Kioxia BG5 1TB SSD Review

To test the real-life performance of a drive we use a mix of folder/file types and by using the FastCopy utility (which gives a time as well as MB/s result) we record the performance of the drive reading from & writing to a 256GB Samsung SSD850 PRO.

• 100GB data file.
• 60GB iso image.
• 60GB Steam folder – 29,521 files.
• 50GB File folder – 28,523 files.
• 21GB 8K Movie demos.
• 12GB Movie folder – 24 files (mix of Blu-ray and 4K files).
• 11GB 4K Raw Movie Clips (8 MP4V files).
• 10GB Photo folder – 621 files (mix of png, raw and jpeg images).
• 10GB Audio folder – 1,483 files (mix of mp3 and .flac files).
• 5GB (1.5bn pixel) photo.
• Blu-ray movie.

Our real-life file transfers were dealt with by the Kioxia BG5 without any problems. The large file transfers averaged 545MB/s for writes and 455MB/s for writes. The slowest transfers were for the 50GB file folder, which is nearly always the case.

To get a measure of how much faster PCIe NVMe drives are than standard SATA SSD's we use the same files but transfer to and from a 2TB Kioxia Exceria Plus drive.

Switching over to the NVMe to NVMe file transfer tests saw the bandwidths rocket upwards and transfer times drop dramatically as you might expect. Five of the write speeds topped 2.6GB/s, the fastest being the 2,674MB/s for the 5GB image transfer. Four of the read transfers topped 2.6GB with two, the 12GB Movie and 8K Movie Scenes folders topping 2.7GB/s.

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