Silicon Power UD85 4TB vs SANDISK Optimus GX PRO 8100 8TB SSD Comparison

Silicon Power UD85 4TB and SANDISK Optimus GX PRO 8100 8TB are both solid state drives with the same Form Factor (M.2-2280). The main differences are in Capacity and Interface.

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Silicon Power UD85 4TB	SANDISK Optimus GX PRO 8100 8TB
Prices (Change region) Price not available	Prices (Change region) Out of Stock $369.99 In Stock $2,799.99 In Stock Free shipping $2,799.99 In Stock Free shipping $2,799.99 Show 1 more offers
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Brand Silicon Power	Brand SanDisk
Model SP04KGBP44UD8505	Model SDSP82800TAN-000E0 SDSP82800TAN
Release Date -	Release Date 📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Price/GB -	Price/GB $0.05
GB/$1 -	GB/$1 21.62
Capacity 4000 GB	Capacity 8000 GB
Interface PCIe Gen4 x4	Interface PCIe Gen5 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280