Compare Solid State Drives

Compare XPG SX850 256GB vs SANDISK Optimus GX PRO 850X 8TB Heatsink

The main differences between XPG SX850 256GB and SANDISK Optimus GX PRO 850X 8TB Heatsink are in Capacity, Interface, NVME and Form Factor.

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XPG SX850 256GB

SANDISK Optimus GX PRO 850X 8TB Heatsink

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-

Prices
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* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.

Brand

XPG

Brand

SanDisk

Model

SSD-SX850-256G

Model

SDSP81800TAH-000E0
SDSP81800TAH

Release Date

-

Release Date

📅 February 2026

* First availability for purchase, it may not correspond to the actual market launch date.

User reviews

★★★★☆

(25 reviews)

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Price history

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Price history

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Price/GB

-

Price/GB

$0.34

GB/$1

-

GB/$1

2.96

Series

SX850

Series

-

Capacity

256 GB

Capacity

8000 GB

Interface

SATA 6 Gb/s

Interface

PCIe Gen4 x4

NVME

No

NVME

Yes

Form Factor

2.5"

Form Factor

M.2-2280

SSD Controller

Silicon Motion

SSD Controller

-

Max Sequential Read

ATTO: Up to 560 MB/s
Crystal Disk Mark: Up to 550 MB/s

Max Sequential Read

-

Max Sequential Write

ATTO: Up to 520 MB/s
Crystal Disk Mark: Up to 500 MB/s

Max Sequential Write

-

MTBF

2,000,000 hours

MTBF

-

Options (2)

	128 GB PCIe M.2 3x4
	128 GB 2.5 Inch

-

Comparison and key differences summary

Reasons to buy the XPG SX850 256GB:

Reasons to buy the SANDISK Optimus GX PRO 850X 8TB Heatsink:

More Capacity (+7744 GB available)
Newer interface (PCIe Gen4 x4)

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