SanDisk
Prices
SanDisk Optimus GX PRO 850X
39 offers at 6 retailers · from $249 (1TB at Best Buy)
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:
$249 at Amazon and B&H
· $0.249/GB
35% above the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
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Current $
Bare drive
5 offers · lowest $249
Heatsink
6 offers · lowest $279
2TB
1,200 TBW · Single-sided
Best:
$419 at Amazon and B&H
· $0.210/GB
14% above the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
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Current $
Bare drive
6 offers · lowest $419
Heatsink
4 offers · lowest $509
4TB
2,400 TBW · Double-sided
Best:
$849 at Amazon and B&H
· $0.212/GB
15% above the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
Checked
Current $
Bare drive
5 offers · lowest $849
Heatsink
5 offers · lowest $979
8TB
4,800 TBW · Double-sided
Best:
$1,699 at Amazon and B&H
· $0.212/GB
15% above the average best Gen 4 price ($0.184/GB)
Retailer
Price
$/GB
Stock
Checked
Current $
Bare drive
4 offers · lowest $1,699
Newegg
Out of Stock
Nov 2, 2026
Heatsink
4 offers · lowest $1,749
- Sold on the retailer's site by a third-party seller.