WD Black SN850X 2TB NVMe Gen4
2TB NVME GEN 4 SSD, 7300 MB/s read, DRAM-cached.
2TB premium NVMe. Games + OS + work all on one drive. Excellent sustained performance.
Official India stock. Full warranty through the brand's India service network, standard RMA if anything goes wrong.
Full specs
Motherboards with M.2 slots
WD Black SN850X 2TB NVMe Gen4 SSD India Price Review 2025
WD Black SN850X 2TB NVMe Gen4 SSD - India Buyer's Guide
The WD Black SN850X 2TB is as good as Gen4 NVMe gets before you step into Gen5 territory. This is WD's top consumer SSD - not a budget drive, not a mainstream drive. If you are spending ₹13,000–₹18,000 on an SSD, this is where the money goes.
The SN850X Architecture
The SN850X uses WD's in-house NVMe controller with a dedicated DRAM cache and TLC NAND. DRAM cache means the drive maintains its own high-speed buffer independently of your system RAM - this matters for sustained random I/O, large file transfers, and any workload that pushes beyond what an HMB-based DRAMless drive can sustain.
Rated sequential: 7,300 MB/s read, 6,600 MB/s write. These are among the highest sequential specs you will find on any Gen4 drive, and the SN850X backs them up in real-world testing rather than just on a spec sheet. Tom's Hardware and TechPowerUp benchmarks consistently place it at or near the top of Gen4 rankings.
There is also a heatsink variant with a pre-attached aluminum heatsink. In India's ambient temperatures - particularly in summer - this is worth considering for sustained workloads.
Sequential Speed Comparison
India Pricing (May 2025)
The WD Black SN850X 2TB sits at ₹13,000–₹18,000 depending on variant (heatsink or standard) and retailer:
- MDComputers - one of the more reliable sources for the SN850X, good pricing
- PrimeABGB - standard pricing, sometimes has heatsink variant in stock
- Vedant Computers - check for current stock
- Amazon India / Flipkart - prices vary; heatsink and standard variants listed separately
WD distribution in India runs through Acro Engineering. Warranty service is handled domestically.
Price per GB at 2TB: roughly ₹6.5–₹9/GB. Higher than the SN770 2TB's ₹4.5–₹6.5/GB, but DRAM cache and TLC endurance justify the gap for demanding workloads.
SN850X 2TB vs Samsung 990 Pro 2TB
This is the main head-to-head comparison that matters at this price tier. On raw sequential read, the 990 Pro edges slightly ahead. On real-world gaming load times and sustained random I/O, the SN850X 2TB often matches or beats the 990 Pro. Pricing in India is similar. Either drive is an excellent purchase; the SN850X is my preference because WD's India distribution and warranty ecosystem is straightforward.
Use Cases That Justify the Price
- Gaming PC where you want a single fast drive covering OS + full game library
- Video editing and content creation with large project files
- 3D rendering or workstation use where sustained random I/O matters
- PS5 storage expansion (SN850X is Sony's recommended WD option)
For pure office use or light gaming, the SN770 2TB saves you ₹3,000–₹5,000 with acceptable performance trade-offs.
Questions
Yes, backward compatible. You lose most of the performance advantage - Gen3 caps at about 3,500 MB/s. If you have a Gen3 board, the SN770 2TB is a better value choice.
For Indian ambient temperatures in summer (30–40°C room temperatures), the heatsink variant is worth the small premium if your case has limited M.2 airflow. It costs roughly ₹500–₹1,000 more in India.
The SN8100 is Gen5 and significantly faster, but costs ₹20,000–₹28,000 and requires a Gen5 M.2 slot. The SN850X 2TB is the sensible choice for any Gen4 platform and remains fast enough for gaming and creative work through the next hardware generation.