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 faster random write 90,000 IOPS vs 11,500 IOPS More than 7.8x faster random write
Faster random read 100,000 IOPS vs 75,000 IOPS Around 35% faster random read
Lighter 53 g vs 72 g More than 25% lighter
More capacity per dollar 1.83 GB/$ vs 1.1 GB/$ More than 65% more capacity per dollar
Faster sequential write 520 MB/s vs 450 MB/s More than 15% faster sequential write
Front view of Intel DC S3500

Reasons to consider the
Intel DC S3500

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Much larger cache 1,024 MB vs 256 MB 4x larger cache
Higher capacity 800 GB vs 512 GB More than 55% higher capacity
Higher MTBF 2,000,000 hours vs 1,500,000 hours Around 35% higher MTBF

Features Key features of the 840 Pro  vs DC S3500 

random read

840 Pro
100,000 IOPS
DC S3500
75,000 IOPS

random write

840 Pro
90,000 IOPS
DC S3500
11,500 IOPS

sequential read

840 Pro
540 MB/s
DC S3500
500 MB/s

sequential write

840 Pro
520 MB/s
DC S3500
450 MB/s

Specifications Full list of technical specs

storage

840 Pro  vs
DC S3500 
Capacity 512 GB 800 GB
Cache 256 MB 1,024 MB
Interface SATA III SATA III
Interface speed 6 Gbit/s 6 Gbit/s
Controller Samsung MDX Intel PC29AS21BA0
Memory type MLC MLC
NAND process size 21 nm 20 nm
Maximum shock force 1,500G 1,000G

form factor

840 Pro  vs
DC S3500 
Form factor 2.5" 2.5"
Mfg warranty 5 years 5 years
Thickness 7 mm 8 mm
Weight 53 g 72 g

manufacturer performance

Sequential read 540 MB/s 500 MB/s
Sequential write 520 MB/s 450 MB/s
Random read 100,000 IOPS 75,000 IOPS
Random write 90,000 IOPS 11,500 IOPS
Power consumption (Idle) 0.05 Watts 0.65 Watts
Power consumption (Active) 0.35 Watts 5 Watts
MTBF 1,500,000 hours 2,000,000 hours

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