Average Bench: 78.4% (205th of 848)

Based on 6,285 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 21.6% 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 28.9MB/s
Avg. 4K Random Write Speed 77MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 48.2%. 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 46.2MB/s
Avg. 4K-64Thread Read Speed 186MB/s
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Average Bench

(Based on 6,285 samples)
Min Avg Max
360 Read 484 521
98.9 Write 302 437
133 Mixed 328 474
82.1% 371 MB/s
Min Avg Max
20.5 4K Read 28.9 36.4
41.8 4K Write 77 118
13.5 4K Mixed 20.2 26.2
110% 42 MB/s
Min Avg Max
24.9 DQ Read 186 369
64.6 DQ Write 178 315
15.1 DQ Mixed 46.2 77.6
72% 137 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
10GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 400
Write 371
Mixed 373
85% 381 MB/s
4K Read 25.4
4K Write 68.5
4K Mixed 20
100% 38 MB/s
DQ Read 284
DQ Write 312
DQ Mixed 58.5
110% 218 MB/s
51GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 482
Write 276
Mixed 280
76% 346 MB/s
4K Read 28.9
4K Write 99.3
4K Mixed 20.6
123% 49.6 MB/s
DQ Read 28.9
DQ Write 98.4
DQ Mixed 18.7
27% 48.7 MB/s
61GB free
Firmware: DXM0 Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 515
Write 266
Mixed 306
80% 362 MB/s
4K Read 27.6
4K Write 55
4K Mixed 16.4
92% 33 MB/s
DQ Read 30.7
DQ Write 69
DQ Mixed 17.6
23% 39.1 MB/s
6,285 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,359,232 SSDs tested.

 Prices

AmazonUS $130.001 month ago.
OutletPCUS $197.701 month ago.
EbayUS $235.0047 secs ago.
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Typical 840 Pro 128GB Builds (Compare 5,228 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 60%
Gunboat
Desktop
Desktop 65%
Battle cruiser
Workstation
Workstation 40%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $147

EDIT WITH CUSTOM PC BUILDER Value: 64% - Good Total price: $1,044

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 (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) March 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

19 days ago.

Great SSD one of the best


Above average

3 years ago.


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848 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 $310AMD RX 480 $195Samsung 850 Evo 250GB $94
AMD Ryzen 7 1700 $320Nvidia GTX 1070 $370Samsung 850 Pro 256GB $138
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $235Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $110SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $430SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $50Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $9
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