Average Bench: 72.7% (598th of 1058)

more Based on 21,145 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 27.3% 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.

Strengths

Avg. 4K-64Thread Mixed IO Speed 165MB/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 35.4%. This is a relatively wide range which indicates that the Intel 520 Series 120GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 129MB/s
Avg. Sequential Write Speed 153MB/s
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Average Bench

(Based on 21,145 samples)
Min Avg Max
310 Read 388 448
122 Write 153 171
172 Mixed 205 221
94.9 SusWrite 129 163
48.3% 219 MB/s
Min Avg Max
21.2 4K Read 31.5 40
34.9 4K Write 77.7 113
21.2 4K Mixed 35.5 46.2
134% 48.2 MB/s
Min Avg Max
129 DQ Read 215 239
106 DQ Write 148 165
95.9 DQ Mixed 165 189
128% 176 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
33GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 131 137 139 139 140 132 MB/s
Read 444
Write 155
Mixed 217
SusWrite 136
52% 238 MB/s
4K Read 40
4K Write 108
4K Mixed 47
178% 65.1 MB/s
DQ Read 225
DQ Write 162
DQ Mixed 176
136% 187 MB/s
70GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 139 135 138 142 141 138 MB/s
Read 431
Write 160
Mixed 219
SusWrite 139
52% 237 MB/s
4K Read 39
4K Write 102
4K Mixed 43
168% 61.4 MB/s
DQ Read 238
DQ Write 159
DQ Mixed 185
142% 194 MB/s
22GB free
Firmware: 400i
SusWrite @10s intervals: 141 136 141 141 148 141 MB/s
Read 357
Write 143
Mixed 221
SusWrite 141
48% 215 MB/s
4K Read 40.1
4K Write 108
4K Mixed 45.7
177% 64.8 MB/s
DQ Read 238
DQ Write 161
DQ Mixed 192
145% 197 MB/s
24GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 148 147 156 140 108 128 MB/s
Read 322
Write 171
Mixed 191
SusWrite 138
46% 205 MB/s
4K Read 26.1
4K Write 58.2
4K Mixed 34.3
114% 39.5 MB/s
DQ Read 37.5
DQ Write 119
DQ Mixed 43.2
43% 66.6 MB/s
15GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 95 78 93 112 118 105 MB/s
Read 309
Write 139
Mixed 182
SusWrite 100
40% 183 MB/s
4K Read 19.6
4K Write 46.9
4K Mixed 26.9
89% 31.1 MB/s
DQ Read 153
DQ Write 142
DQ Mixed 128
101% 141 MB/s
21,145 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,499,237 SSDs tested.

 Prices

MSRP ≈ $160 @ launch in Feb '12
AmazonUS $17931 secs
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Typical 520 Series 120GB Builds (Compare 44,082 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 2%
Tree trunk
Desktop
Desktop 65%
Destroyer
Workstation
Workstation 2%
Tree trunk

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 47% - Average Total price: $476

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) December 2021 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]

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

Get fast, play fierce...

Added 7 years ago.

Poor

7 years ago.


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1058 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

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