Phison PS5018-E18 Gen 4×4 NVMe SSD Controller Prototype First Look (2TB) – Phison Raises the Bar


Crystal Disk Benchmark is used to measure read and write performance through sampling of random data which is, for the most part, incompressible. Performance is virtually identical, regardless of data sample so we have included only that using random data samples.



Crystal DiskMark is much better with 7GB/s read and 6.7GB/s write and just under 800K IOPs.


The toughest benchmark available for solid state drives is AS SSD as it relies solely on incompressible data samples when testing performance. For the most part, AS SSD tests can be considered the ‘worst case scenario’ in obtaining data transfer speeds and many enthusiasts like AS SSD for their needs. Transfer speeds are displayed on the left with IOPS results on the right.


Anvil’s Storage Utilities (ASU) are the most complete test bed available for the solid state drive today. The benchmark displays test results for, not only throughput but also, IOPS and Disk Access Times. Not only does it have a preset SSD benchmark, but also, it has included such things as endurance testing and threaded I/O read, write and mixed tests, all of which are very simple to understand and use in our benchmark testing.

This is easily the highest Anvil score we have ever reached with a write speed of just under 6GB/s.  Anvil is one of the two most demanding synthetic benchmark programs after all.  Other reviewers with more powerful Ryzen processors have reached as high as 27k points which has never been done prior.


  1. This is already amazing; however I am very eager to see you get the finished product with the newer Micron B47R TLC memory and the latest firmware for testing.
    Have you noticed much difference heat-wise between the E18 and E16 SSDs?

    • Operating temperature for this SSD is low 20s and it is much cooler than the previous Gen 4 SSDs we have been seeing, top temp reached being 70C.

  2. how long until controllers for nvme storage get integrated right on the cpu, like they do with RAM? 🙂

  3. Is the latency comparable to Intel 905P?
    How does the Random Read compare in your opinion.

    Always enjoy your reviews.
    Still have my XP941 in one of my 1U’s making me dough.


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