Average Bench: 78% (222nd of 857)

Based on 32,442 user benchmarks.  Models: Samsung SSD 840 EVO 120GB, Samsung SSD 840 EVO 1, Samsung SSD 840 EVO 120G, Samsung SSD 840 EVO

The 120GB Evo, like its 250GB sibling, features a second level Turbowrite cache (TWC). This 3GB block of high speed SLC memory allows the Evo to write data at 370 MB/s, nearly double its normal rate. When the TWC is full write speeds drop by around 50% but since consumers generally write less than 3GB in a typical write operation, the performance drop will rarely be noticed. On the other hand, in a server environment this sort of performance degradation would be unacceptable. Comparing the 120GB and 250GB Evos shows that they have similar performance profiles. The performance equivalence between the different capacities, coupled with the fact that their prices are almost linear, implies that both capacities represent roughly the same value for money. Within its TWC, the 120GB Evo is capable of chart topping burst IO rates and it sits squarely amongst the best performing 120GB drives. [Aug '14 SSDrivePro]

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Good average bench

The Samsung 840 Evo 120GB averaged 21.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung 840 Evo 120GB near the top of the comparison list.

Strengths

Avg. 4K Random Read Speed 36.8MB/s
Avg. Sequential Read Speed 475MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Evo 120GB is 37.2%. This is a relatively wide range which indicates that the Samsung 840 Evo 120GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Mixed IO Speed 41.3MB/s
Avg. 4K-64Thread Write Speed 152MB/s
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Average Bench

(Based on 32,442 samples)
Min Avg Max
366 Read 475 502
216 Write 309 351
174 Mixed 307 342
80.4% 364 MB/s
Min Avg Max
24.8 4K Read 36.8 45.5
29.2 4K Write 58.1 83.1
10.9 4K Mixed 19.2 24.5
111% 38 MB/s
Min Avg Max
30.5 DQ Read 194 362
48.6 DQ Write 152 240
11.9 DQ Mixed 41.3 68.2
66.8% 129 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
26GB free
Firmware: EXT0CB6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 487
Write 341
Mixed 334
86% 387 MB/s
4K Read 37.4
4K Write 75
4K Mixed 20.2
122% 44.2 MB/s
DQ Read 43.9
DQ Write 224
DQ Mixed 22.9
50% 97 MB/s
35GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 501
Write 353
Mixed 338
88% 397 MB/s
4K Read 33
4K Write 44.6
4K Mixed 16.8
95% 31.5 MB/s
DQ Read 37.3
DQ Write 50
DQ Mixed 16.6
20% 34.6 MB/s
57GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 499
Write 334
Mixed 342
87% 392 MB/s
4K Read 31.9
4K Write 42.9
4K Mixed 16.3
92% 30.3 MB/s
DQ Read 36.3
DQ Write 55.9
DQ Mixed 16
21% 36.1 MB/s
32,442 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,562,128 SSDs tested.

 Prices

AmazonUS $139.9916 days ago.
EbayUS $169.9919 mins ago.
OutletPCUS $182.842 hrs ago.
Send price feedback
Typical 840 Evo 120GB Builds (Compare 4,626 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 48%
Yacht
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 39%
Jet ski

Motherboard: MSI Z87-G45 GAMING (MS-7821) - $242

EDIT WITH CUSTOM PC BUILDER Value: 60% - Good Total price: $983

Popular 840 Evo 120GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) August 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

 Comments

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC.

Experience a brand new, faster performance...

Added 3 years ago.

Poor (edit your comment) Add link

2 months ago.

Suffers from severe performance degradation.


Disliked

2 months ago.

Comment 

Good for general purpose use - best compromise between Price and performance. I have bought over 20 of these to retrofit into Laptops and desktop pc's to give a performance boost especially with a clean Windows 8.1 install. Makes a cheap Celeron Laptop fly like a new core i5 laptop with a standard electro-mechanical Hdd. PC World will not sell computers with SSD's in because if people savvy the huge performance boot you get with an SSD they will just buy a cheap sub £200 laptop and clone the disk to an SSD. Dell hike their prices to fit a 250GB SSD when you buy a new PC by £350 - WHAT A RIP OFF, No wonder they are going out of business. The 250GB and 500GB Samsung SSD's are equally good - recommended in fact. I have bought all of these in some quantity.—Oct '14


Good

11 months ago.

Price vs Performance that drive is perfect


Poor

1 month ago.

best performance for this price


Good

3 months ago.

Super Fast and Price is exelent


Poor

3 months ago.

good speed 0 fails.


Above average

3 years ago.


Poor

3 months ago.

Best ssd


Good

2 months ago.

i love this ssd, still fast on my old laptop with SATA 2.


Good

12 months ago.

Works really great. I've had it for 3 months already and had no troubles with it. It's fast and cheap. My 4 year old HP DV7-3180us feels like new with it.


Poor

14 months ago.

Best value ever!


Good

2 years ago.

Low price , higher access , more faster !


Excellent

3 years ago.

This SSD is perfect.


Excellent

2 years ago.

awesome ssd


Your
opinion?
857 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

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