### Electronic Specifications for M8VS1-166-R The **M8VS1-166-R** is a specific model within the **M8V series** of Solid State Drives (SSDs) manufactured by **Plextor**. This particular part number refers to the 128GB or 256GB variants (depending on regional SKU) in the **M.2 2280** form factor utilizing the **SATA III** interface. --- ### 1. Key Technical Specifications Below are the primary electronic and performance characteristics of the device: | Feature | Specification | | :--- | :--- | | **Form Factor** | M.2 2280 (80mm x 22mm) | | **Interface** | SATA III 6.0 Gb/s (Backward compatible with SATA II) | | **NAND Flash Type** | Toshiba/Kioxia 64-layer 3D TLC (BiCS3) | | **Controller** | Silicon Motion SM2258 | | **DRAM Cache** | 512MB DDR3 (varies by capacity) | | **Sequential Read** | Up to 560 MB/s | | **Sequential Write** | Up to 400 - 520 MB/s | --- ### 2. Internal Component Breakdown #### A. The Controller (Silicon Motion SM2258) The "brain" of the M8VS1 is the **SM2258**. It is a high-performance SATA 6Gb/s SSD controller. * **LDPC ECC Technology:** Uses Low-Density Parity-Check code to correct data errors, significantly extending the endurance of the 3D TLC NAND. * **Direct-to-TLC & SLC Caching:** It manages a portion of the drive as a fast SLC cache to handle burst write operations efficiently. #### B. NAND Flash (3D TLC) Unlike older 2D (Planar) NAND, the **64-layer 3D TLC** used in this part stacks cells vertically. * **Electronic Benefit:** This reduces cell-to-cell interference, resulting in higher reliability and lower power consumption compared to older generations. #### C. Power Management and Voltage The device operates on the standard M.2 supply voltage: * **Supply Voltage:** 3.3V ± 5% * **Power Consumption (Active):** Typical 2.0W to 2.5W during heavy R/W operations. * **Power Consumption (Idle):** < 0.3W, supporting low-power states to preserve battery life in laptops. --- ### 3. Reliability and Endurance Features The electronic design includes several safeguards to ensure data integrity: 1. **PlexNitro:** A proprietary cache acceleration technology that uses an SLC buffer so that the user has full access to the drive's capacity without needing to set aside "over-provisioning" space. 2. **TrueSpeed:** A firmware-level technology that prevents the SSD from slowing down (dropping to "dirty" speeds) after long-term usage or when the drive is nearly full. 3. **MTBF:** Rated at 1.5 million hours, indicating high electronic component stability.