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Compare SANDISK Optimus 5100 2TB vs Silicon Power A55 4TB

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  2. Solid State Drives
  3. SANDISK Optimus 5100 2TB 🆚 Silicon Power A55 4TB
The main differences between SANDISK Optimus 5100 2TB and Silicon Power A55 4TB 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
Silicon Power A55 4TB 3D NAND SLC SATA III 2.5'' (SP004TBSS3A55S25)
Silicon Power A55 4TB
Prices
(Change region)
In Stock
Free shipping
$559.96
Prices
(Change region)
In Stock
$329.97
Last updated 20 minutes ago.
In Stock
Free shipping
$349.79
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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
Silicon Power
Model
  • SDSP51200TAN-000E0
  • SDSP51200TAN
Model
  • SP004TBSS3A55S25
  • SU004TBSS3A55S25NE
  • SP004TBSS3A55S25AY
Release Date
📅 February 2026
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.28
Price/GB
$0.08
GB/$1
3.57
GB/$1
12.12
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"
-

Comparison and key differences summary

Reasons to buy the SANDISK Optimus 5100 2TB:

  • Newer interface (PCIe Gen4 x4)

Buy now

Reasons to buy the Silicon Power A55 4TB:

  • 41% cheaper, you can save $229.99
  • More Capacity (+2000 GB available)

Buy now

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