Average Bench: 78% (219th of 853)

Based on 8,251 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 22.0% 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 Random Read Speed 28.5MB/s
Avg. 4K Random Write Speed 76.6MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Pro 128GB is 47.6%. 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 47.2MB/s
Avg. Sequential Write Speed 298MB/s
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Average Bench

(Based on 8,251 samples)
Min Avg Max
365 Read 485 520
92.8 Write 298 439
119 Mixed 327 475
81.7% 370 MB/s
Min Avg Max
19.8 4K Read 28.5 36
40.8 4K Write 76.6 116
13.2 4K Mixed 20 25.6
109% 41.7 MB/s
Min Avg Max
25.5 DQ Read 197 367
63.1 DQ Write 175 315
15 DQ Mixed 47.2 78.2
73.3% 140 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
53GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 517
Write 344
Mixed 390
92% 417 MB/s
4K Read 34.1
4K Write 104
4K Mixed 22.4
136% 53.5 MB/s
DQ Read 329
DQ Write 291
DQ Mixed 63.6
115% 228 MB/s
77GB free
Firmware: DXM06B0Q Max speed: SATA 3.0 600 MB/s
NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 519
Write 434
Mixed 480
106% 478 MB/s
4K Read 21.1
4K Write 33.2
4K Mixed 15.3
69% 23.2 MB/s
DQ Read 17.7
DQ Write 108
DQ Mixed 34
35% 53.2 MB/s
39GB free
Firmware: DXM04B0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 413
Write 321
Mixed 276
75% 337 MB/s
4K Read 27.1
4K Write 62.5
4K Mixed 15.6
94% 35.1 MB/s
DQ Read 32.8
DQ Write 103
DQ Mixed 19.5
29% 51.7 MB/s
8,251 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,281,939 SSDs tested.

 Prices

AmazonUS $130.005 months ago.
OutletPCUS $197.705 months ago.
EbayUS $235.006 mins ago.
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Typical 840 Pro 128GB Builds (Compare 6,949 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 59%
Gunboat
Desktop
Desktop 65%
Destroyer
Workstation
Workstation 39%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $260

EDIT WITH CUSTOM PC BUILDER Value: 59% - Above average Total price: $1,243

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.
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  • - 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) July 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

1 month ago.

Great SSD one of the best


Above average

3 years ago.


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853 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 $295Nvidia GTX 1070 $390Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $268AMD RX 480 $260Samsung 850 Pro 256GB $136
Intel Core i5-7600K $238Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $159
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $714SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3000 C15 2x8GB $132SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $44HyperX Fury DDR4 2133 C14 2x8GB $143SanDisk Ultra Fit 32GB $13
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