Patriot P400 1Tb SSD technical specifications

Posted on December 10, 2022 by Raymond Chen

Patriot's P400 SSD works on PCIe M.2 4.0 x 4 interface. More details about this SSD here.

Patriot P400 1Tb SSD technical specifications

Patriot's 1Tb P400 SSD works on Innogrit Rainier IG5220. The drive write a data location map on Dynamic-Random Access Memory HMB to open a files without delays. The P400 comes equipped with Micron 3D TLC flash memory. Patriot P400 is offered also in 512 Gb volume sizes.

Performance and benchmarks

Patriot P400 works on PCIe M.2 4.0 x 4 with maximum write speeds 4800 Mbps, and sequential read speeds 5000 Mbps. This model has IOPS 620000 on reading and 550000 on writing operations per second.

Endurance and warranty

Manufacturer give 3 years warranty period limited by 800 TBW.


Category Value
Capacity 1 Tb
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


Patriot P400 1Tb use PCIe 4 that is significantly faster than PCIe 3.0. The maximum write speed is 4800 Mb/s, that is average value for this computer expansion bus standard. The drive provide possibility to write 800 TBW, that is pretty well against rivals. Weighing all these factors, our site strongly recommend to have Patriot P400 1Tb for your PC.

+ Pros

  • Good writing speed
  • PCIe 4.0
  • Capacity
  • Endurance

- Cons

  • None

Buy this or similar SSD:

Video Review

How fast is this DRAM-less SSD? Patriot P400 1TB NVMe SSD Review


The Patriot P400 has HMB. Which means that the storage uses the system's RAM for its proprietary needs. Dynamic Random-Access Memory in their controller help to improve endurance and IOPS.

The P400 1Tb due to the low density of memory chips able to work without further heat sinks. Some motherboards already has additional cooling above and below the drive for improving productivity during heavy loads.

The Patriot P400 has write speed 4800 Mb per second, read speed 5000 Mbps. Storage run on Innogrit Rainier IG5220 controller and M.2 4.0 x 4 interface standard. The NAND flash memory type is Micron 3D TLC.
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