WD_Black SN7100 4TB NVMe SSD Dropped to $546 on Amazon — 60% Off

The WD_Black SN7100 4TB is currently down to $546 on Amazon – $834 off its list price of $1,380, or about 60% off. Before you get too excited about that number, here’s some context.

About That “60% Off”

Let’s be honest: the $1,380 list price is inflated. Nobody pays for it. The SN7100 launches in early 2025 and the 4TB model is in the $550-600 range at retail. So this isn’t an $834 savings in any real sense, it’s closer to the going rate for this trip, perhaps a little below the current price.

That said, $546 for 4TB of solid Gen4 NVMe storage is still a decent price. That’s about $137 per terabyte, which is competitive for a WD_Black drive with this kind of performance.

What You Get

The SN7100 is WD’s latest Black series Gen4 drive that uses next-generation TLC 3D NAND. Main specifications:

• 4TB capacity, M.2 2280 form factor
• 7,000 MB/s sequential read / 6,700 MB/s sequential write
• PCIe Gen4 x4 interface
• TLC NAND (not QLC — better endurance for continuous writes)

These read/write speeds essentially max out the Gen4 interface. You won’t overlook performance when compared to the more expensive Gen5 drives in most real-world scenarios — game load times between the Gen4 and Gen5 are nearly identical. TLC NAND is an important detail here. Cheaper 4TB drives often use QLC, which reduces write speeds once the SLC cache fills. TLC holds up better for continuous transfers like moving large game libraries or video editing.

Catch

WD has confirmed endurance specs for the SN7100 range, and the numbers are solid, ranging from 300 TBW for the 500GB model to 2400 TBW for the 4TB capacity. For game drives, that’s more than you’ll need. And if you’re planning heavier write workloads in addition to gaming, the 4TB model’s 2400 TBW rating can also handle production-level usage comfortably.

Another thing: this is a Gen4 drive. If your motherboard has a PCIe 5.0 M.2 slot and you buy a new one, a Gen5 drive like the Crucial T705 4TB will give you higher sequential throughput, but you’ll pay much more for barely noticeable gains when loading games. Gen4 is the sweet spot for price-performance ratio at the moment.

How Do They Compare

At the 4TB level, your main alternatives are the Samsung 990 EVO Plus 4TB and Crucial P3 Plus 4TB. Samsung typically costs $20-40 more but offers proven durability ratings and Samsung Magician software. The Crucial P3 Plus is cheaper but uses QLC NAND, great for game libraries, less ideal for anything write-heavy.

The $546 SN7100 is positioned as a solid middle ground: TLC durability, near-max Gen4 speed, and WD_Black branding with dash software to match.

Who It’s For

If you’re running out of SSD space and want one drive to hold your entire Steam library without worrying about write degradation, this is a great choice. It’s also a decent choice for ROG Ally or Steam Deck groups looking to swap maximum storage over the M.2 2280.

Not the cheapest 4TB NVMe you can find, but a sub-$550 TLC is fine. Check the current price on Amazon — just ignore those inflated sale prices.

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