Average Bench: 78.6% (265th of 921)

Based on 13,467 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 21.3% 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 28.8MB/s
Avg. 4K Random Write Speed 77.2MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 40.5%. 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 44.7MB/s
Avg. 4K-64Thread Read Speed 180MB/s
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Average Bench

(Based on 13,467 samples)
Min Avg Max
368 Read 486 521
113 Write 308 439
149 Mixed 337 475
83.5% 377 MB/s
Min Avg Max
20.3 4K Read 28.8 35.8
40.3 4K Write 77.2 111
13.7 4K Mixed 20.1 24.8
110% 42.1 MB/s
Min Avg Max
26.4 DQ Read 180 361
68.6 DQ Write 175 310
14.9 DQ Mixed 44.7 77.2
70.1% 133 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
78GB free
Firmware: DXM05B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 519
Write 336
Mixed 379
91% 412 MB/s
4K Read 34.9
4K Write 112
4K Mixed 19.9
138% 55.6 MB/s
DQ Read 237
DQ Write 295
DQ Mixed 38.8
92% 190 MB/s
22GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 514
Write 293
Mixed 359
86% 388 MB/s
4K Read 20.9
4K Write 52.4
4K Mixed 17.8
82% 30.4 MB/s
DQ Read 234
DQ Write 159
DQ Mixed 60.9
82% 151 MB/s
13,467 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,415,947 SSDs tested.

 Prices

Approx. $131 @ launch in Oct '12
AmazonUS $1608 months
OutletPCUS $19815 months
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Typical 840 Pro 128GB Builds (Compare 8,653 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 60%
Gunboat
Desktop
Desktop 64%
Destroyer
Workstation
Workstation 39%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $270

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $1,085

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 (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.
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Solid State Drive Rankings (Price vs Performance) April 2018 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]

Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.

 Comments

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

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

Added 4 years ago.

Above average

4 years ago.


Your
opinion?
921 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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $80
AMD Ryzen 5 1600 $170Nvidia GTX 1060-6GB $310Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $45
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $204SanDisk Ultra Fit 32GB $12
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