WD40E31X 9

WD Blue (WD40E31X) 4TB PC SSHD

SKU: WD40E31X

WD Blue Solid State Hybrid Drives (SSHD) combine a generous amount of NAND flash SSD technology and massive HDD storage capacity into a single drive. WD engineers team up the best of SSD and HDD to produce a hybrid that can increase overall system performance – resulting in quicker system boots, faster application loads, and improved responsiveness when compared to traditional hard drives.

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  • Specifications 4 TB
    Hard Drive Type WD Blue SSHD
    Model Number WD40E31X
    Interface SATA 6 GB/s
    Formatted Capacity 4 TB
    Form Factor 3.5-inch
    Advanced Format (AF) Yes
    ROHS Compliant Yes
    Performance
    Data transfer rate (max)
    Buffer to host 6 GB/s
    Host to/from drive (sustained) 150 MB/s
    NAND Type MLC
    NAND Size (GB) 8
    Cache (MB) 64
    Reliability/Data Integrity
    Load/unload cycles 300,000
    Non-recoverable read errors per bits read <1 in 10¹⁴
    Limited warranty (years) 3
    Power Management
    Spinup (Max) 12VDC ±10% (A, peak) 2.8
    Spinup (Max) 5VDC ±10% (A, peak) 1
    Spinup (Max) (W) 38.6
    Average power requirements (W)
    Read/Write 6
    Idle 4.75
    Standby and Sleep 0.57
    Environmental Specifications
    Operating
    Non-operating 0 to 60
    Shock (Gs) -40 to 70
    Operating (2 ms, read/write) 30
    Non-operating (2 ms) 350
    Acoustics (dBA)
    Idle 25
    Seek (average) 26
    Physical Dimensions
    Height (in./mm, max) 1.028/25.4
    Length (in./mm, max) 5.787/147
    Width (in./mm, ± .01 in.) 4/101.6
    Weight (lb./kg, ± 10%) 0.99/0.45
  • WD40E31X CDI
  • WD40E31X HDD Properties
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From Hardware BBQ:

As per WD, this drive uses a set of algorithms which tracks data usage and prioritizes part of the data which is frequently used using the 8GB NAND. One of such uses (as WD highlighted) is for gaming. With this algorithm and the 8GB NAND, it would provide lesser loading times compared to traditional hard drives. With a much larger capacity and value still towards mechanical drives (for now), gamers can keep a large amount of games stored away in the drive.

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