Average Bench: 88% (345th of 1058)

Based on 37,804 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]

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 122MB/s
Avg. 4K Random Read Speed 30.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 47.1%. 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 265MB/s
Avg. Sustained Write Speed 278MB/s
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Average Bench

(Based on 37,804 samples)
Min Avg Max
345 Read 444 494
128 Write 327 441
174 Mixed 265 328
89.5 SusWrite 278 437
73.4% 328 MB/s
Min Avg Max
20.5 4K Read 30.3 36.3
39.5 4K Write 79.5 113
24.7 4K Mixed 35.4 43.8
133% 48.4 MB/s
Min Avg Max
62 DQ Read 323 376
96 DQ Write 235 322
51.1 DQ Mixed 122 155
133% 226 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
37,804 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,560,459 SSDs tested.

 Prices

MSRP ≈ $131 @ launch in Oct '12
AmazonUS $1604 years
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Typical 840 Pro 128GB Builds (Compare 8,657 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 41%
Speed boat
Desktop
Desktop 81%
Aircraft carrier
Workstation
Workstation 32%
Sail boat

Motherboard: Asrock Z77 Extreme4 - $183

EDIT WITH CUSTOM PC BUILDER Value: 42% - Average Total price: $885

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) December 2021 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 7 years ago.

Above average

7 years ago.


Your
opinion?
1058 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 i5-12600K $300Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $220Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i5-11400F $196Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $76SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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