Compare Solid State Drives

Compare Crucial M550 256GB vs M550 128GB

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  2. Solid State Drives
  3. Crucial M550 256GB 🆚 Crucial M550 128GB
Crucial M550 256GB and Crucial M550 128GB are both solid state drives with the same Interface (SATA 6 Gb/s), Form Factor (2.5") and SSD Controller (Marvell 9189). The main differences are in Performance (+6%), Capacity and Max Sequential Write.
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Crucial M550 256GB 2.5" SATA3 CT256M550SSD1
Crucial M550 256GB
Crucial M550 128GB 2.5" SATA3 CT128M550SSD1
Crucial M550 128GB
Prices
(Change region)
Out of Stock
Free shipping
$178.14
-
Buy now
Prices
(Change region)
Out of Stock
Free shipping
$99.41
-
Buy now
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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.
Pangoly Score (How do we rate?)
89
Pangoly Score (How do we rate?)
88
Brand
Crucial
Brand
Crucial
Model
CT256M550SSD1
Model
CT128M550SSD1
Release Date
📅 March 2014
Release Date
📅 March 2014
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
★★★★★
(152 reviews)
User reviews
★★★★★
(152 reviews)
Performance (Charts)
255th / 1746
(0%)
Performance (Charts)
276th / 1746
(-6%)
Effective Value
277th / 336
Effective Value
227th / 336
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.70
Price/GB
$0.78
GB/$1
1.44
GB/$1
1.29
Pros
  • Strong performance
  • Good upgrade over the M500
  • Marvell 88SS9189 controller
Pros
  • Strong performance
  • Good upgrade over the M500
  • Marvell 88SS9189 controller
Cons
  • Not as fast as some high-end drives
Cons
  • The 128GB version has limited writing speed
Series
M550
Series
M550
Capacity
256 GB
Capacity
128 GB
Interface
SATA 6 Gb/s
Interface
SATA 6 Gb/s
NVME
No
NVME
No
Form Factor
2.5"
Form Factor
2.5"
SSD Controller
Marvell 9189
SSD Controller
Marvell 9189
NAND Flash Type
MLC
NAND Flash Type
MLC
Max Sequential Read
Up to 550 MB/s
Max Sequential Read
Up to 550 MB/s
Max Sequential Write
Up to 500 MB/s
Max Sequential Write
Up to 350 MB/s
MTBF
1,500,000 hours
MTBF
1,500,000 hours

Comparison and key differences summary

Reasons to buy the Crucial M550 256GB:

  • Better Pangoly Score. (How do we rate?)
  • Slightly better performance, around +6%
  • More Capacity (+128 GB available)

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Reasons to buy the Crucial M550 128GB:

  • 44% cheaper, you can save $78.73
  • Moderately better effective value.

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