Average Bench: 87.1% (227th of 956)

Based on 14,500 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 12.9% 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 30.1MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 50.2%. 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 256MB/s
Avg. Sustained Write Speed 258MB/s
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Average Bench

(Based on 14,500 samples)
Min Avg Max
336 Read 438 494
112 Write 313 442
160 Mixed 256 321
74.9 SusWrite 258 425
70.6% 316 MB/s
Min Avg Max
22.9 4K Read 30.1 36.7
45.8 4K Write 82.7 117
25.5 4K Mixed 35.2 43.4
135% 49.4 MB/s
Min Avg Max
137 DQ Read 327 377
95 DQ Write 238 320
76.6 DQ Mixed 121 154
134% 229 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
40GB free (System drive)
Firmware: DXM03B0Q
SusWrite @10s intervals: 114 134 105 122 99 101 MB/s
Read 418
Write 180
Mixed 183
SusWrite 113
49% 223 MB/s
4K Read 25.7
4K Write 51.8
4K Mixed 26.4
100% 34.6 MB/s
DQ Read 375
DQ Write 107
DQ Mixed 106
113% 196 MB/s
35GB free (System drive)
Firmware: DXM0
SusWrite @10s intervals: 104 104 101 104 105 104 MB/s
Read 387
Write 130
Mixed 167
SusWrite 104
43% 197 MB/s
4K Read 24.8
4K Write 55.6
4K Mixed 24.9
99% 35.1 MB/s
DQ Read 373
DQ Write 122
DQ Mixed 101
113% 199 MB/s
13GB free (System drive)
Firmware: DXM06B0Q
SusWrite @10s intervals: 90 86 82 83 80 80 MB/s
Read 347
Write 110
Mixed 179
SusWrite 83.6
40% 180 MB/s
4K Read 26.8
4K Write 71.1
4K Mixed 28.1
114% 42 MB/s
DQ Read 79.9
DQ Write 98.5
DQ Mixed 65.2
56% 81.2 MB/s
14,500 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,624,187 SSDs tested.

 Prices

Approx. $131 @ launch in Oct '12
AmazonUS $16013 months
OutletPCUS $19820 months
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Typical 840 Pro 128GB Builds (Compare 11,136 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 60%
Gunboat
Desktop
Desktop 65%
Battle cruiser
Workstation
Workstation 39%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $167

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $1,007

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.
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  • - 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) September 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 - 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 4 years ago.

Above average

4 years ago.


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opinion?
956 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 $370Nvidia GTX 1070 $344Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $110
Intel Core i7-7700K $339AMD RX 480 $280Samsung 850 Pro 256GB $135
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $145SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $77G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $155SanDisk Ultra Fit 32GB $11
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