Differences What are the advantages of each

Front view of Samsung 840 Pro

Reasons to consider the
Samsung 840 Pro

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Much thinner thickness 7 mm vs 98 mm 14.1x thinner thickness
Significantly lighter 53 g vs 114 g 2.2x lighter
Higher MTBF 1,500,000 hours vs 1,000,000 hours 50% higher MTBF
More capacity per dollar 1.83 GB/$ vs 0.87 GB/$ More than 2x more capacity per dollar
Front view of OCZ RevoDrive 3 X2

Reasons to consider the
OCZ RevoDrive 3 X2

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Significantly higher capacity 960 GB vs 512 GB Around 90% higher capacity
Much higher passmark rating 7,427 pts vs 3,921 pts Around 90% higher passmark rating

Reviews Word on the street

840 Pro  vs RevoDrive 3 X2 

8.0
8.0
So the big difference in terms of performance you can likely trace to the flash memory in each drive.
840 Pro

Specifications Full list of technical specs

storage

840 Pro  vs
RevoDrive 3 X2 
Capacity 512 GB 960 GB
Interface SATA III PCI-Express
Controller Samsung MDX 4 x SandForce 2281
Memory type MLC MLC

manufacturer performance

MTBF 1,500,000 hours 1,000,000 hours

form factor

840 Pro  vs
RevoDrive 3 X2 
Form factor 2.5" PCI-E
Thickness 7 mm 98 mm
Weight 53 g 114 g

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