ROG product family

Phidisk is a relatively new brand that focuses solely on storage technology – and they originated from the humble island of Penang, Malaysia. There are multiple series within the Phidisk family, and the PhantomKnight is considered their entry-level range.

Thanks to Phidisk for providing us a review unit of the PhantomKnight. The one we have here is at 120GB.

Acer Nitro 5


Phidisk kept things pretty simple with the PhantomKnight in terms of packaging. At the front, we can see that it comes with a contrasting dark color with orange font and accents all around. It is also highlighted that the Phidisk PhantomKnight comes with a 3-year warranty.

Phidisk PhantomKnight

At the back, there aren’t much to talk about except for the simple list of specs – which we will go through later.

Phidisk PhantomKnight

Opening up the the box we have the PhantomKnight SSD itself sitting on a recessed cardboard piece. This acts as a shock absorber to prevent damages during shipment – and it is in a very bright orange color too.


For every series of the Phidisk SSD, there is a character to represent that particular series. The Phidisk PhantomKnight series has a medieval knight in armor that is apparently having a joust.

Phidisk PhantomKnight

The character design pad-printed on the SSD itself. With bright colors on the SSD and tempered glass side panels on PC cases, the PhantomKnight can be shown to the world in its full glory.


Phidisk keeps things simple here. There are only a few information that most of us are concerned about:

  • Form factor: 2.5-inch
  • Host interface: SATA III
  • Read speed: up to 540MB/s
  • Write speed: up to 450MB/s

I do wish that Phidisk would provide the specific read/write speeds of each capacity of the PhantomKnight SSD. As capacities increase, the read/write speeds changes as well. As we have confirmed with Phidisk, the PhantomKnight SSD has a built-in DRAM cache although they did not specifically highlight it on the packaging.



From here we can see that the performance was affected when the capacity is filled to 85%. Both the random read and write speeds are affected here.


Looking at AS SSD we can see why the random read/write speeds slowed down when the SSD is filled up to 85% – that is because the access time has increased. Still, this access time is much faster than any hard disk in the market.


As ATTO uses compressible files, we see no significant difference between 0% capacity used and 85% capacity used.

Real use case scenario

Usually when we copy a bunch of files – mixed with compressible and incompressible file types with various file sizes. This test is closer to how we use our computers from day to day as we deal with files with various sizes. The same set of tests is done first with a freshly formatted SSD, followed by filling it up to 85% of its total capacity.

With a mixed set of files, we can see that the speed of the PhantomKnight stabilizes 339MB/s read and 446MB/s write. The performance is about the same in both different scenario, as we’ve mentioned earlier.

Unlike most of the entry-level SSD that doesn’t come with a built-in DRAM cache, the PhantomKnight has a built-in DRAM cache.

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