SK Hynix SC311 256GB 2.5" SATA SSD 0H4G39 | HFS256G32TNF-N2A0A For Sale

SK Hynix SC311 "Client" 256GB SATA 6Gb/s OEM Solid State Drive

Dell Part Number: 0H4G39, H4G39 | Model: HFS256G32TNF-N2A0A | 256GB Capacity

The SK Hynix SC311 is a high-performance "Client" SSD commonly found as the factory-installed boot drive in professional-grade laptops and workstations, such as the Dell Latitude and Precision series. It utilizes SK Hynix's proprietary 3D V3 NAND technology, offering a significant upgrade over older 2D planar drives in terms of both speed and power efficiency.

• Capacity: 💾 256 GB

• Interface: ⚡ SATA 6Gb/s (SATA III)

• Form Factor: 📏 2.5-inch (7mm slim profile)

• NAND Type: 🧠 3D V3 TLC (Triple-Level Cell)

• Sequential Read: 🏎️ Up to 540 MB/s

• Sequential Write: ✍️ Up to 480 MB/s

• Random Read/Write: 📉 70,000 / 90,000 IOPS

• MTBF: 🕒 1.5 Million Hours

• Power Draw (Active): 🔋 ~2.0W (Typical)

• OEM Reliability: As a "Dual Label" drive (carrying both SK Hynix and Dell branding), this unit is built to strict enterprise-lite standards. It is designed to handle the daily power cycles and sleep/wake transitions typical of mobile business users without data corruption.

• 3D V3 NAND: The SC311 uses 48-layer 3D NAND, which provides better cell endurance and faster write speeds compared to traditional flat NAND. This allows the drive to maintain performance even as it reaches its storage capacity.

• Power Efficiency: One of the standout features of the SC311 is its low idle power consumption (approx. 100mW). For laptop users, this translates to slightly longer battery life compared to budget or older mechanical drives.

• Smart Thermal Management: The drive includes internal sensors that monitor temperature (visible via S.M.A.R.T. ID 194), allowing the controller to manage performance to prevent overheating in tight laptop chassis.

• Target Systems:

  • Dell Systems: A direct replacement for Dell Latitude, OptiPlex, and Precision models.

  • General Laptops/Desktops: Fits any standard 2.5-inch SATA bay. Its 7mm height makes it compatible with even ultra-slim notebooks.

• Ideal Workloads:

  • Office Productivity: Smooth multitasking in Microsoft 365, Zoom, and web browsers.

  • Light Creative Work: Fast enough for basic photo editing and school Installation Note

    💡 Scannability Tip: While this specific part number (0H4G39) is the 2.5-inch SATA version, the SC311 family also exists in an M.2 SATA form factor. If you are buying this for a specific repair, ensure your system uses the 2.5" "brick" style drive and not the slim "stick" style M.2 drive.

    The SK Hynix SC311 is a "gold standard" OEM drive—it isn't flashy, but it is incredibly dependable and fast enough to fully saturate the SATA III interface.