WD Black SN850X 1TB NVMe Gen4
1TB NVME GEN 4 SSD, 7300 MB/s read, DRAM-cached.
Top Gen4 NVMe. DirectStorage-optimized for gaming. Slightly hotter than competitors — pair with a heatsink in tight cases.
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 1TB NVMe Gen4 SSD India Price Review 2025
WD Black SN850X 1TB NVMe Gen4 SSD — India Buyer's Guide
The WD Black SN850X 1TB is the best 1TB Gen4 NVMe SSD you can buy right now, and it is available in India through Rashi Peripherals at ₹7,000–₹10,000. I have covered this drive in depth in the main WD SN850X review on this site. This page (slug: wd-sn850x-1tb-gen4) is the site's Gen4 variant listing for the same product — two slugs pointing to the same physical drive.
If you want the full detailed review, head to the main article. Here I will cover the India-specific purchasing context and the key specs.
The SN850X 1TB — What Matters
The SN850X uses WD's in-house NVMe controller with dedicated DRAM cache and TLC NAND. At 1TB, the SLC cache is substantial — large enough that most real-world workloads never exhaust it. The DRAM cache handles random I/O efficiently, giving the SN850X consistent performance across both sequential and random workloads.
Rated sequential: 7,300 MB/s read, 6,300 MB/s write. These are the highest rated sequential speeds for any 1TB Gen4 drive, and they hold up in actual testing. Tom's Hardware and TechPowerUp consistently rank the SN850X at or near the top of Gen4 1TB benchmarks.
A heatsink variant is available — a pre-attached aluminum heatsink model that costs slightly more but handles thermal load better in enclosed cases and Indian summer conditions.
Sequential Speed Comparison
India Pricing (May 2025)
The WD Black SN850X 1TB is available at ₹7,000–₹10,000:
- MDComputers — reliable source, competitive pricing
- PrimeABGB — standard pricing, check for heatsink variant
- Vedant Computers — good availability
- Amazon India / Flipkart — prices vary; heatsink and standard versions listed separately
India distribution runs through Rashi Peripherals — established in India with local warranty handling. This is worth noting: Rashi Peripherals has a solid service network across major Indian cities.
Why the SN850X 1TB Remains the Standard Recommendation
At ₹7,000–₹10,000, the SN850X 1TB is one of the most cost-effective ways to get a DRAM-cached flagship Gen4 drive in India. The combination of:
- 7,300 MB/s sequential read with DRAM cache
- TLC NAND with 600 TBW endurance rating
- 5-year warranty
- Rashi Peripherals India distribution
- Heatsink variant availability
Makes this the default recommendation for any Gen4 gaming PC OS drive at 1TB capacity in India. The only reason to skip it at 1TB:
- Budget is tight: WD SN770 1TB saves ₹1,500–₹3,000 with adequate performance
- You need 2TB: step up to the SN850X 2TB or SN7100 2TB
- You are on a Gen5 platform: the SN8100 2TB is the forward-looking choice
Questions
The 990 Pro 1TB is rated very slightly faster in sequential read. In real-world gaming and daily use, both are identical. The SN850X tends to be priced similarly in India; choose based on current pricing and availability. Both are excellent.
Yes — Sony officially recommends the SN850X for PS5 M.2 expansion. The 1TB capacity is practical for PS5 expansion (better than 500GB), though 2TB is the preferred size for a full game library.
Yes — Rashi Peripherals is one of India's established IT distributors. Warranty claims can be processed through their service network or via the retailer you purchased from. Keep your bill.