SSDBoss Review Our evaluation of Extreme SSD vs 520

read performance

How quickly data is read from the drive

4K Random Read, 4K Random Read Access Time and 512K Sequential Read

write performance

How quickly data is written to the drive

4K Random Write, 4K Random Write Access Time and 512K Sequential Write

real world benchmarks

How well the drive performs common tasks

Windows 7 Boot-up Time, Photoshop Lens Filter and AS SSD ISO Copy

Benchmarks

How well the drive performs on common benchmarks

Passmark Disk Rating, PCMark Vantage and AS SSD Score

No winner declared

Too close to call

Differences What are the advantages of each

Front view of SanDisk Extreme SSD

Reasons to consider the
SanDisk Extreme SSD

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Faster 4k random write 119.02 MB/s vs 81.39 MB/s More than 45% faster 4k random write
Faster windows 7 boot-up time 9.6 s vs 11.3 s More than 15% faster windows 7 boot-up time
Significantly higher MTBF 2,000,000 hours vs 1,200,000 hours More than 65% higher MTBF
Lower 4k random read access time 2.02 ms vs 2.82 ms Around 30% lower 4k random read access time
Lower 4k random write access time 2.1 ms vs 3.08 ms More than 30% lower 4k random write access time
Faster AS SSD ISO copy 418.97 MB/s vs 262.98 MB/s Around 60% faster AS SSD ISO copy
Slightly lighter 68 g vs 78 g Around 15% lighter
Front view of Intel 520

Reasons to consider the
Intel 520

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Slightly higher PCMark vantage score 25,952 pts vs 24,620 pts More than 5% higher PCMark vantage score
Faster random read 50,000 IOPS vs 39,000 IOPS Around 30% faster random read

Benchmarks Real world tests of Extreme SSD vs Intel 520

4K Random Read

Extreme SSD
123.46 MB/s
Intel 520
88.59 MB/s

4K Random Write

Extreme SSD
119.02 MB/s
Intel 520
81.39 MB/s

Windows 7 Boot-up Time

Extreme SSD
9.6 s
Intel 520
11.3 s

Avg. Power Consumption

Extreme SSD
2.68 Watts
Intel 520
2.66 Watts

4K Random Read Access Time

Extreme SSD
2.1 ms
Intel 520
3.08 ms

4K Random Write Access Time

Extreme SSD
2.02 ms
Intel 520
2.82 ms

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