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The WD Black SN7100 is a successor to the SN770 , featuring Sandisk’s proprietary Polaris 3 controller and 218-layer TLC (BiCS8) flash. The lack of DRAM can degrade sustained performance during heavy, prolonged transfers. However, it supports HMB (Host Memory Buffer), which compensates for this by using a portion of system memory as cache.
The SN7100 is a single-sided SSD with the standard 2280 form factor. With 2TB of capacity, the SN7100 uses Sandisk's proprietary Polaris 3 controller and SanDisk's 218-Layer TLC (BiCS8), with speeds of up to 7250 MB/s read and 6900 MB/s write.
We tested the SN7100 and found it capable of delivering sequential read speeds of up to 7,250 MB/s and write speeds of up to 6,900 MB/s, along with an above-average endurance rating of 1,400 TBW (terabytes written). It also offers excellent random read performance while consuming less power than most PCIe 4.0 SSDs on the market.
This efficiency makes it particularly well-suited for battery-powered devices such as laptops and handheld gaming consoles. Lower power consumption also translates into lower operating temperatures, allowing the drive to run comfortably without an additional heatsink in most everyday workloads. The SN7100 is also compatible with the Sony PS5, delivering performance comparable to other high-end PCIe 4.0 SSDs while maintaining lower power consumption and temperatures.
(Image credit: Tom's Hardware) (Image credit: Tom's Hardware) (Image credit: Tom's Hardware) (Image credit: Tom's Hardware) If you're on the lookout for a speedy storage upgrade, the 2TB WD Black SN7100 at $242.96 is a solid deal, if not its lowest-ever price. Considering this SSD climbed as high as $400 at one point and was selling for around $300 last month, now seems like a good time to purchase.
If you're looking for more savings, check out our Best PC Hardware deals for a range of products, or dive deeper into our specialized SSD and Storage Deals, Hard Drive Deals , Gaming Monitor Deals , Graphics Card Deals , gaming chair, or CPU Deals pages.
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Key considerations
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Reference reading
- https://www.tomshardware.com/pc-components/ssds/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/ssds/wds-2tb-black-ssd-price-drops-by-nearly-20-percent-ahead-of-prime-day-sale-grab-the-2tb-sn7100-for-usd242-96#main
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Informational only. No financial advice. Do your own research.