An incredibly lightweight, but powerful software solution meant to test the condition of your Solid State Drive in order to detect possible issues.
- AS SSD Benchmark
- Version : 2.0.7316.34247
- License :Freeware
- OS :Windows All
- Publisher :Alex Schepeljanski
AS SSD Benchmark is a lightweight, no-installation-needed utility used to benchmark the performance of SSDs (Solid State Drives). It is especially useful for measuring sequential and random read/write speeds, access times, and drive responsiveness under heavy I/O loads.
📦 What AS SSD Benchmark Measures
| Test Type | Description |
|---|---|
| 🔁 Sequential | Measures large file read/write speeds (MB/s) |
| 🎯 4K | Tests random small-file performance using 4K blocks (important for OS speed) |
| ⚖️ 4K-64Thrd | Simulates 64 threads accessing 4K blocks (tests drive controller & queueing) |
| ⏱️ Access Time | Time taken to access data (lower is better) |
| 📊 Score | Provides a general performance score for comparison |
| 🧪 Compression Test | Shows performance across different compressibility levels (0–100%) |
🛠️ How to Use AS SSD Benchmark
✅ 1. Download the Tool
- Official source: https://www.alex-is.de/PHP/fusion/downloads.php?cat_id=4
- No installation needed — it’s a portable EXE file.
⚙️ 2. Launch and Select Drive
- Double-click
AS-SSD.exe. - Select your SSD from the drop-down list at the top.
- AS SSD will automatically detect the drive and its partitions.
▶️ 3. Run the Benchmark
- Click Start to begin the test.
- Tests typically take 1–5 minutes, depending on the drive.
Optional:
- Click “File” > Copy Benchmark: Tests copy performance with ISO, Program, and Game-type files.
- Click “Tools” > Compression Benchmark: Graphs read/write speed over different data compressibility levels.
📊 Understanding the Results
| Test | Good Range (SATA SSD) | Good Range (NVMe SSD) |
|---|---|---|
| Sequential Read | 400–550 MB/s | 1500–7000+ MB/s |
| Sequential Write | 400–520 MB/s | 1000–6000+ MB/s |
| 4K Read | 25–40 MB/s | 40–80+ MB/s |
| 4K Write | 70–120 MB/s | 100–300+ MB/s |
| Access Time (Read) | 0.03–0.1 ms | 0.01–0.03 ms |
| Access Time (Write) | 0.05–0.2 ms | 0.02–0.05 ms |
- A higher score and lower access time = better performance
- Performance can vary based on drive type, interface (SATA/NVMe), and system load
💡 Tips
- Close background apps before running the test for accurate results.
- Avoid benchmarking on drives with low free space or when thermal throttling might occur.
- Use administrator rights for better compatibility with some drives.
- If you see “storahci” in the driver info, your system is using Microsoft’s default AHCI driver — consider installing the latest Intel or AMD storage controller drivers for best performance.
🔍 Alternatives
- CrystalDiskMark – More modern UI, similar tests
- ATTO Disk Benchmark – Better for professional/enterprise testing
- Anvil’s Storage Utilities – Comprehensive drive analytics including latency and IOPS