Average Bench: 77.9% - 212th / 836

Based on 5,783 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 22.1% 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 28.8MB/s
Avg. 4K Random Write Speed 76.3MB/s
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Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 49.4%. 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 47MB/s
Avg. Sequential Write Speed 295MB/s
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Average Bench

(Based on 5,783 samples)
Min Avg Max
361 Read 485 520
94.9 Write 295 438
127 Mixed 323 473
81.3% 368 MB/s
Min Avg Max
20.3 4K Read 28.8 36.2
36 4K Write 76.3 115
13 4K Mixed 19.8 25.8
109% 41.6 MB/s
Min Avg Max
24.8 DQ Read 196 369
62.9 DQ Write 175 316
14.2 DQ Mixed 47 77.3
73.2% 139 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
31GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 516
Write 355
Mixed 398
94% 423 MB/s
4K Read 36.1
4K Write 117
4K Mixed 24.7
148% 59.3 MB/s
DQ Read 340
DQ Write 299
DQ Mixed 68.4
120% 236 MB/s
97GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 518
Write 434
Mixed 349
96% 434 MB/s
4K Read 31
4K Write 65.6
4K Mixed 23.8
112% 40.1 MB/s
DQ Read 282
DQ Write 252
DQ Mixed 73
108% 202 MB/s
70GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 492
Write 346
Mixed 398
92% 412 MB/s
4K Read 22
4K Write 79.6
4K Mixed 21.7
103% 41.1 MB/s
DQ Read 23.7
DQ Write 307
DQ Mixed 69.3
82% 133 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,131,498 SSDs tested.

 Prices

AmazonUS $130.006 days ago.
OutletPCUS $197.7029 days ago.
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Typical 840 Pro 128GB Builds (Compare 4,776 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 75%
Battleship
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 41%
Speed boat

Motherboard: Asrock Z77 Extreme4 - $147

EDIT WITH CUSTOM PC BUILDER Value: 73% - Very good Total price: $1,011

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.
  • - 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) February 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

1 day ago.

Great SSD one of the best


Above average

3 years ago.


Your
opinion?
836 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 $339Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
Intel Core i5-7600K $240AMD RX 480 $177Samsung 850 Pro 256GB $130
Intel Pentium G4560 $60Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $170
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $125SanDisk Extreme 64GB $30
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $650SanDisk Extreme 32GB $26
Seagate Barracuda 7200.14 1TB $37HyperX Fury DDR4 2133 C14 2x8GB $123SanDisk Extreme 16GB $18
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