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SanDisk Extreme Pro Portable SSD 1TB Review

To test 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 drive reading from & writing to a 256GB Samsung SSD850 PRO.

We use the following folder/file types:

  • 100GB data file.
  • 60GB iso image.
  • 60GB Steam folder – 29,521 files.
  • 50GB File folder – 28,523 files.
  • 12GB Movie folder – (15 files – 8 @ .MKV, 4 @ .MOV, 3 @ MP4).
  • 10GB Photo folder – (304 files – 171 @ .RAW, 105 @ JPG, 21 @ .CR2, 5 @ .DNG).
  • 10GB Audio folder – (1,483 files – 1479 @ MP3, 4 @ .FLAC files).
  • 5GB (1.5bn pixel) photo.
  • BluRay Movie – 42GB.
  • 21GB 8K Movie demos – (11 demos)
  • 16GB 4K Raw Movie Clips – (9 MP4V files).
  • 4.25GB 3D Printer File Folder – (166 files – 105 @ .STL, 38 @ .FBX, 11 @ .blend, 5 @ .lwo, 4 @ .OBJ, [email protected] .3ds).
  • 1.5GB AutoCAD File Folder (80 files – 60 @ .DWG and 20 @.DXF).



SanDisk’s Extreme Pro SSD didn’t have any real problems dealing with our real-life file transfer tests. It handles larger file sizes much more efficiently than smaller ones that make up the 60GB Steam, 50GB File and 10GB Audio folders.

To get a measure of how much faster PCIe NVMe drives are than standard SATA SSDs we use the same files but transfer to and from a 512GB Kioxia RD400:


Transferring files to and from another NVMe drive saw read speeds of over 900MB/s for the folders containing larger file sizes. The drive did seem to stumble when transferring the 5GB photo back to the RD400.

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