Differences What are the advantages of each

Front view of Intel DC S3500

Reasons to consider the
Intel DC S3500

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Much larger cache 1,024 MB vs 0 MB Compared to all SSDs, 1,024 MB cache is just OK
Significantly higher capacity 800 GB vs 240 GB More than 3.2x higher capacity
Significantly higher MTBF 2,000,000 hours vs 1,200,000 hours More than 65% higher MTBF
Faster random read 75,000 IOPS vs 50,000 IOPS 50% faster random read
Slightly thinner thickness 8 mm vs 10 mm More than 15% thinner thickness
Front view of Intel 520

Reasons to consider the
Intel 520

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Much faster random write 80,000 IOPS vs 11,500 IOPS Around 7x faster random write
More capacity per dollar 2 GB/$ vs 1.1 GB/$ More than 80% more capacity per dollar
Faster sequential write 520 MB/s vs 450 MB/s More than 15% faster sequential write
Faster sequential read 550 MB/s vs 500 MB/s 10% faster sequential read

Features Key features of the DC S3500  vs 520 

random read

DC S3500
75,000 IOPS
Intel 520
50,000 IOPS

random write

DC S3500
11,500 IOPS
Intel 520
80,000 IOPS

sequential read

DC S3500
500 MB/s
Intel 520
550 MB/s

sequential write

DC S3500
450 MB/s
Intel 520
520 MB/s

Specifications Full list of technical specs

storage

DC S3500  vs
520 
Capacity 800 GB 240 GB
Cache 1,024 MB 0 MB
Interface SATA III SATA III
Interface speed 6 Gbit/s 6 Gbit/s
Controller Intel PC29AS21BA0 SandForce 2281
Memory type MLC SLC
NAND process size 20 nm 25 nm
Maximum shock force 1,000G 1,500G

form factor

DC S3500  vs
520 
Form factor 2.5" 2.5"
Mfg warranty 5 years 5 years
Thickness 8 mm 10 mm
Weight 72 g 78 g

manufacturer performance

Sequential read 500 MB/s 550 MB/s
Sequential write 450 MB/s 520 MB/s
Random read 75,000 IOPS 50,000 IOPS
Random write 11,500 IOPS 80,000 IOPS
Power consumption (Idle) 0.65 Watts 0.6 Watts
Power consumption (Active) 5 Watts 0.85 Watts
MTBF 2,000,000 hours 1,200,000 hours

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