Samsung 840 

Released October, 2012
  • 250 GB
  • 2.5" SATA III
  • 256 MB
6.7 Out of 10

Benchmark Results: The incompressible nature of the data used in this benchmark had little effect on the outcome of the performance as scores are very much near where we saw on the ATTO benchmark which usually indicates a best case scenario performance outcome.
by Legit Reviews (Nov, 2012)
New dense NAND isn't quite as fast as established technology.
by PCMag (Apr, 2013)

SSDBoss Review Our evaluation of the Samsung 840

read performance

How quickly data is read from the drive

Samsung 840
6.6
840 Pro
6.6
Intel 520
5.7
4K Random Read, 4K Random Read Access Time and 512K Sequential Read

write performance

How quickly data is written to the drive

Samsung 840
6.1
840 Pro
7.0
Intel 520
6.6
4K Random Write, 4K Random Write Access Time and 512K Sequential Write

real world benchmarks

How well the drive performs common tasks

Samsung 840
7.7
840 Pro
8.1
Intel 520
7.6
Windows 7 Boot-up Time, Photoshop Lens Filter and AS SSD ISO Copy

Benchmarks

How well the drive performs on common benchmarks

Samsung 840
7.1
840 Pro
7.6
Intel 520
7.5
Passmark Disk Rating, PCMark Vantage, AS SSD Score and 1 more

6.7

SSDBoss Score

read performance, write performance, real world benchmarks and Benchmarks

Samsung 840
6.7
840 Pro
7.1
Intel 520
6.7

Benchmarks Real world tests of the Samsung 840

4K Random Read

Samsung 840
303.68 MB/s
SSDNow V300
38.7 MB/s
Intel 520
88.59 MB/s

4K Random Write

Samsung 840
76.07 MB/s
840 Pro
130.58 MB/s
Extreme SSD
119.02 MB/s

Windows 7 Boot-up Time

Samsung 840
9.3 s
Intel 520
11.3 s

Avg. Power Consumption

Samsung 840
1.69 Watts
Extreme SSD
2.68 Watts
Intel 520
2.66 Watts

4K Random Read Access Time

Samsung 840
3.29 ms
SSDNow V300
7.51 ms
MX300
5.56 ms

4K Random Write Access Time

Samsung 840
0.82 ms
SSDNow V300
6.46 ms
Intel 520
2.82 ms

Reviews Word on the street for the Samsung 840


8.0
A single large movie or ISO image will test a drive's sequential performance (assuming that the target drive isn't badly fragmented).

9.0
This means that the price per GB of flash storage will go down significantly, which enables new SSDs to be built at unprecedented price levels.

7.0
As our benchmark results show, the 840's performance is pretty decent where it counts.

Overall

8.3 Out of 10

What People Are Saying Give it to me straight

Performance

Drives using the latest technology, like the Corsair Neutron and OCZ Vector, do much better here, but steady state performance is really a borderline test-case with more scientifical than real-life value for typical consumer workloads.
by techPowerUp!
Second, is so they could offer a more affordable drive for those that want the quickness of an SSD without needing the absolute fastest drive available.
by Legit Reviews (Nov, 2012)
SLC flash is extremely fast and capable of enduring over 100,000 program/erase cycles, but is extremely expensive.
by PCMag (Apr, 2013)

Reliability

While endurance is rated to be less and a consideration, the time it would take an average user to exhaust the write lifespan of the drive is still measured in years - likely four or more.
by Legit Reviews (Nov, 2012)
The poorer endurance rating probably isn't the disaster it first seems, either.
by Tech Radar (Dec, 2012)
Finally, TLC (triple level cell) NAND offers the least in terms of endurance and performance and is generally even more affordable than MLC NAND.
by Legit Reviews (Nov, 2012)

Speed

Test Results: The boot times falls just below the median here but by no means slow.
by Legit Reviews (Nov, 2012)
The drives are also slower than SLC or MLC products—it takes longer to read and program each bit.
by PCMag (Apr, 2013)

Price

But we doubt it will be long before the influence of TLC flash can be seen throughout the industry in the form of lower prices.
by Tech Radar (Dec, 2012)
But this SSD is only going to get more tasty as the price tumbles.
by Tech Radar (Dec, 2012)

Capacity

You can also allocate more space for overprovisioning.
by Legit Reviews (Nov, 2012)
However, there's more to TLC than mere capacity, and it's not all good.
by Tech Radar (Dec, 2012)

Specifications Full list of technical specs

storage

Capacity 250 GB
Cache 256 MB
Interface SATA III
Interface speed 6 Gbit/s
Controller Samsung MDX
Memory type MLC
NAND process size 21 nm
Maximum shock force 1,500G

form factor

Form factor 2.5"
Mfg warranty 3 years
Thickness 7 mm
Weight 53 g

manufacturer performance

Sequential read 540 MB/s
Sequential write 330 MB/s
Random read 98,000 IOPS
Random write 70,000 IOPS
Power consumption (Idle) 0.05 Watts
Power consumption (Active) 0.07 Watts
MTBF 1,500,000 hours
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