Compare Solid State Drives

Compare Samsung 850 EVO 250GB vs 840 EVO 250GB

Samsung 850 EVO 250GB and Samsung 840 EVO 250GB are both solid state drives with the same Capacity (250 GB), Interface (SATA 6 Gb/s) and Form Factor (2.5"). The main differences are in Performance (+3%), SSD Controller and NAND Flash Type.
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Pangoly Score (How do we rate?)
91
Pangoly Score (How do we rate?)
91
Brand
Samsung
Brand
Samsung
Model
  • MZ-75E250B/AM
  • MZ-75E250B/EU
  • MZ-75E250BW/EU
  • MZ-75E250BW
Model
MZ-7TE250BW
Release Date
📅 December 2014
Release Date
📅 August 2013
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
★★★★★
(148 reviews)
User reviews
★★★★★
(150 reviews)
Performance (Charts)
228th / 1746
(0%)
Performance (Charts)
235th / 1746
(-3%)
Effective Value
216th / 336
Effective Value
226th / 336
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.43
Price/GB
$0.48
GB/$1
2.32
GB/$1
2.08
Pros
  • Samsung MGX controller
  • 3D V-NAND
  • Competitive pricing
  • Great performance
Pros
  • Great performance
  • Samsung MEX Controller
  • Very good pricing
Cons
-
Cons
  • Questionable reliability compared to MLC NAND
Series
850 EVO
Series
840 EVO
Capacity
250 GB
Capacity
250 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
Samsung MGX
SSD Controller
Samsung MEX
NAND Flash Type
3D NAND
NAND Flash Type
1x nm Samsung Toggle DDR 2.0 3-Bit MLC NAND Flash Memory (400Mbps)
Cache
-
Cache
512MB
Max Sequential Read
Up to 540 MB/s
Max Sequential Read
-
Max Sequential Write
Up to 520 MB/s
Max Sequential Write
-
MTBF
-
MTBF
1,500,000 hours

Comparison and key differences summary

Reasons to buy the Samsung 850 EVO 250GB:

  • Slightly better performance, around +3%
  • Newer Product, it was released around 16 months later

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Reasons to buy the Samsung 840 EVO 250GB:

  • 8% cheaper, you can save $10.00
  • Slightly better effective value.

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