Average Bench: 73% (443rd of 959)

more Based on 7,801 user benchmarks.  Models: INTEL SSDSC2CW120A3, INTEL SSDSC2BW120A3, INTEL SSDSC2CW120A3H, INTE SSDSC2CW120A3, 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]


Good average bench

The Intel 520 Series 120GB averaged 27.0% 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-64Thread Mixed IO Speed 155MB/s
Avg. 4K Random Read Speed 31.5MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Intel 520 Series 120GB is 33.9%. This is a relatively narrow range which indicates that the Intel 520 Series 120GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 129MB/s
Avg. Sequential Write Speed 152MB/s

Average Bench

(Based on 7,801 samples)
Min Avg Max
301 Read 385 442
124 Write 152 168
167 Mixed 203 219
98.3 SusWrite 129 159
48% 217 MB/s
Min Avg Max
21.9 4K Read 31.5 39.4
37.8 4K Write 80.8 116
22.8 4K Mixed 36.2 46
137% 49.5 MB/s
Min Avg Max
37.3 DQ Read 202 238
98.1 DQ Write 144 165
36.1 DQ Mixed 155 188
121% 167 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
16GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 124 132 124 125 114 105 MB/s
Read 391
Write 149
Mixed 199
SusWrite 121
47% 215 MB/s
4K Read 38
4K Write 106
4K Mixed 41.3
166% 61.7 MB/s
DQ Read 238
DQ Write 156
DQ Mixed 169
134% 188 MB/s
51GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 136 134 136 138 135 131 MB/s
Read 355
Write 149
Mixed 206
SusWrite 135
47% 211 MB/s
4K Read 35.5
4K Write 113
4K Mixed 42.4
168% 63.7 MB/s
DQ Read 191
DQ Write 159
DQ Mixed 164
126% 171 MB/s
25GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 117 118 126 156 152 129 MB/s
Read 339
Write 171
Mixed 212
SusWrite 133
47% 214 MB/s
4K Read 34.8
4K Write 76
4K Mixed 38.1
142% 49.6 MB/s
DQ Read 208
DQ Write 136
DQ Mixed 143
114% 162 MB/s
7,801 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,101,029 SSDs tested.


Approx. $160 @ launch in Feb '12
AmazonUS $11918 mins
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Typical 520 Series 120GB Builds (Compare 24,042 builds) See popular component choices, score breakdowns and rankings.
Gaming 37%
Jet ski
Desktop 54%
Workstation 23%

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $624

Popular 520 Series 120GB systems:

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.
  • - Compare your components to the current market leaders.
  • - 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) October 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.


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

Get fast, play fierce...

Added 4 years ago.


4 years ago.

959 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 i7-8700K $370Nvidia GTX 1070 $350Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $110
Intel Core i7-7700K $355AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $55Corsair Vengeance LPX DDR4 3200 C16 2x8GB $160SanDisk Ultra Fit 32GB $12
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