Compare Solid State Drives

Compare SANDISK Optimus GX PRO 850X 4TB vs Western Digital 512GB M.2 WDS512G1X0C

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  2. Solid State Drives
  3. SANDISK Optimus GX PRO 850X 4TB 🆚 Western Digital 512GB M.2 WDS512G1X0C
SANDISK Optimus GX PRO 850X 4TB and Western Digital 512GB M.2 WDS512G1X0C are both solid state drives with the same Form Factor (M.2-2280). The main differences are in Capacity and Interface.
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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 512GB M.2 2280 PCIe NVMe WDS512G1X0C
Western Digital 512GB M.2 WDS512G1X0C
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)
Out of Stock
Free shipping
$288.00
-
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Brand
SanDisk
Brand
Western Digital
Model
  • SDSP81400TAN-000E0
  • SDSP81400TAN
Model
WDS512G1X0C
Release Date
📅 February 2026
Release Date
📅 February 2016
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
★★★★☆
(124 reviews)
Performance (Charts)
n/a
Performance (Charts)
187th / 1746
Effective Value
-
Effective Value
272nd / 336
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.33
Price/GB
$0.56
GB/$1
3.01
GB/$1
1.78
Series
-
Series
Black
Capacity
4000 GB
Capacity
512 GB
Interface
PCIe Gen4 x4
Interface
PCIe Gen3 x4
NVME
Yes
NVME
Yes
Form Factor
M.2-2280
Form Factor
M.2-2280
Max Sequential Read
-
Max Sequential Read
Up to 2050 MB/s
Max Sequential Write
-
Max Sequential Write
Up to 800 MB/s
MTBF
-
MTBF
1.75M hours
-

Comparison and key differences summary

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

  • Newer Product, it was released around 10 years later
  • More Capacity (+3488 GB available)
  • Newer interface (PCIe Gen4 x4)

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Reasons to buy the Western Digital 512GB M.2 WDS512G1X0C:

  • 78% cheaper, you can save $1,041.99

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