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Compare SANDISK Optimus GX PRO 850X 1TB Heatsink vs Silicon Power A55 2TB

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  2. Solid State Drives
  3. SANDISK Optimus GX PRO 850X 1TB Heatsink 🆚 Silicon Power A55 2TB
The main differences between SANDISK Optimus GX PRO 850X 1TB Heatsink and Silicon Power A55 2TB are in Capacity, Interface, NVME and Form Factor.
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SANDISK Optimus GX PRO 850X 1TB NVMe Heatsink PCIe Gen4 x4 M.2-2280 SDSP81100TAH-000E0
SANDISK Optimus GX PRO 850X 1TB Heatsink
Silicon Power A55 2TB 3D NAND A55 SATA III 2.5" (SP002TBSS3A55S25)
Silicon Power A55 2TB
Prices
(Change region)
In Stock
Free shipping
$349.99
In Stock
Free shipping
$349.99
Prices
(Change region)
In Stock
Free shipping
$359.99
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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
  • SDSP81100TAH-000E0
  • SDSP81100TAH
Model
  • SP002TBSS3A55S25
  • SU002TBSS3A55S25
  • SU002TBSS3A55S25EU
Release Date
📅 February 2026
Release Date
📅 July 2015
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
★★★★☆
(50 reviews)
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.35
Price/GB
$0.05
GB/$1
2.86
GB/$1
19.61
Series
-
Series
Ace A55
Capacity
1000 GB
Capacity
2000 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 TLC
Max Sequential Read
-
Max Sequential Read
ATTO: up tp 560 MB/s
CDM: up to 500 MB/s
Max Sequential Write
-
Max Sequential Write
ATTO: up tp 530 MB/s
CDM: up to 450 MB/s
MTBF
-
MTBF
1,500,000 hours
-

Comparison and key differences summary

Reasons to buy the SANDISK Optimus GX PRO 850X 1TB Heatsink:

  • 3% cheaper, you can save $10.00
  • Newer Product, it was released around 11 years later
  • Newer interface (PCIe Gen4 x4)

Buy now

Reasons to buy the Silicon Power A55 2TB:

  • More Capacity (+1000 GB available)

Buy now

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