PX400 NVMe PCIe Gen 3 x2 SSD

By delivering up to 3x better sequential and random performance than SATA III Solid State Drives and much improved latency than AHCI drives, GOODRAM PX400 brings a breath of fresh air within the consumer storage segment. It is suitable to operate as single storage as well as complement hard drives in both desktop and mobile devices. A variety of available capacities, helps fitting into both roles.

Key features
  • Available capacities:
    256 GB 512 GB
  • M.2 2280 form factor
  • PCIe GEN 3 x2 NVMe interface
  • 3D NAND flash technology
  • 3-year warranty + technical support

Cool as M.2

Being tightly snug between the motherboard and laptop housing is not a cool place to be. That’s why we designed an ultra-slim heat dissipating thermal pad to improve the reliability of SSD. Our thermal pad is built from a thin layer of copper with graphite coating. It’s so thin you can use this SSD even in ultrabooks, yet solid enough to reduce its operating temperature and improve the sustained performance

Premium quality for everyone

GOODRAM PX400 is built on the new generation of 3D NAND flash and Phison E8 controller. It provides high built quality paired with a number of security and reliability features built in controller. PX400 backed by 3-year manufacturer warranty and free technical support


256, 512 GB


M.2 PCIe NVMe gen 3 x2 (B+M)

Form factor

M.2 size 2280

Memory chips

3D NAND flash


Phison PS5008-E8


up to 200 000 for read operations
up to 160 000 for write operations


1 500 000 hours

Operating temperature

0 - 70°C

Storage temperature

-45 - 85°C


80 x 22 x 3,5 mm


1Based on tests performed in Crystal Disk Mark 3.0.3 on SSD in FOB (fresh-out-of-box) state. Actual results may vary depending on your system configuration or SSD wear.
2Based on tests performed in Iometer on SSD in FOB (fresh-out-of-box) state. Actual results may vary depending on your system configuration or SSD wear.
256 GB 512 GB
Sequential read performance (max.)11550 MB/s1590 MB/s
Sequential write performance (max.)1850 MB/s1000 MB/s
Random read performance (4k QD64) (max.)2170 000 IOPS200 000 IOPS
Random write performance (4K QD64) (max.)2150 000 IOPS160 000 IOPS

Logistics data

SSD PX400 256 GB256 GBBlister packaging; includes: SSDSSDPR-PX400-2565908267922958
SSD PX400 512 GB512 GBBlister packaging; includes: SSDSSDPR-PX400-5125908267922965


The capacity for GOODRAM SSD is given in accordance with the IDEMA standard (LBA1-03). After formatting the drive, the capacity shown by the operating system may be lower than the advertised capacity.
Capacity in the specificationThe capacity visible in the operating system
256 GB238,47 GB
512 GB476,94 GB

GOODRAM reserves the right to change the specification at any time without prior information.

Form factor Size File
Software ZIP 42 MB
Product brochure PDF 0.2 MB
Manual PDF 1 MB
Photos ZIP 34 MB