SSDBoss Review Our evaluation of Extreme PRO SSD vs 840 EVO

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

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 PRO SSD

Reasons to consider the
SanDisk Extreme PRO SSD

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SSDBoss is not aware of any important advantages of the SanDisk Extreme PRO SSD vs the Samsung 840 EVO.

Sibling view of Samsung 840 EVO

Reasons to consider the
Samsung 840 EVO

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Much larger cache 1,000 MB vs 24 MB Around 41.8x larger cache
Significantly faster windows 7 boot-up time 9.3 s vs 13.5 s More than 30% faster windows 7 boot-up time
Faster 4k random read 318.8 MB/s vs 233.53 MB/s More than 35% faster 4k random read
Faster 4k random write 106.65 MB/s vs 90.93 MB/s More than 15% faster 4k random write
Significantly faster photoshop lens filter 56.6 s vs 63.8 s More than 10% faster photoshop lens filter
Higher PCMark vantage score 25,582 pts vs 21,680 pts Around 20% higher PCMark vantage score
Lower 4k random read access time 0.78 ms vs 1.07 ms More than 25% lower 4k random read access time
Slightly lower 4k random write access time 2.34 ms vs 2.75 ms Around 15% lower 4k random write access time

Benchmarks Real world tests of Extreme PRO SSD vs 840 EVO

4K Random Read

Extreme PRO SSD
233.53 MB/s
840 EVO
318.8 MB/s

4K Random Write

Extreme PRO SSD
90.93 MB/s
840 EVO
106.65 MB/s

Windows 7 Boot-up Time

840 EVO
9.3 s

Avg. Power Consumption

Extreme PRO SSD
2.34 Watts
840 EVO
2.29 Watts

4K Random Read Access Time

Extreme PRO SSD
2.75 ms
840 EVO
2.34 ms

4K Random Write Access Time

Extreme PRO SSD
1.07 ms
840 EVO
0.78 ms

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