Samsung 850 Pro 512GB vs 840 PRO 512GB SSD Comparison

Samsung 850 Pro 512GB and Samsung 840 PRO 512GB are both solid state drives with the same Capacity (512 GB), Interface (SATA 6 Gb/s) and Form Factor (2.5"). The main differences are in Performance (+5%), SSD Controller, NAND Flash Type and MTBF.

Save comparison

Samsung 850 Pro 512GB	Samsung 840 PRO 512GB
Prices (Change region) In Stock Free shipping $360.10	Prices (Change region) Out of Stock Free shipping $299.99 - Buy now
* Pangoly may earn a commission when you use one of the links to make a purchase. (Disclosure) * 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?) 94	Pangoly Score (How do we rate?) 92
Brand Samsung	Brand Samsung
Model MZ-7KE512BW	Model MZ-7PD512BW
Release Date 📅 July 2014	Release Date 📅 October 2012
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (191 reviews) Add a product review	User reviews ★★★★★ (235 reviews) Add a product review
Performance (Charts) 216th / 1746 (0%)	Performance (Charts) 232nd / 1746 (-5%)
Effective Value 306th / 336	Effective Value 300th / 336
Price history View Details ►	Price history View Details ►
Price/GB $0.70	Price/GB $0.59
GB/$1 1.42	GB/$1 1.71
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 512 GB	Capacity 512 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