Average Bench: 79.2% (214th of 866)

Based on 11,324 user benchmarks.  Models: Samsung SSD 840 PRO Series, Samsung SSD 840, Samsung SSD 840 PRO Seri, Samsung SSD 840 PRO

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]

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Good average bench

The Samsung 840 Pro 128GB averaged 20.7% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung 840 Pro 128GB near the top of the comparison list.

Strengths

Avg. 4K Random Read Speed 29.3MB/s
Avg. 4K Random Write Speed 79.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 43.2%. This is a relatively wide range which indicates that the Samsung 840 Pro 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Mixed IO Speed 47.4MB/s
Avg. Sequential Write Speed 303MB/s
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Average Bench

(Based on 11,324 samples)
Min Avg Max
361 Read 485 521
99 Write 303 439
142 Mixed 332 475
82.6% 373 MB/s
Min Avg Max
21.5 4K Read 29.3 35.9
42.3 4K Write 79.3 117
14.3 4K Mixed 20.4 25.3
112% 43 MB/s
Min Avg Max
26.6 DQ Read 194 369
68.3 DQ Write 179 311
15.7 DQ Mixed 47.4 77.1
73.7% 140 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
26GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 521
Write 417
Mixed 433
102% 457 MB/s
4K Read 35.8
4K Write 113
4K Mixed 22.9
143% 57.2 MB/s
DQ Read 36
DQ Write 118
DQ Mixed 22.8
33% 58.8 MB/s
52GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
NCQ !4KALIGNED SSD TRIM S.M.A.R.T
Read 503
Write 438
Mixed 469
105% 470 MB/s
4K Read 27
4K Write 54.2
4K Mixed 20.8
96% 34 MB/s
DQ Read 352
DQ Write 288
DQ Mixed 17.9
96% 219 MB/s
48GB free
Firmware: DXM0 Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 347
Write 244
Mixed 288
65% 293 MB/s
4K Read 27.8
4K Write 46.6
4K Mixed 20.7
93% 31.7 MB/s
DQ Read 134
DQ Write 97.5
DQ Mixed 42.8
52% 91.5 MB/s
11,324 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 4,711,287 SSDs tested.

 Prices

AmazonUS $1604 months
OutletPCUS $19810 months
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Typical 840 Pro 128GB Builds (Compare 6,579 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 59%
Gunboat
Desktop
Desktop 65%
Battle cruiser
Workstation
Workstation 39%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $340

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $1,171

Popular 840 Pro 128GB 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.
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  • - Compare your components to the highest voted in class.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) December 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 MDX. Flash Memory: Samsung 21nm Toggle Mode MLC.

Delivers high speeds for both compressible and incompressible data...

Added 3 years ago.

Good (edit your comment) Add link

6 months ago.

Great SSD one of the best


Above average

3 years ago.


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866 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 $313Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $285AMD RX 480 $265Samsung 850 Evo 500GB $133
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $260Samsung 850 Pro 256GB $114
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $200SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $215SanDisk Ultra Fit 32GB $10
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