Compare Solid State Drives

Compare Samsung 850 Pro 256GB vs 840 PRO 256GB

Samsung 850 Pro 256GB and Samsung 840 PRO 256GB are both solid state drives with the same Capacity (256 GB), Interface (SATA 6 Gb/s) and Form Factor (2.5"). The main differences are in Performance (+7%), SSD Controller, NAND Flash Type and MTBF.

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Samsung 850 Pro 256GB

Samsung 840 PRO 256GB

Prices
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In Stock

Free shipping

Prices
(Change region)

In Stock

Free shipping

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Pangoly Score (How do we rate?)

94

Pangoly Score (How do we rate?)

92

Brand

Samsung

Brand

Samsung

Model

MZ-7KE256BW

Model

MZ-7PD256BW

Release Date

📅 July 2014

Release Date

📅 October 2012

* First availability for purchase, it may not correspond to the actual market launch date.

User reviews

★★★★★

(174 reviews)

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User reviews

★★★★★

(235 reviews)

Add a product review

Performance (Charts)

216th / 1746

(0%)

Performance (Charts)

235th / 1746

(-7%)

Effective Value

265th / 336

Effective Value

268th / 336

Price history

View Details ►

Price history

View Details ►

Price/GB

$0.78

Price/GB

$0.70

GB/$1

1.28

GB/$1

1.42

Pros

Great performance
Ten-year warranty
Samsung MEX controller

Pros

Great performance
Samsung MDX controller
5-years warranty

Cons

Not cheap

Cons

-

Series

850 PRO

Series

840 Pro Series

Capacity

256 GB

Capacity

256 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 MEX

SSD Controller

Samsung MDX

NAND Flash Type

3D NAND

NAND Flash Type

MLC

Max Sequential Read

Up to 550 MB/s

Max Sequential Read

-

Max Sequential Write

Up to 520 MB/s

Max Sequential Write

-

MTBF

2,000,000 hours

MTBF

1,500,000 hours

Options (3)

	1TB SSD Only $444.45
	2TB SSD Only $844.45
	512 GB SSD Only $360.10

Options (1)

Samsung 840 PRO 512GB

512 GB
$299.99

Comparison and key differences summary

Reasons to buy the Samsung 850 Pro 256GB:

Better Pangoly Score. (How do we rate?)
Slightly better performance, around +7%
Slightly better effective value.
Newer Product, it was released around 21 months later

Reasons to buy the Samsung 840 PRO 256GB:

10% cheaper, you can save $20.00

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