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Plextor S3G 128G M.2 SSD

  • Up to 550 MB/s Sequential Read
  • Up to 510 MB/s Sequential Write
  • Up to 90K IOPS Random Read
  • Up to 71K IOPS Random Write

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QuickFind: 820058

Mfr part code: PX-128S3G

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    Plextor S3G 128G M.2 SSD Product Description

    The top choice for next-generation SSD upgrade!


    New processes for advanced components

    Only the latest components were selected for the S3 series namely, Hynix's advanced 14nm process triple level cell NAND flash memory, and SMI 2254 controller. These components combined allows the S3 Series to deliver sequential read/write speeds of 550/510 MB/s with random read/write speeds of 90K/71K IOPS. Compared to the sluggish and traditional hard drives, this is a remarkable level of performance. Despite being entry-level devices, their professional quality standard is nonetheless worth noting.


    Real capacity of high speed cache

    Use the SSDs full storage capacity! The proprietary industry-leading PlexNitro technology uses SLC cache design, which means the S3 does not need to reserve over-provisioning space, thus leading to accelerated read/write speeds. This means the users can use the full capacity of the drive. Take 128GB SSD as an example: after deducting the over-provisioning space used by other brands, only about 120GB of space will be left. With the PlexNitro performance optimization technology,however, the full 128GB of space can be used, with no reduction at all.


    Ideal for custom PC building and upgrades

    The S3 series comes in two form factors - SATA 2.5-inch (S3C) and M.2 2280 (S3G) and offers 3 capacity options: 128GB and 256GB. It can fully satisfy the installation requirements of desktop and laptop devices, as well as other devices that use SSDs. This makes the S3 series the most flexible choice.




    Performance Optimization

    Exclusive PlexNitro firmware optimizes performance in SLC mode without taking up SSD space

    Data Accuracy

    Latest LDPC technology guarantees data accuracy & SSD reliability

    Ultra Compact

    Small form factor SSD particularly fits ultra-portable mobile applications

    Advanced Endurance

    Mean Time Between Failures (MTBF) of 1.5 Million Hours

    High Speed

    Take hardware performance to the practical maximum speed of the interface

    Shock & Vibration Proof

    Capable of withstanding shock and vibration movements

    Heat Resistant

    Capable of withstanding high operating temperatures

    Silent Operation

    Running silently with no moving parts to eliminate distracting noise

    Energy Efficient

    SSDs use less power than hard drives, promoting a longer battery life

    Speed Boost

    With PlexTurbo, data processing speed increases far more than tenfold

    Life Extension

    With PlexTurbo, SSD lifespan can extend by eliminate unnecessary writes

    Larger Storage Space

    With PlexCompressor, compress files automatically in the background to help SSDs release more available capacity

    Privacy Control

    With PlexVault, create private spaces without a trace that can store sensitive or confidential files



    • Sequential Read Speed* Up to 550
    • Sequential Write Speed* Up to 500
    • Random Read Speed* Up to 72,000
    • Random Write Speed* Up to 57,000
    • Capacity 128 GB
    • Cache 256 MB DDR3
    • Controller SMI SM2254
    • NAND Flash Hynix 14nm TLC
    • Power Requirement (Max.) DC 3.3V 2.0A (Max.)
    • Temperature 0°C ~ 70°C / 32°F ~ 158°F (Operating)
    • Shock 1500G (Max.), at 1 msec half-sine
    • Vibration 7 ~ 800Hz, 3.08Grms (Operating)
    • MTBF 1,500,000 hours
    • Endurance (TBW) 50
    • Warranty 3-Year
    • Dimension (L x W x H) 80 x 22 x 2.3 mm / 3.15 x 0.87 x 0.09 inch
    • Weight (Max.) 10g / 0.35oz

    Technical Specifications


    Device Type Solid state drive - internal
    Capacity 128 GB
    NAND Flash Memory Type 14nm triple-level cell (TLC)
    Form Factor M.2 2280
    Interface SATA 6Gb/s
    Buffer Size 256 MB
    Features Native Command Queuing (NCQ), TRIM support, PlexTurbo, upgradable firmware, PlexCompressor, PlexVault, LDPC error correction, 256MB DDR3 DRAM cache, PlexNitro, Silicon Motion SM2254 controller, S.M.A.R.T.
    Width 22 mm
    Depth 80 mm
    Height 2.3 mm
    Weight 10 g


    SSD Endurance 50 TB
    Drive Transfer Rate 600 MBps (external)
    Internal Data Rate 550 MBps (read) / 500 MBps (write)
    Maximum 4KB Random Write 57000 IOPS
    Maximum 4KB Random Read 72000 IOPS


    MTBF 1,500,000 hours

    Expansion & Connectivity

    Interfaces 1 x SATA 6 Gb/s - M.2 Card
    Compatible Bay M.2 2280

    Software & System Requirements

    OS Required Apple MacOS, Linux, Microsoft Windows


    Compliant Standards UL, TUV, VCCI, BSMI, WHQL, FCC, RoHS, KCC, EAC, RCM

    Manufacturer Warranty

    Service & Support Limited warranty - 3 years

    Environmental Parameters

    Min Operating Temperature 0 °C
    Max Operating Temperature 70 °C
    Shock Tolerance (operating) 1500 g @ 1 ms half-sine pulse
    Vibration Tolerance (operating) 3.08 g @ 7-800 Hz

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