Average Bench: 88% (291st of 1011)

Based on 22,347 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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Very good average bench

The Samsung 840 Pro 128GB averaged just 12.0% 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 121MB/s
Avg. 4K Random Read Speed 30.6MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 49.1%. This is a relatively wide range which indicates that the Samsung 840 Pro 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 261MB/s
Avg. Sequential Mixed IO Speed 263MB/s
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Average Bench

(Based on 22,347 samples)
Min Avg Max
344 Read 445 496
136 Write 327 445
179 Mixed 263 327
78.8 SusWrite 261 427
72.3% 324 MB/s
Min Avg Max
22.9 4K Read 30.6 36.6
43.2 4K Write 83.5 118
25 4K Mixed 35.9 44
136% 50 MB/s
Min Avg Max
37.7 DQ Read 321 376
101 DQ Write 241 328
41 DQ Mixed 121 154
134% 228 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
87GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 333 393 428 432 433 417 MB/s
Read 450
Write 405
Mixed 278
SusWrite 406
86% 385 MB/s
4K Read 28.6
4K Write 74.7
4K Mixed 39.1
133% 47.5 MB/s
DQ Read 368
DQ Write 310
DQ Mixed 152
165% 277 MB/s
90GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 409 432 427 369 127 108 MB/s
Read 407
Write 425
Mixed 310
SusWrite 312
82% 363 MB/s
4K Read 28
4K Write 75.4
4K Mixed 37.7
131% 47 MB/s
DQ Read 368
DQ Write 325
DQ Mixed 157
170% 283 MB/s
92GB free (System drive)
Firmware: DXM03B0Q
SusWrite @10s intervals: 355 361 349 363 363 360 MB/s
Read 394
Write 366
Mixed 268
SusWrite 358
78% 347 MB/s
4K Read 28.9
4K Write 65.7
4K Mixed 33.2
121% 42.6 MB/s
DQ Read 370
DQ Write 310
DQ Mixed 127
153% 269 MB/s
22,347 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,850,011 SSDs tested.

 Prices

Approx. $131 @ launch in Oct '12
AmazonUS $1602 years
OutletPCUS $1982 years
Send price feedback
Typical 840 Pro 128GB Builds (Compare 16,269 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 49%
Yacht
Desktop
Desktop 62%
Destroyer
Workstation
Workstation 33%
Sail boat

Motherboard: Asrock Z77 Extreme4 - $167

EDIT WITH CUSTOM PC BUILDER Value: 38% - Below average Total price: $1,026

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.
  • - 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) December 2019 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?
1011 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 i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
HDDRAMUSB
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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