SanDisk
Prices
SanDisk WD_BLACK SN850X
27 offers at 4 retailers · from $187 (1TB at Newegg)
Score 9.7 · Exceptional for PCIe Gen4-class
7,300 read · 6,600 write MB/s
M.2 2280
NVMe PCIe Gen4 (64 Gbps)
DRAM cache
5-year warranty
Gen 4 average best price $0.184/GB
→ Holding (0.0% since last reported)
Snapshot Nov 2, 2026
1TB
600 TBW · Single-sided
Best:
$187 at Newegg
· $0.187/GB
In line with the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
Checked
Current $
Bare drive
4 offers · lowest $187
Heatsink
4 offers · lowest $267
SanDisk Direct
Discontinued
Oct 29, 2026
2TB
1,200 TBW · Single-sided
Best:
$322 at Newegg
· $0.161/GB
13% below the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
Checked
Current $
Bare drive
3 offers · lowest $322
Heatsink
3 offers · lowest $420
SanDisk Direct
WD_BLACK™ SN850X SSD is now SANDISK Optimus GX PRO 850X SSD.
Discontinued
Oct 29, 2026
4TB
2,400 TBW · Double-sided
Best:
$673 at Newegg
· $0.168/GB
9% below the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
Checked
Current $
Bare drive
4 offers · lowest $673
Heatsink
4 offers · lowest $765
SanDisk Direct
Discontinued
Oct 29, 2026
8TB
4,800 TBW · Double-sided
Best:
$1,699 at Best Buy and Newegg
· $0.212/GB
15% above the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
Checked
Current $
Bare drive
2 offers · lowest $1,699
Newegg
Out of Stock
Nov 2, 2026
Walmart
Out of Stock
Nov 2, 2026
Heatsink
3 offers · lowest $1,699
SanDisk Direct
Discontinued
Oct 29, 2026
- Sold on the retailer's site by a third-party seller.