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Compare SANDISK Optimus 5100 2TB vs Western Digital Blue 4TB WDS400T2B0A

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  2. Solid State Drives
  3. SANDISK Optimus 5100 2TB 🆚 Western Digital Blue 4TB WDS400T2B0A
The main differences between SANDISK Optimus 5100 2TB and Western Digital Blue 4TB WDS400T2B0A are in Capacity, Interface, NVME and Form Factor.
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SANDISK Optimus 5100 2TB NVMe PCIe Gen4 x4 M.2-2280 SDSP51200TAN-000E0
SANDISK Optimus 5100 2TB
Western Digital Blue 4TB 2.5" SATA III 3D NAND WDS400T2B0A
Western Digital Blue 4TB WDS400T2B0A
Prices
(Change region)
In Stock
Free shipping
$559.96
Prices
(Change region)
Out of Stock
Free shipping
$249.99
Out of Stock
$249.99
Out of Stock
Free shipping
$259.99
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Brand
SanDisk
Brand
Western Digital
Model
  • SDSP51200TAN-000E0
  • SDSP51200TAN
Model
WDS400T2B0A
Release Date
📅 February 2026
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
★★★★★
(300 reviews)
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.28
Price/GB
$0.06
GB/$1
3.57
GB/$1
16
Series
-
Series
Blue
Capacity
2000 GB
Capacity
4000 GB
Interface
PCIe Gen4 x4
Interface
SATA 6 Gb/s
NVME
Yes
NVME
No
Form Factor
M.2-2280
Form Factor
2.5"
NAND Flash Type
-
NAND Flash Type
3D NAND
Max Sequential Read
-
Max Sequential Read
Up to 560 MB/s
Max Sequential Write
-
Max Sequential Write
Up to 530 MB/s
MTBF
-
MTBF
Up to 1.75M hours
-
WD Blue 3D NAND 500GB 500GB
$49.99
Western Digital WDS250G2B0A 250GB
$80.00
WD Blue 2TB WDS200T2B0A 2TB
$399.79
WD Blue 3D NAND 1TB SATA 1TB
$249.00

Comparison and key differences summary

Reasons to buy the SANDISK Optimus 5100 2TB:

  • 25% cheaper, you can save $190.03
  • Newer interface (PCIe Gen4 x4)

Buy now

Reasons to buy the Western Digital Blue 4TB WDS400T2B0A:

  • More Capacity (+2000 GB available)

Buy now

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