Average Bench: 63% - 430th / 836

Based on 3,661 user benchmarks.  Models: INTEL SSDSC2CW120A3, INTEL SSDSC2BW120A3, INTEL SS DSC2CW120A3, INTEL SSDSC2CW12, INTEL SSDSC2CW120A

The Intel 520 Series was Intel's first SSD to feature a Sandforce 2281 controller. This controller has powered countless SSDs over the last three years but is now dated and is known to be limited in the area of incompressible write speed. The 120GB Intel 520 scored peak and average sequential read/write speeds of 514/157 and 421/133. These read speeds are good but the peak write of 157 MB/s lags the group leaders average of 313 MB/s by nearly 100%. This relative inability to write lowers the 520's overall effective speed to 403 MB/s or 15% lower than the 459 MB/s achieved by the group leaders. At two years of age the Intel 520 can no longer compete with newer drives, there is far better value available amongst the group leaders[Feb '14 SSDrivePro]


Above average average bench

The Intel 520 Series 120GB averaged 36.9% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Read Speed 28.4MB/s
Avg. 4K Random Write Speed 76.3MB/s
See where your SSD ranks →

Good consistency

The range of scores (95th - 5th percentile) for the Intel 520 Series 120GB is 29.4%. This is a relatively narrow range which indicates that the Intel 520 Series 120GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 142MB/s
Avg. Sequential Mixed IO Speed 211MB/s

Average Bench

(Based on 3,661 samples)
Min Avg Max
331 Read 470 513
114 Write 142 160
158 Mixed 211 241
59.8% 275 MB/s
Min Avg Max
19.1 4K Read 28.4 38.6
37 4K Write 76.3 115
10.3 4K Mixed 15.2 20.9
103% 40 MB/s
Min Avg Max
23.6 DQ Read 131 230
54.5 DQ Write 130 165
10.1 DQ Mixed 35.9 59
53% 99 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
9GB free
Firmware: 400i Max speed: SATA 3.0 600 MB/s
Read 490
Write 143
Mixed 188
59% 273 MB/s
4K Read 33
4K Write 102
4K Mixed 19.4
129% 51.4 MB/s
DQ Read 228
DQ Write 148
DQ Mixed 48.8
74% 142 MB/s
91GB free
Firmware: 400i Max speed: SATA 3.0 600 MB/s
Read 485
Write 151
Mixed 232
63% 289 MB/s
4K Read 28.6
4K Write 92.9
4K Mixed 19.3
117% 46.9 MB/s
DQ Read 32.9
DQ Write 120
DQ Mixed 12.6
28% 55.1 MB/s
1GB free
Firmware: 400i
Read 481
Write 148
Mixed 213
61% 281 MB/s
4K Read 29.7
4K Write 98.7
4K Mixed 12.3
113% 46.9 MB/s
DQ Read 28.2
DQ Write 96.2
DQ Mixed 26.4
30% 50.2 MB/s
27GB free
Firmware: 400i Max speed: SATA 3.0 600 MB/s
Read 493
Write 129
Mixed 195
59% 272 MB/s
4K Read 22.3
4K Write 49.7
4K Mixed 12.5
76% 28.2 MB/s
DQ Read 22.9
DQ Write 137
DQ Mixed 11
29% 57.1 MB/s
3GB free
Firmware: 400i Max speed: SATA 3.0 600 MB/s
Read 489
Write 113
Mixed 161
55% 254 MB/s
4K Read 19
4K Write 53.2
4K Mixed 17
79% 29.7 MB/s
DQ Read 23.6
DQ Write 114
DQ Mixed 11.3
26% 49.5 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,130,604 SSDs tested.


AmazonUS $79.893 days ago.
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Typical 520 Series 120GB Builds (Compare 2,142 builds) See popular component choices, score breakdowns and rankings.
Gaming 76%
Desktop 69%
Battle cruiser
Workstation 52%

Motherboard: Asus SABERTOOTH Z77 - $497

EDIT WITH CUSTOM PC BUILDER Value: 77% - Very good Total price: $1,306

Popular 520 Series 120GB 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) February 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]


Controller: LSI SandForce SF2281. Flash Memory: Intel Synchronous 25nm MLC

Get fast, play fierce...

Added 2 years ago.


2 years ago.


12 days ago.

super ok

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836 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.
Intel Core i7-7700K $339Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
Intel Core i5-7600K $240AMD RX 480 $177Samsung 850 Pro 256GB $125
Intel Pentium G4560 $60Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $170
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $125SanDisk Extreme 64GB $30
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $650SanDisk Extreme 32GB $26
Seagate Barracuda 7200.14 1TB $37HyperX Fury DDR4 2133 C14 2x8GB $123SanDisk Extreme 16GB $18
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