Average Bench: 87.4% (212th of 956)

Based on 12,688 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 12.6% 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-64Thread Mixed IO Speed 118MB/s
Avg. 4K Random Read Speed 30.5MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 51.6%. This is a relatively wide range which indicates that the Samsung 840 Pro 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 253MB/s
Avg. Sequential Mixed IO Speed 256MB/s
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Average Bench

(Based on 12,688 samples)
Min Avg Max
335 Read 437 492
130 Write 320 442
167 Mixed 256 325
87.2 SusWrite 253 427
70.7% 316 MB/s
Min Avg Max
22.4 4K Read 30.5 36.8
46 4K Write 86.5 117
25.5 4K Mixed 36 44
138% 51 MB/s
Min Avg Max
33.7 DQ Read 317 378
96 DQ Write 235 314
38.8 DQ Mixed 118 155
131% 223 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
95GB free (System drive)
Firmware: DXM05B0Q
SusWrite @10s intervals: 313 339 343 337 340 331 MB/s
Read 481
Write 342
Mixed 278
SusWrite 334
80% 359 MB/s
4K Read 35.5
4K Write 109
4K Mixed 41.8
165% 62.2 MB/s
DQ Read 342
DQ Write 286
DQ Mixed 131
148% 253 MB/s
30GB free (System drive)
Firmware: DXM04B0Q
SusWrite @10s intervals: 132 113 111 107 111 112 MB/s
Read 444
Write 194
Mixed 199
SusWrite 114
52% 238 MB/s
4K Read 31.5
4K Write 90.3
4K Mixed 34.7
140% 52.2 MB/s
DQ Read 378
DQ Write 139
DQ Mixed 107
119% 208 MB/s
12,688 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,956,775 SSDs tested.

 Prices

Approx. $131 @ launch in Oct '12
AmazonUS $16012 months
OutletPCUS $19818 months
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Typical 840 Pro 128GB Builds (Compare 10,469 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: 61% - Good Total price: $1,047

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.
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  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) August 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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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 $330Nvidia GTX 1070 $380Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $240AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
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