SSDBoss Review Our evaluation of 840 Pro vs 840

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, AS SSD Score and 1 more

SSDBoss Score

read performance, write performance, real world benchmarks and Benchmarks

Winner
Samsung 840 Pro 

SSDBoss recommends the Samsung 840 Pro  based on its write performance, real world benchmarks and benchmarks.

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Differences What are the advantages of each

Front view of Samsung 840 Pro

Reasons to consider the
Samsung 840 Pro

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Higher capacity 512 GB vs 250 GB More than 2x higher capacity
Faster 4k random write 130.58 MB/s vs 76.07 MB/s More than 70% faster 4k random write
Significantly faster 512K sequential write 499.3 MB/s vs 248.62 MB/s More than 2x faster 512K sequential write
Significantly faster tom's storage bench application 733 pts vs 469 pts More than 55% faster tom's storage bench application
Faster windows 7 boot-up time 7.8 s vs 9.3 s More than 15% faster windows 7 boot-up time
Higher passmark rating 3,921 pts vs 2,563 pts Around 55% higher passmark rating
Faster AS SSD ISO copy 429.47 MB/s vs 188.99 MB/s More than 2.2x faster AS SSD ISO copy
Higher PCMark vantage score 25,929 pts vs 23,328 pts More than 10% higher PCMark vantage score
Lower 4k random write access time 1.91 ms vs 3.29 ms More than 40% lower 4k random write access time
Slightly higher AS SSD score 1,143 pts vs 1,010 pts Around 15% higher AS SSD score
Front view of Samsung 840

Reasons to consider the
Samsung 840

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Lower avg. power consumption 1.69 Watts vs 2 Watts More than 15% lower avg. power consumption

Benchmarks Real world tests of 840 Pro vs 840

4K Random Read

840 Pro
311.34 MB/s
Samsung 840
303.68 MB/s

4K Random Write

840 Pro
130.58 MB/s
Samsung 840
76.07 MB/s

Windows 7 Boot-up Time

840 Pro
7.8 s
Samsung 840
9.3 s

Avg. Power Consumption

840 Pro
2 Watts
Samsung 840
1.69 Watts

4K Random Read Access Time

840 Pro
1.91 ms
Samsung 840
3.29 ms

4K Random Write Access Time

840 Pro
0.8 ms
Samsung 840
0.82 ms

Reviews Word on the street

840 Pro  vs 840 

8.0
8.0
The random read/write performance data from SiSoft Sandra that we also quote is a measure of a drive's sustained performance when reading and writing a contiguous block of information to a randomly chosen location.
840 Pro

9.2
9.0
Early last year the company caught the SSD market by surprise with the release of their 830 Series SSD, which was followed in late 2012 by the 840 and 840 Pro that provide awesome performance and focus not only on performance, but also on reliability and long-term performance stability.
840 Pro

8.0
7.0
So the big difference in terms of performance you can likely trace to the flash memory in each drive.
840 Pro

Overall

8.7 Out of 10
8.3 Out of 10

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