While we have had the chance to check out a few different Patriot SSDs that have performed well over the years. Their recently introduced P400 is Patriot's first PCIe 4.0 SSD which opens up new performance possibilities. When PCIe 4.0 was introduced only a few companies had compatible drives at that time and it makes sense. At that time only one chipset from AMD supported the new platform, but now Intel and AMD have had options available on both sides for over a year and even longer on the AMD side of things. The odds of people having PCs that support them are much higher now. So today I’m going to dig into the P400 and see what it has going behind the curtain then we can run it through our test suite to see how it performs compared to a few older PCIe 3.0 drives and a whole stack of 4.0 drives on the new Intel Z690 chipset.

Product Name: Patriot P400 1TB

Review Sample Provided by: Patriot

Written by: Wes Compton

Amazon Affiliate Link: HERE






Model Number



Connection Interface

PCIe Gen4 x 4

Form-Factor, Interface

M.2-2280, PCIe 4.0 x4, NVMe 1.3

Operating Temperature

0 ~ 70°C

Power Consumption

Full: 2.38W Idle:0.38W


400 TB

800 TB


2,000,000 hours

4K Aligned Random Read

up to 620K IOPs

4K Aligned Random Write

up to 550K IOPs

Sequential Read

up to 5,000MB/s

Sequential Write

up to 3,300MB/s

up to 4,800MB/s


• SmartECC technology

• Exclusive slim graphene heatshield

O/S Supported

Windows® 7*/8.0*/8.1/10


Limited 3 years


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