WD Red SA500 2TB vs SANDISK Optimus GX PRO 850X 1TB Heatsink SSD Comparison

WD Red SA500 2TB and SANDISK Optimus GX PRO 850X 1TB Heatsink are both solid state drives with the same Form Factor (M.2-2280). The main differences are in Capacity, Interface, NVME and NAND Flash Type.

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WD Red SA500 2TB	SANDISK Optimus GX PRO 850X 1TB Heatsink
Prices (Change region) In Stock $499.99 Out of Stock $758.71 - Buy now	Prices (Change region) In Stock Free shipping $349.99 Out of Stock Free shipping $349.99 In Stock Free shipping $497.21
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Brand Western Digital	Brand SanDisk
Model WDS200T1R0B	Model SDSP81100TAH-000E0 SDSP81100TAH
Release Date 📅 October 2019	Release Date 📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (13 reviews) Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Price/GB $0.25	Price/GB $0.35
GB/$1 4	GB/$1 2.86
Series Red SA500	Series Optimus GX PRO 850X
Capacity 2000 GB	Capacity 1000 GB
Interface SATA 6 Gb/s	Interface PCIe Gen4 x4
NVME No	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280
NAND Flash Type 3D NAND	NAND Flash Type 3D NAND TLC
Cache -	Cache No DRAM (SLC)
Max Sequential Read Up to 560 MB/s	Max Sequential Read Up to 7300 MB/s
Max Sequential Write Up to 530 MB/s	Max Sequential Write Up to 6300 MB/s
MTBF Up to 2M hours	MTBF 1,750,000 hours