SSDBoss Review Our evaluation of 840 EVO vs Vertex 4

read performance

How quickly data is read from the drive

840 EVO
9.0
Vertex 4
8.3
4K Random Read, 4K Random Read Access Time and 512K Sequential Read

write performance

How quickly data is written to the drive

840 EVO
7.8
Vertex 4
8.1
4K Random Write, 4K Random Write Access Time and 512K Sequential Write

real world benchmarks

How well the drive performs common tasks

840 EVO
9.1
Vertex 4
8.8
Windows 7 Boot-up Time, Photoshop Lens Filter and AS SSD ISO Copy

Benchmarks

How well the drive performs on common benchmarks

840 EVO
7.5
Vertex 4
8.1
PCMark Vantage and AS SSD Score

SSDBoss Score

read performance, write performance, real world benchmarks and Benchmarks

840 EVO
8.1
Vertex 4
8.0

Winner
Samsung 840 EVO 

SSDBoss recommends the Samsung 840 EVO  based on its .

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Differences What are the advantages of each

Front view of Samsung 840 EVO

Reasons to consider the
Samsung 840 EVO

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Significantly faster 512K sequential read 507.23 MB/s vs 433.95 MB/s More than 15% faster 512K sequential read
Faster 4k random read 269.64 MB/s vs 219.67 MB/s Around 25% faster 4k random read
Larger cache 256 MB vs 24 MB Around 10.8x larger cache
Significantly lighter 53 g vs 101 g Around 50% lighter
Faster windows 7 boot-up time 9.5 s vs 10.3 s Around 10% faster windows 7 boot-up time
More capacity per dollar 1.5 GB/$ vs 0.99 GB/$ More than 50% more capacity per dollar
Thinner thickness 7 mm vs 9 mm Around 25% thinner thickness
Faster AS SSD ISO copy 302.31 MB/s vs 259.71 MB/s More than 15% faster AS SSD ISO copy
Front view of OCZ Vertex 4

Reasons to consider the
OCZ Vertex 4

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Faster 4k random write 82.53 MB/s vs 55 MB/s More than 50% faster 4k random write
Significantly higher AS SSD score 1,096 pts vs 794 pts Around 40% higher AS SSD score
Lower 4k random write access time 3.03 ms vs 4.54 ms Around 35% lower 4k random write access time
Higher MTBF 2,000,000 hours vs 1,500,000 hours Around 35% higher MTBF
Faster photoshop lens filter 56 s vs 56.9 s Almost the same
Faster power consumption (Idle) 1.3 Watts vs 0.05 Watts Around 29x faster power consumption (Idle)

Benchmarks Real world tests of 840 EVO 120 GB SATA III vs Vertex 4 128 GB SATA III

4K Random Read

840 EVO
269.64 MB/s
Vertex 4
219.67 MB/s
840 EVO Vertex 4 @ ssdreview.com

4K Random Write

840 EVO
55 MB/s
Vertex 4
82.53 MB/s
840 EVO Vertex 4 @ ssdreview.com

Windows 7 Boot-up Time

840 EVO
9.5 s
Vertex 4
10.3 s
840 EVO Vertex 4 @ ssdreview.com

Avg. Power Consumption

840 EVO
1.91 Watts
Vertex 4
2.4 Watts

4K Random Read Access Time

840 EVO
4.54 ms
Vertex 4
3.03 ms
840 EVO Vertex 4 @ ssdreview.com

4K Random Write Access Time

840 EVO
0.93 ms
Vertex 4
1.14 ms
840 EVO Vertex 4 @ ssdreview.com

Reviews Word on the street

840 EVO 120 GB SATA III  vs Vertex 4 128 GB SATA III 

9.0
8.0
The RAPID mode is designed specifically to help boost random performance and uses spare CPU power and system memory capacity (up to 1GB) to act as another layer of cache.
840 EVO

Comments

Showing 2 comments.
It's $89 for a 128GB. It's about $575 for a 1TB.
It has a full terabyte! Yet it;'s only $89. The OCZ is almost $500.
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