Patriot P400 512Gb NVMe technical review

Posted on November 23, 2022 by Raymond Chen

Patriot's P400 works on PCIe M.2 4.0 x 4 computer expansion bus standard. Read below about this NVMe SSD here.

Patriot P400 512Gb NVMe technical review

Patriot's 512Gb P400 NVMe SSD use Innogrit Rainier IG5220 controller. The drive storing a data location map on Dynamic-Random Access Memory HMB to open a files without delays. The P400 comes equipped with Micron 3D TLC memory. Internal SSD also available in 1 Tb capacity.

Performance and benchmarks

This NVMe use PCIe M.2 4.0 x 4 with sequential read speeds 5000 Mbps, and sequential write speeds 4800 Mbps. This model has input/output performance 620000 on reading and 550000 on writing operations per second.

Endurance and warranty

Patriot give 3 years warranty for this product that limited by 800 TBW.


Category Value
Capacity 512 Gb
Interface M.2 4.0 x 4
Controller Innogrit Rainier IG5220
Memory type Micron 3D TLC
Read speed (Mb/s) 5000
Write speed (Mb/s) 4800
Read IOPS 620000
Write IOPS 550000
Endurance (TBW) 800
MTBF (million hours) n/a
Warranty (years) 3


P400 (512Gb) produced by Patriot use PCIe 4 that is undoubtedly faster than previous bus standard. The sequential write speed is 4800 Mbps, that is okay for this computer expansion bus standard. The Internal SSD has endurance 800 TBW, that is pretty good against competitors. When everything is weighed in the balance, our site recommend to buy Patriot P400 512Gb for your PC.

+ Pros

  • Good writing speed
  • PCIe 4.0
  • Endurance

- Cons

  • Capacity

Buy this or similar SSD:

Video Review

Patriot P400 512GB Internal SSD - NVMe PCIe M.2 Gen4 x 4 - Low-Power Consumption Solid State Review


The Patriot P400 has HMB. This means that the SSD uses the system's random-access memory for its proprietary needs. Dynamic random-access memory (DRAM) in their controller help to increase endurance and IOPS.

The P400 512Gb due to the low density of memory chips may last with no additional heat sinks. Some motherboards already has thermal pads above or below the SSD to improve productivity during times of high loads.

The Patriot P400 512Gb has write speed 4800 Mbps, read speed 5000 Mb/s. It run on Innogrit Rainier IG5220 controller and M.2 4.0 x 4 interface standard. The NAND memory type is Micron 3D TLC.
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