB flash drive performance. It is designed to produce precise speed results without being affected by file system overheads or formatting requirements.
Key Features of SpeedOut
- Clean and intuitive interface, beginner-friendly
- One-click operation — press “Start” to begin testing
- Performs four read and four write operations for detailed benchmarking
- Graphical charts displaying USB speed results clearly
- No data loss — unlike tools that overwrite data during testing
- Works without reformatting drives — safe and efficient
- Best for casual users and pros seeking quick USB drive performance stats
Pro Tip: Avoid using the mouse or keyboard during testing to ensure accurate speed results.
SpeedOut Download, Compatibility & Specs
- Official Page: Archived Project Site
(Note: the project is currently inactive) - Developer: M. Bentefor
- File Size: Less than 2 MB (Portable .exe)
- Supported OS: Windows 11, 10, 8, 7
- License: Freeware
- Category: USB Utility, Benchmarking
- Rating: ★★★★★
- Download Link: Download SpeedOut
SpeedOut vs. Other USB Speed Test Tools
Below is a quick comparison between SpeedOut, CrystalDiskMark, and USB Flash Benchmark. While each has its strengths, SpeedOut stands out for being lightweight, portable, and user friendly without risking data loss.
| Feature | SpeedOut | CrystalDiskMark | USB Flash Benchmark |
|---|---|---|---|
| Portability | ✅ No installation required | ❌ Requires installation | ✅ Portable version available |
| Ease of Use | ✅ One-click test | ⚠️ More advanced UI | ⚠️ Moderate learning curve |
| Graphical Speed Results | ✅ Yes (Simple Graph) | ✅ Yes (Detailed Graphs) | ✅ Yes |
| Tests Read/Write Speeds | ✅ Yes | ✅ Yes | ✅ Yes |
| Risk of Data Loss | ✅ Safe — no data overwritten | ⚠️ Some operations overwrite data | ⚠️ May require formatting |
| Supports External HDDs | ✅ Yes | ✅ Yes | ✅ Yes |
| File Size | < 2 MB | ~3 MB | ~5 MB |
| Free to Use | ✅ 100% Free | ✅ Freeware | ✅ Freeware |
Note: All tools are reliable for USB benchmarking, but SpeedOut offers the fastest and simplest way to test USB drives without setup or complications.
Why Benchmark Your USB Drives?
Understanding the true performance of your USB flash drive or external storage device is more important than ever. With the increasing demand for fast data transfer, especially when working with large files like videos, high resolution images, or backups; knowing your device’s read and write capabilities helps avoid bottlenecks and wasted time.
Benchmarking tools like the one discussed here provide valuable insight into how well your storage media performs under real-world conditions. Whether you're troubleshooting slow file transfers or just curious about the speeds advertised by manufacturers, these tools offer measurable results you can trust.
While there are several utilities available to analyze flash drive speed, many users prefer portable software that doesn't require installation, protects existing data, and delivers accurate output quickly. Tools that meet these criteria can be a practical addition to your digital toolkit, especially for IT professionals and enthusiasts.
Final Thoughts on SpeedOut
SpeedOut remains one of the best free tools for USB flash drive benchmarking due to its accuracy, simplicity, and portability. Unlike other benchmarking utilities that can overwrite or delete files, it runs safe read and write tests without risking the loss of user data. Its no installation, no fluff approach makes it perfect for quick USB performance checks.
Even though the original project appears abandoned, the tool still works flawlessly on modern systems. If you're seeking a reliable, no nonsense alternative to CrystalDiskMark or USB Flash Benchmark, give it a try. It's fast, free, and does exactly what it promises: test USB speed accurately and instantly.