The part number **W2TG0-3BC-R** identifies a specific **Solid State Drive (SSD)** manufactured by **SK Hynix**. This component is primarily used as high-speed storage in laptops, desktops, and enterprise workstations. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The W2TG0-3BC-R is part of the SK Hynix PC711 or similar client SSD series, known for balancing power efficiency with high-speed NVMe performance. | Feature | Specification | | :--- | :--- | | **Manufacturer** | SK Hynix | | **Storage Capacity** | Typically 512GB (Varies by sub-series) | | **Form Factor** | M.2 2280 (22mm x 80mm) | | **Interface** | PCIe Gen4 x4 | | **Protocol** | NVMe 1.4 | | **Flash Type** | 128-Layer (or higher) 3D TLC NAND | --- ### 2. Electronic Components & Architecture The drive consists of three primary electronic clusters: #### A. The Controller The "brain" of the SSD. It manages data traffic between the host computer and the NAND flash memory. * **Function:** Handles Error Correction Code (ECC), wear leveling, and thermal management. * **Impact:** Determines the maximum Read/Write speeds and IOPS (Input/Output Operations Per Second). #### B. 3D TLC NAND Flash This is where the data is physically stored. * **Technology:** Triple-Level Cell (TLC) stores 3 bits per cell. * **Structure:** "3D" refers to stacking memory cells vertically to increase density without increasing the physical footprint of the chip. #### C. DRAM Cache Most SK Hynix drives in this class include a dedicated LPDDR4 DRAM chip. * **Purpose:** Stores the "mapping table" (the index of where data is located on the NAND). This significantly speeds up data retrieval compared to "DRAM-less" drives. --- ### 3. Performance & Power Electronic signaling via the **PCIe Gen4** interface allows for significantly higher bandwidth than older SATA or Gen3 drives. * **Read Speeds:** Up to ~6,400 MB/s (Sequential). * **Write Speeds:** Up to ~5,000 MB/s (Sequential). * **Voltage:** Operates on a standard 3.3V rail. * **Power States:** Includes advanced power management (PS0 through PS4) to minimize battery drain in laptops during idle periods. --- ### 4. Physical Layout (M.2 2280) The component adheres to the M.2 standard, meaning: 1. **M-Key Connector:** The physical gold fingers are notched to fit into PCIe-compatible M.2 slots. 2. **Single-Sided Design:** Usually, all electronic components (Controller, DRAM, NAND) are soldered on the top side of the PCB to ensure it fits in ultra-thin laptops. ---