Archival product


CX300 is a combination of fast components and stable firmware. Thanks to the use of fast NAND flash memory and Phison S11 controller, the GOODRAM CX300 is an ideal solution for all users who want to move from legacy hard drive to a modern SSD.

CX300 Firmware upgrade is now availaible in DOWNLOAD section.

Key features
  • Available capacities:
    120 GB 240 GB 480 GB 960 GB
  • 2,5" form factor
  • SATA III (6 Gb/s) interface
  • TLC NAND flash technology
  • 3-year warranty + technical support

Easy drive replacement

GOODRAM CX300 is available in the most popular 2.5″ form factor , allowing users easily migrate from traditional hard drive. With slim 7mm housing this SSD can be installed in newest laptops and ultrabooks with compatible SATA slot.

Good and stable

It is a combination of efficient components and stable firmware. Years of experience have enabled us to create a solution that offers both good performance and reliability, so that the CX300 will last for years to come.

No slowdowns

The use of innovative controller technologies ensures that the user will not experience any sudden performance drops while performing everyday tasks. The CX300 provides stable performance, regardless of the working environment and file types.


120, 240, 480, 960 GB


SATA III (6 Gb/s). Backwards compatible with SATA II and I

Form factor


Memory chips

TLC NAND flash


Phison S11


up to 88 000 for read operations
up to 84 000 for write operations


2 000 000 hours

Operating temperature

0 - 70°C

Storage temperature

-45 - 85°C


100 x 69,85 x 7 mm


1Based on tests performed in ATTO Disk Benchmark 2.47 on SSD in FOB (fresh out of box) state. Parameters may vary depending on the computer configuration or SSD wear. 2Based on tests performed in Crystal Disk Mark 3.0.3 on SSD in FOB (fresh-out-of-box) state. Parameters may vary depending on the computer configuration or SSD wear. 3Based on the tests conducted in IOMETER in FOB (fresh out of box) state. Parameters may vary depending on the computer configuration or SSD wear.
120 GB240 GB480 GB960 GB
Compressible data read (max.)1555 MB/s555 MB/s555 MB/s555 MB/s
Compressible data write (max.)1540 MB/s540 MB/s540 MB/s540 MB/s
Incompressible data read (max.)2550 MB/s550 MB/s550 MB/s550 MB/s
Incompressible data write (max.)2450 MB/s460 MB/s470 MB/s490 MB/s
Number of random read operations for 4k files (max. IOPS385 00086 00088 00080 000
Number of random write operations for 4k files (max. IOPS)381 00080 00083 00075 000

Logistics data

CX300 120GB120 GBSSD, 2,5 mm spacerSSDPR-CX300-120590826792392
CX300 240GB240 GBSSD, 2,5 mm spacerSSDPR-CX300-240590826792408
CX300 480GB480 GBSSD, 2,5 mm spacerSSDPR-CX300-480590826792415
CX300 960GB960 GBSSD, 2,5 mm spacerSSDPR-CX300-960590826792422


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 of visible in the operating system
120 GB111,79 GB
240 GB223,57 GB
480 GB447,13 GB
960 GB894,25 GB

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

Form factor Size File
CX300 Firmware upgrade ZIP 18 MB
Software ZIP 42 MB
Product brochure PDF 0.2 MB
Manual PDF 1 MB
Photos ZIP 31 MB