Samsung 850 Pro 256GB vs 950 PRO 256GB M.2 SSD Comparison

Samsung 850 Pro 256GB and Samsung 950 PRO 256GB M.2 are both solid state drives with the same Capacity (256 GB). The main differences are in Performance (+78%), Interface, NVME and Form Factor.

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Samsung 850 Pro 256GB	Samsung 950 PRO 256GB M.2
Prices (Change region) In Stock Free shipping $199.99	Prices (Change region) In Stock Free shipping $199.99
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Pangoly Score (How do we rate?) 94	Pangoly Score (How do we rate?) 95
Brand Samsung	Brand Samsung
Model MZ-7KE256BW	Model MZ-V5P256BW
Release Date 📅 July 2014	Release Date 📅 October 2015
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (174 reviews) Add a product review	User reviews ★★★★★ (103 reviews) Add a product review
Performance (Charts) 216th / 1746 (-78%)	Performance (Charts) 132nd / 1746 (0%)
Effective Value 265th / 336	Effective Value 175th / 336
Price history View Details ►	Price history View Details ►
Price/GB $0.78	Price/GB $0.78
GB/$1 1.28	GB/$1 1.28
Pros Great performance Ten-year warranty Samsung MEX controller	Pros -
Cons Not cheap	Cons -
Series 850 PRO	Series 950 PRO
Capacity 256 GB	Capacity 256 GB
Interface SATA 6 Gb/s	Interface PCIe Gen3 x4
NVME No	NVME Yes
Form Factor 2.5"	Form Factor M.2-2280
SSD Controller Samsung MEX	SSD Controller Samsung UBX
NAND Flash Type 3D NAND	NAND Flash Type Samsung V-NAND
Cache -	Cache 512MB
Max Sequential Read Up to 550 MB/s	Max Sequential Read Up to 2200 MB/s
Max Sequential Write Up to 520 MB/s	Max Sequential Write Up to 900 MB/s
MTBF 2,000,000 hours	MTBF 1,500,000 hours