AS SSD Benchmark (SSD solid state drive transfer speed test)

A transfer speed test tool specifically designed for SSD (Solid State Drive). It can test the transmission speed of reading and writing seq files, 4K size files, files larger than 4K and large files on solid state drives. It is the earliest solid state drive speed test tool and a very authoritative SSD speed test software. It can not only detect For the speed of SSD, you can also check whether the SSD is 4K aligned, whether AHCI is turned on, etc. After the test, a score will be given for comparison with other SSDs. It is recommended for friends who have newly purchased SSDs to test it.

Of course, it can also be used to test ordinary hard drives.

Is the SSD already 4K aligned?

The main interface of AS SSD Benchmark has a red BAD indicating that 4K is not aligned.

As shown in the picture above, without 4K alignment SanDisk 128G, the 4K writing speed is only 44M/s (the speed is almost doubled after 4K alignment, but unfortunately the picture has been lost). Although it is still very fast compared to mechanical hard disks, it cannot bring out the performance of SSD applications.

The terrible speed of mechanical hard drives

AS SSD Benchmark score calculation formula:

Comprehensive score = continuous write*0.15 + continuous read*0.1 + 4k single queue depth read*2 + 4k single queue depth write + 4k 64 queue depth write + 4k 64 queue depth read*1.5 Read score = sequential reads * 0.1 + 4k single queue depth reads + 4k 64 queue depth reads Write score = consecutive writes * 0.1 + 4k single queue depth writes + 4k 64 queue depth writes

Update log:

AS SSD Benchmark v2.0.6845 English Green Version

* NVMe-SSD-Support

* 4K LBA-Sektoren support

* Mindestens .NET-Framework 4.6 erforderlich

+ Erhöhung der Genauigkeit bei schnellen SSDs