SANDISK Optimus GX 7100 500GB vs Optimus GX PRO 850X 8TB SSD Comparison

SANDISK Optimus GX 7100 500GB and SANDISK Optimus GX PRO 850X 8TB are both solid state drives with the same Interface (PCIe Gen4 x4), Form Factor (M.2-2280) and NAND Flash Type (3D NAND TLC). The main differences are in Capacity, Max Sequential Read and Max Sequential Write.

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SANDISK Optimus GX 7100 500GB	SANDISK Optimus GX PRO 850X 8TB
Prices (Change region) In Stock $119.99 In Stock Free shipping $119.99 In Stock $119.99 In Stock $119.99 Last updated 23 minutes ago. Out of Stock $119.99 Out of Stock Free shipping $119.99 Out of Stock Free shipping $154.33 Show 4 more offers	Prices (Change region) Out of Stock $289.99 In Stock $1,999.99 In Stock Free shipping $1,999.99 Out of Stock Free shipping $1,999.99 In Stock Free shipping $2,365.26 Show 2 more offers
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Brand SanDisk	Brand SanDisk
Model SDSP71500GAN-000E0 SDSP71500GAN	Model SDSP81800TAN-000E0 SDSP81800TAN
Release Date 📅 February 2026	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 $0.24	Price/GB $0.04
GB/$1 4.17	GB/$1 27.59
Series Optimus GX 7100	Series Optimus GX PRO 850X
Capacity 500 GB	Capacity 8000 GB
Interface PCIe Gen4 x4	Interface PCIe Gen4 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280
NAND Flash Type 3D NAND TLC	NAND Flash Type 3D NAND TLC
Cache -	Cache No DRAM (SLC)
Max Sequential Read Up to 6800 MB/s	Max Sequential Read Up to 7200 MB/s
Max Sequential Write Up to 5800 MB/s	Max Sequential Write Up to 6600 MB/s
MTBF 1,750,000 hours	MTBF 1,750,000 hours