Quick Overview
SanDisk positions the WD_Black SN7100 4TB NVMe Gen 4 M.2 SSD as a flagship-tier internal ssds, asking $589.99. After 4,809 customer reviews on Amazon, the verdict is a exceptional 4.7 stars. We've ranked it #14 out of 45 in this category. It's not a top pick - there are higher-rated and better-value options in the category - but specific shoppers may still find it fits their needs.
Physical Design
For internal ssds, what you can't see matters more than what you can - the controller, NAND type, and DRAM cache determine real-world speed. The enclosure is just the wrapper. Sustained read/write performance is well-reviewed here.
The Numbers
- Brand: SanDisk
- Price: $589.99 (well above the $236.75 category average)
- Amazon rating: 4.7 of 5.0
- Reviews: 4,809
- Category rank: #14 of 45 in internal ssds
- Cheaper in category: 43 products
- Higher-rated in category: 13 products
- More-reviewed in category: 13 products
From the Reviews
4,809 reviews and a 4.7-star average is a strong signal. At this scale, manufactured reviews would have to be unrealistically pervasive to move the score this much, which means the satisfaction is real for the typical buyer.
The Field Around It
At $589.99, the WD_Black SN7100 4TB NVMe Gen 4 M.2 SSD sits well above the $236.75 category average. 43 options are cheaper and 1 are more expensive.
The category leader is the Samsung 970 EVO Plus 2TB NVMe M.2 SSD ($297.99, 4.8★, 60,441 reviews). It's $292.00 more expensive than the top pick despite ranking lower, which is a hard combination to justify unless a specific feature swings the decision.
Higher-rated options in this category:
- WD_BLACK SN850 1TB NVMe Gen 4 M.2 SSD - $319.50, 4.9★ (8,639 reviews) · Better on both axes
- Samsung 970 EVO Plus 2TB NVMe M.2 SSD - $297.99, 4.8★ (60,441 reviews) · Better on both axes
- Samsung 990 PRO 2TB NVMe M.2 PCIe Gen 4 - $479.99, 4.8★ (14,159 reviews) · Better on both axes If pure price is the filter, the cheapest is the KOOTION 256GB NVMe M.2 PCIe Gen 3 SSD at $55.27.
Should You Buy It?
Only if you specifically want what makes it expensive. The rating is excellent but the price premium is meaningful. There are cheaper highly-rated options in this category - make sure the extra money is buying a feature you'll actually use.
Best fit for:
- Quality-first buyers who prioritize a track record of satisfaction over saving a few dollars
Bottom Line
7.6/10
Functional, mid-pack option. Nothing wrong with it, but nothing pushing it above the better-ranked alternatives either.