SSDBoss Review Our evaluation of 840 Pro vs RevoDrive X2

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 Samsung 840 Pro

Reasons to consider the
Samsung 840 Pro

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Much faster windows 7 boot-up time 7.8 s vs 16.8 s 2.2x faster windows 7 boot-up time
Significantly larger cache 256 MB vs 0 MB Compared to all SSDs, 256 MB cache is just OK
Much faster photoshop lens filter 56.1 s vs 72.8 s Around 25% faster photoshop lens filter
Significantly lighter 53 g vs 130 g 2.5x lighter
Faster 4k random read 311.34 MB/s vs 251.97 MB/s Around 25% faster 4k random read
Much thinner thickness 7 mm vs 23 mm 3.3x thinner thickness
Higher PCMark vantage score 25,929 pts vs 23,101 pts More than 10% higher PCMark vantage score
Faster AS SSD ISO copy 429.47 MB/s vs 354.95 MB/s More than 20% faster AS SSD ISO copy
Front view of OCZ RevoDrive X2

Reasons to consider the
OCZ RevoDrive X2

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Significantly higher capacity 960 GB vs 512 GB Around 90% higher capacity
Significantly faster 4k random write 203.72 MB/s vs 130.58 MB/s More than 55% faster 4k random write
Faster 512K sequential write 671.29 MB/s vs 499.3 MB/s Around 35% faster 512K sequential write
Faster 512K sequential read 658.53 MB/s vs 533.44 MB/s Around 25% faster 512K sequential read
Higher MTBF 2,000,000 hours vs 1,500,000 hours Around 35% higher MTBF
Lower 4k random write access time 1.23 ms vs 1.91 ms More than 35% lower 4k random write access time
Significantly faster power consumption (Idle) 4.3 Watts vs 0.05 Watts 86x faster power consumption (Idle)

Benchmarks Real world tests of 840 Pro vs RevoDrive X2

4K Random Read

840 Pro
311.34 MB/s
RevoDrive X2
251.97 MB/s

4K Random Write

840 Pro
130.58 MB/s
RevoDrive X2
203.72 MB/s

Windows 7 Boot-up Time

840 Pro
7.8 s
RevoDrive X2
16.8 s

4K Random Read Access Time

840 Pro
1.91 ms
RevoDrive X2
1.23 ms

4K Random Write Access Time

840 Pro
0.8 ms
RevoDrive X2
0.99 ms

Reviews Word on the street

840 Pro  vs RevoDrive 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

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