Average Bench: 87.5% (307th of 1021)

Based on 28,464 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 12.4% 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 30.2MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 51.3%. 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 260MB/s
Avg. Sustained Write Speed 267MB/s
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Average Bench

(Based on 28,464 samples)
Min Avg Max
341 Read 443 495
131 Write 321 442
173 Mixed 260 328
88.4 SusWrite 267 436
72.1% 323 MB/s
Min Avg Max
21.7 4K Read 30.2 36.6
38.8 4K Write 81.3 116
23.4 4K Mixed 35.3 43.9
134% 49 MB/s
Min Avg Max
180 DQ Read 325 376
89.4 DQ Write 232 321
69.8 DQ Mixed 121 154
133% 226 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
119GB free
Firmware: DXM06B0Q
SusWrite @10s intervals: 369 365 367 366 367 367 MB/s
Read 491
Write 376
Mixed 302
SusWrite 367
86% 384 MB/s
4K Read 35
4K Write 105
4K Mixed 41.7
162% 60.5 MB/s
DQ Read 370
DQ Write 304
DQ Mixed 135
156% 269 MB/s
74GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 264 317 321 328 316 325 MB/s
Read 485
Write 344
Mixed 272
SusWrite 312
79% 353 MB/s
4K Read 35.3
4K Write 105
4K Mixed 40.9
162% 60.5 MB/s
DQ Read 367
DQ Write 301
DQ Mixed 127
151% 265 MB/s
20GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 205 125 99 95 92 88 MB/s
Read 368
Write 261
Mixed 242
SusWrite 117
55% 247 MB/s
4K Read 28.4
4K Write 63.8
4K Mixed 36
123% 42.7 MB/s
DQ Read 238
DQ Write 157
DQ Mixed 118
110% 171 MB/s
28,464 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 26,445,205 SSDs tested.

 Prices

Approx. $131 @ launch in Oct '12
AmazonUS $1602 years
OutletPCUS $1983 years
Send price feedback
Typical 840 Pro 128GB Builds (Compare 19,545 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 51%
Yacht
Desktop
Desktop 71%
Battleship
Workstation
Workstation 46%
Yacht

Motherboard: Asrock Z77 Extreme4 - $183

EDIT WITH CUSTOM PC BUILDER Value: 40% - Below average Total price: $932

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) May 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 6 years ago.

Above average

6 years ago.


Your
opinion?
1021 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 $165Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $199Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $55
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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