Compare Solid State Drives

Compare SANDISK Optimus GX PRO 850X 4TB vs Western Digital BLACK SN850X 8TB

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  2. Solid State Drives
  3. SANDISK Optimus GX PRO 850X 4TB 🆚 Western Digital BLACK SN850X 8TB
SANDISK Optimus GX PRO 850X 4TB and Western Digital BLACK SN850X 8TB 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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SANDISK Optimus GX PRO 850X 4TB NVMe PCIe Gen4 x4 M.2-2280 SDSP81400TAN-000E0
SANDISK Optimus GX PRO 850X 4TB
Western Digital BLACK SN850X 8TB NVMe WDS800T2X0E
Western Digital BLACK SN850X 8TB
Prices
(Change region)
In Stock
$1,329.99
In Stock
Free shipping
$1,329.99
In Stock
$1,329.99
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Prices
(Change region)
In Stock
$1,399.99
Last updated 0 minutes ago.
Out of Stock
Free shipping
$1,399.99
Out of Stock
Free shipping
$1,459.99
Show 1 more offers
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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
SanDisk
Brand
Western Digital
Model
  • SDSP81400TAN-000E0
  • SDSP81400TAN
Model
WDS800T2X0E
Release Date
📅 February 2026
Release Date
📅 July 2024
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
★★★★☆
(86 reviews)
Performance (Charts)
n/a
Performance (Charts)
27th / 1746
Effective Value
-
Effective Value
139th / 336
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.33
Price/GB
$0.11
GB/$1
3.01
GB/$1
9.41
Series
-
Series
Black
Capacity
4000 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
Max Sequential Read
-
Max Sequential Read
Up to 7200 MB/s
Max Sequential Write
-
Max Sequential Write
Up to 6600 MB/s
MTBF
-
MTBF
1.75M Hours
-

Comparison and key differences summary

Reasons to buy the SANDISK Optimus GX PRO 850X 4TB:

  • 5% cheaper, you can save $70.00
  • Newer Product, it was released around 19 months later

Buy now

Reasons to buy the Western Digital BLACK SN850X 8TB:

  • More Capacity (+4000 GB available)

Buy now

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