Silicon Power UD85 500GB vs SANDISK Optimus GX PRO 850X 1TB Heatsink SSD Comparison

Silicon Power UD85 500GB and SANDISK Optimus GX PRO 850X 1TB Heatsink are both solid state drives with the same Interface (PCIe Gen4 x4) and Form Factor (M.2-2280). The main differences are in Capacity.

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Silicon Power UD85 500GB	SANDISK Optimus GX PRO 850X 1TB Heatsink
Prices (Change region) - Buy now	Prices (Change region) In Stock Free shipping $349.99 In Stock Free shipping $349.99
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Brand Silicon Power	Brand SanDisk
Model SP500GBP44UD8505	Model SDSP81100TAH-000E0 SDSP81100TAH
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 $0.35
GB/$1 -	GB/$1 2.86
Capacity 500 GB	Capacity 1000 GB
Interface PCIe Gen4 x4	Interface PCIe Gen4 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280