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HP Portable SSD P800 Review - High-Capacity and Speed

By: Chris Ramseyer | Thunderbolt in Storage | Posted: Aug 8, 2018 3:00 pm

Performance Testing


Product Comparison




We pulled our fastest portable and external flash SSDs to compare to the HP P800.


The MyDigitalSSD Boost only sells as a bare enclosure now but at one time you could purchase it loaded with two Samsung 512GB OEM mSATA SSDs preinstalled. The Samsung Portable SSD T5 is one of the most popular drives in this category today. The SanDisk Extreme Portable 900 is the USB 3.1 Gen 2 version of the HP P800. It uses a large housing like the P800 but instead of NVMe, it uses two SATA SSDs to deliver high transfer speeds.


The new SanDisk Extreme rolls the advanced technology back to SATA, but decreases the overall size by using a smaller internal drive.

The TEKQ Rapide is the only other Thunderbolt 3 portable SSD in this review. It also uses an internal NVMe SSD to reach very high transfer rates. On paper, the Rapide is faster than the P800 but our numbers show more balance between the two than the specifications lead us to believe.


Block Testing






The HP P800 is faster reading data than the TEKQ Rapide. The number most people should care about is 128KB, the standard large block used by the Windows file systems.



The tables turn writing data. The Rapide is faster when you move data to the portable drives. Both drives show nearly peak performance at the 128KB block size. Thunderbolt 3 allows the NVMe drives to move a lot of data in a short time.


Full LBA Span Performance






The 128KB sequential tests show a single large block file, like a movie, transfers to and from the drives. This is where the MLC flash in the Rapide comes to life and the 3D TLC in the P800 could use a little help. When you move several files at the same time, you increase the queue depths.


With NVMe SSDs the performance ceiling is much higher than the limits of a single transfer. The P800, as we saw in the block size test, is capable of achieving the same and even better performance than the Rapide in some real-world use cases. This is just not one of them.


File Transfer Tests








In real-world use, the two Thunderbolt 3 drives deliver nearly identical performance with each taking a win. The type of data really matters when transferring to the drives. The important takeaway from these tests is just how much faster the Thunderbolt 3 drives over the USB-connected models.

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