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SanDisk · PCIe 4.0 · 8000 GB

SANDISK Optimus GX PRO 850X 8TB

M.2 2280 · TLC NAND · DDR4-3200

Performance: 78
Perf / price: 6
Capacity value: 47
Amazon: $2000

View SANDISK Optimus GX PRO 850X 8TB Gallery in high resolution

$2000

Available on Amazon Updated Oct 10, 2026

Performance78.1

Performance / price5.9

Capacity value46.9

$2000 on Amazon Add this SSD to a build Compare this SSD SSD table

Written analysis

SANDISK Optimus GX PRO 850X 8TB at a glance

The SANDISK Optimus GX PRO 850X 8TB is a 8000 GB M.2 2280 SSD using PCIe 4.0 x4, NVMe 1.4. The controller is SanDisk 20-82-20035-B1. Flash type is TLC 162-layer. Cache is listed as DDR4-3200.

Rated sequential throughput is 7200 MB/s read and 6600 MB/s write. Random throughput is 1200K read IOPS and 1200K write IOPS. The calculated specification score is 78.1.

Best fit: Mainstream desktop and laptop upgrades balancing speed, capacity, and cost.

Endurance and thermals

Rated endurance is 4800 TBW, or approximately 600 TBW per TB of capacity. The listed warranty is 5 years.

Current value

At $2000, the drive costs $250.00 per TB. Performance / price is 5.9 and capacity value is 46.9. Compare these values with nearby drives below; interface generation and headline speed alone do not determine value.

Drive data

Full specifications

Interface, flash, controller, cache, throughput, endurance, power, warranty, and value in one technical sheet.

General

Manufacturer: SanDisk
SSD: SANDISK Optimus GX PRO 850X 8TB
Part number: SDSP81800TAN
Model: SDSP81800TAN
Capacity: 8000 GB
Form factor: M.2 2280
Launch price: —
Amazon price: $2000
Amazon availability: Available
Price updated: Oct 10, 2026

Performance

Sequential read: 7200 MB/s
Sequential write: 6600 MB/s
Random read: 1200K IOPS
Random write: 1200K IOPS

Value

Amazon price: $2000
Price / TB: $250.00
Performance / price: 5.9
Capacity value: 46.9

Hardware & cache

Interface: PCIe 4.0 x4, NVMe 1.4
Interface generation: PCIe 4.0
Controller: SanDisk 20-82-20035-B1
NAND: TLC 162-layer
Process: 16
Cache type: DDR4-3200
DRAM: DDR4-3200
DRAM capacity: 8192 MB
DRAM speed: 3200 MT/s
SLC cache: 2350 GB Dynamic + 96 GB Static

Durability & power

Endurance: 4800 TBW
Endurance / TB: 600 TBW
Warranty: 5 years
Idle power: —
Active power: —

Amazon

Price history

Nearby performance

Similar SSDs

Drives close to SANDISK Optimus GX PRO 850X 8TB on calculated specification performance. Open the SSD table to sort, filter, and compare side by side.

Corsair Corsair MP600 PRO LPX 8TB M.2 NVMe PCIe x4 Gen4 8000 GB · PCIe 4.0 · TLC

76.7

13.1

105.2

$875

SK hynix SK hynix Platinum P41 2TB PCIe NVMe Gen4 2000 GB · PCIe 4.0 · TLC

76.7

21.9

43.7

$526

Crucial Crucial T500 4TB Gen4 NVMe 4000 GB · PCIe 4.0 · TLC

76.9

14.4

57.7

$799

Crucial Crucial T500 2TB Gen4 NVMe 2000 GB · PCIe 4.0 · TLC

76.9

25.7

51.4

$449

Samsung Samsung 990 Pro 1 TB 1000 GB · PCIe 4.0 · TLC

77.6

48.5

$240

SanDisk SANDISK Optimus GX PRO 850X 8TB This drive

78.1

5.9

46.9

$2000

Western Digital WD_BLACK 8TB SN850X NVMe 8000 GB · PCIe 4.0 · TLC

78.1

6.7

53.6

$1750

Samsung Samsung 990 Pro 2 TB 2000 GB · PCIe 4.0 · TLC

78.2

30.1

60.2

$390

Samsung Samsung 990 Pro 4 TB 4000 GB · PCIe 4.0 · TLC

79.5

12.6

50.2

$949

Compare these in the SSD table

Discussion

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

CHAMPION YOUR GAME SESSION AND CREATIVE WORKFLOW. Boasting PCIe Gen 4.0 Sequential Read/Write speeds up to 7,300/6,600 MB/s[2] (2TB[1] and 4TB[1] models), your SSD enhances your game sessions and your creative workflow.

STAY IN THE GAME. Experience seamless game sessions and smooth multitasking with Random Read/Write speeds up to 1.2M/1.2M IOPS[2] (8TB[1] model) and integrated SANDISK nCache 4.0 technology. Supports Microsoft DirectStorage games.

NO NEED TO DELETE. Stop deleting to make room for more games or applications. With capacities up to 8TB[1] and trusted SANDISK BiCS TLC 3D NAND, you’ll have room for more.

DESIGNED WITH THE CREATOR IN MIND. With up to 4,800 TBW[3] (8TB[1] model) endurance rating, your drive stays by your side. Help protect your digital assets with TCG Opal v2.01 data-at-rest encryption.[4]

YOU CAN DO MORE WITH SANDISK SOFTWARE. Download the SANDISK Dashboard application[5] (Windows only) to help keep your drive in peak shape. Or turn on Game Mode to transform your gaming experience.