Patriot P400 512GB -- Budget PCIe 4.0 DRAM-Less NVMe Review
The Patriot P400 512 GB is a budget PCIe 4.0 SSD built on the InnoGrit IG5220 DRAM-less controller, delivering mid-range Gen4 performance at aggressive pricing.
The P400 uses the InnoGrit IG5220 controller — a DRAM-less PCIe 4.0 x4 design. At 512 GB it is rated at 5,000 MB/s reads and 3,300 MB/s writes. The DRAM-less architecture keeps costs down while maintaining adequate Gen4 performance for gaming and general productivity. The single-sided PCB fits thin laptops.
The P400 is Patriot's value-tier Gen4 drive, positioned below the Viper VPR400. The IG5220 controller delivers solid mid-range speeds without the cost of DRAM cache. For budget builders, the P400 offers a good balance of capacity, performance, and price.
✅ Storage Comparisons:
🚀 Performance and benchmarks
The 512 GB P400 delivers 5,000/3,300 MB/s sequential reads and writes. The DRAM-less design handles light-to-moderate sustained writes adequately. Gaming load times are competitive with any PCIe 4.0 drive.
Patriot P400 512 GB vs M.2 4.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
- Patriot P400 512 GB (this drive): 5,000 MB/s read, 3,300 MB/s write
🖥️ Endurance and warranty
Patriot covers the P400 512 GB with a five-year warranty. The 1 TB model carries 800 TBW endurance.
📊 Specs
| Category | Value |
|---|---|
| Capacity [?] | 512 GB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Innogrit Rainier IG5220 |
| Memory type [?] | Micron 3D TLC |
| DRAM [?] | HMB |
| Read speed (MB/s) [?] | 5000 |
| Write speed (MB/s) [?] | 3300 |
| Read IOPS [?] | 620000 |
| Write IOPS [?] | 550000 |
| Endurance (TBW) [?] | 800 |
| MTBF (million hours) [?] | 1500000 |
| Warranty (years) [?] | 3 |
Conclusion
The 512 GB P400 is Patriot's entry-level Gen4 drive. Its 5,000/3,300 MB/s speeds are competitive with the Kingston NV2 512 GB and WD Blue SN580 512 GB. For budget builds, the P400 is a solid choice. Compare pricing against the three budget alternatives.
+ Pros
- 5,000/3,300 MB/s -- solid budget Gen4
- DRAM-less IG5220 -- efficient
- 5-year warranty
- Single-sided PCB -- fits thin laptops
- Cons
- No DRAM -- slower sustained random I/O
- 512 GB tight for modern use
- Below flagship Gen4 speeds
🛒 Buy this or similar SSD Storage:
✨ Video Review
Patriot P400 512GB Internal SSD - NVMe PCIe M.2 Gen4 x 4 - Low-Power Consumption Solid State Review
