WD Black SN7100 2TB NVMe Gen4

WD Blue SN7100 2TB NVMe Gen4 SSD - India Buyer's Guide

The WD Blue SN7100 is a relatively recent addition to WD's NVMe lineup, and at 2TB it makes a compelling case for itself. This is WD's mid-range Gen4 drive with DRAM cache - sitting above the DRAMless SN770 and just below the flagship SN850X.

Where the SN7100 2TB Fits

The SN7100 uses WD's controller with a dedicated DRAM cache and TLC NAND. DRAM cache at this tier means you get consistent random I/O performance that DRAMless drives cannot match - especially relevant for workloads that involve lots of small file reads and writes, like game installations or compilation tasks.

Rated sequential: up to 7,250 MB/s read, 6,300 MB/s write. These are impressive numbers that sit very close to the SN850X 2TB (7,300/6,600 MB/s). The real-world gap between the SN7100 and SN850X is narrower than the price gap suggests for most users.

Sequential Speed Comparison

India Pricing (May 2025)

The WD Blue SN7100 2TB is priced at ₹10,000–₹14,000:

• MDComputers - check for current availability; being a newer drive, stock can vary
• PrimeABGB - good availability expected as distribution ramps up
• Vedant Computers - worth checking for stock
• Amazon India / Flipkart - increasingly available; check both for price differences

WD's India distribution through Acro Engineering handles the SN7100 alongside other WD NVMe lines. Warranty is 5 years.

SN7100 2TB vs SN850X 2TB - Which Should You Buy?

At 2TB, the SN7100 sits ₹3,000–₹4,000 below the SN850X in most cases. The sequential speed difference is negligible - 7,250 vs 7,300 MB/s read. Where the SN850X pulls ahead is in sustained random I/O and consistent latency under heavy workloads.

For gaming, either drive performs identically in practice - load times are gated by game asset streaming logic, not the 50 MB/s raw sequential difference. For content creation with large sequential file transfers (video editing, backup), the SN850X has a marginal edge.

My take: if the SN7100 2TB is ₹2,000–₹3,000 cheaper than the SN850X 2TB at the time you are buying, the SN7100 is the smarter purchase for most users.

Price Per GB and Endurance

At ₹10,000–₹14,000 for 2TB, the SN7100 2TB works out to ₹5–₹7/GB. The 2TB model is rated at 900 TBW endurance - solid for 5+ years of heavy use.

India Summer and Power Notes

The SN7100 runs warm under sustained loads, as most Gen4 drives do. In Indian summer conditions with ambient temperatures above 35°C, ensure M.2 slot has some airflow or add a basic heatsink. The DRAM cache means slightly better power loss handling than pure DRAMless drives.