Average Bench: 77.3% (226th of 848)

Based on 25,433 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 22.6% 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 36.3MB/s
Avg. Sequential Read Speed 470MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Evo 120GB is 36.4%. 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 43.1MB/s
Avg. 4K-64Thread Write Speed 144MB/s
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Average Bench

(Based on 25,433 samples)
Min Avg Max
366 Read 470 504
235 Write 312 351
210 Mixed 310 343
80.6% 364 MB/s
Min Avg Max
24.6 4K Read 36.3 45.9
28 4K Write 56.9 84.8
13.4 4K Mixed 19.3 24.6
110% 37.5 MB/s
Min Avg Max
30.8 DQ Read 184 366
44 DQ Write 144 239
13.7 DQ Mixed 43.1 67.7
65.2% 124 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
94GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 501
Write 349
Mixed 343
88% 398 MB/s
4K Read 46.6
4K Write 86.5
4K Mixed 21.7
144% 51.6 MB/s
DQ Read 47.5
DQ Write 92.9
DQ Mixed 57.7
47% 66 MB/s
39GB free
Firmware: EXT0BB6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 488
Write 342
Mixed 267
81% 366 MB/s
4K Read 36.3
4K Write 68.9
4K Mixed 19.7
117% 41.6 MB/s
DQ Read 249
DQ Write 194
DQ Mixed 52.8
85% 165 MB/s
73GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 497
Write 349
Mixed 340
88% 395 MB/s
4K Read 38.8
4K Write 58.5
4K Mixed 21.7
118% 39.7 MB/s
DQ Read 58.3
DQ Write 143
DQ Mixed 56.2
56% 86 MB/s
23GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 367
Write 284
Mixed 272
68% 308 MB/s
4K Read 33.5
4K Write 39.9
4K Mixed 16.2
93% 29.9 MB/s
DQ Read 33.9
DQ Write 160
DQ Mixed 42.6
49% 78.8 MB/s
25,433 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,574,185 SSDs tested.

 Prices

AmazonUS $102.8924 days ago.
OutletPCUS $152.841 day ago.
EbayUS $159.991 day ago.
Send price feedback
Typical 840 Evo 120GB Builds (Compare 3,449 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 48%
Yacht
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 40%
Jet ski

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

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $943

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.

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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) April 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.

Good (edit your comment) Add link

1 month ago.

Suffers from severe performance degradation.


Above average

2 years ago.


Good

15 days ago.

EXELLENT

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

7 months ago.

Price vs Performance that drive is perfect


Good

1 month ago.

Super Fast and Price is exelent


Good

1 month ago.

good speed 0 fails.


Poor

1 month ago.

nice


Good

1 month ago.

best performance for this price


Good

8 days ago.

Best ssd


Poor

14 hrs ago.

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


Good

8 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.


Good

8 months ago.

great


Poor

4 months ago.

fast..


Poor

10 months ago.

Best value ever!


Good

9 months ago.

excellent


Good

2 years ago.

Low price , higher access , more faster !


Excellent

2 years ago.

This SSD is perfect.


Excellent

2 years ago.

awesome ssd


Your
opinion?
848 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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $310Nvidia GTX 1070 $330Samsung 850 Evo 250GB $106
Intel Pentium G4560 $60AMD RX 480 $220Samsung 850 Pro 256GB $140
Intel Core i5-7600K $229Nvidia GTX 1060-6GB $219Samsung 850 Evo 500GB $170
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 32GB $22
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 64GB $35
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $115SanDisk Ultra Fit 32GB $9
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