Average Bench: 91.1% (267th of 1016)

Based on 24,509 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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Excellent average bench

The Samsung 840 Pro 128GB averaged just 8.9% 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-64Thread Mixed IO Speed 123MB/s
Avg. 4K Random Read Speed 31.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 45%. This is a relatively wide range which indicates that the Samsung 840 Pro 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 267MB/s
Avg. Sustained Write Speed 285MB/s
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Average Bench

(Based on 24,509 samples)
Min Avg Max
344 Read 449 496
132 Write 334 445
184 Mixed 267 329
92.6 SusWrite 285 439
74.6% 333 MB/s
Min Avg Max
24.1 4K Read 31.3 36.9
48.8 4K Write 87.1 117
28 4K Mixed 36.8 44.7
141% 51.7 MB/s
Min Avg Max
168 DQ Read 324 377
102 DQ Write 245 327
70.8 DQ Mixed 123 155
136% 231 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
44GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 320 294 286 270 254 251 MB/s
Read 450
Write 337
Mixed 259
SusWrite 279
74% 331 MB/s
4K Read 30.4
4K Write 54.3
4K Mixed 31.7
115% 38.8 MB/s
DQ Read 364
DQ Write 129
DQ Mixed 43.7
86% 179 MB/s
22GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 266 211 162 117 96 91 MB/s
Read 402
Write 288
Mixed 240
SusWrite 157
61% 272 MB/s
4K Read 19.3
4K Write 50.9
4K Mixed 29.7
94% 33.3 MB/s
DQ Read 319
DQ Write 259
DQ Mixed 117
134% 232 MB/s
38GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 114 108 107 110 106 106 MB/s
Read 373
Write 155
Mixed 224
SusWrite 109
48% 215 MB/s
4K Read 21.6
4K Write 44.4
4K Mixed 25.8
89% 30.6 MB/s
DQ Read 188
DQ Write 119
DQ Mixed 112
95% 140 MB/s
24,509 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,681,597 SSDs tested.

 Prices

Approx. $131 @ launch in Oct '12
AmazonUS $1602 years
OutletPCUS $1983 years
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Typical 840 Pro 128GB Builds (Compare 17,220 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 50%
Yacht
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 34%
Sail boat

Motherboard: Asrock Z77 Extreme4 - $183

EDIT WITH CUSTOM PC BUILDER Value: 35% - Below average Total price: $966

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.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) January 2020 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Comments

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC

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

Added 5 years ago.

Above average

5 years ago.


Your
opinion?
1016 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 i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $43
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $340Samsung 850 Pro 512GB $204
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $643SanDisk Ultra Fit 32GB $16
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