Average Bench: 74% (594th of 1072)

more Based on 19,348 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 25.9% 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-64Thread Mixed IO Speed 164MB/s
Avg. 4K Random Read Speed 32.1MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Intel 520 Series 120GB is 31.5%. 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 133MB/s
Avg. Sequential Write Speed 156MB/s

Average Bench

(Based on 19,348 samples)
Min Avg Max
307 Read 392 446
132 Write 156 179
188 Mixed 209 224
95.2 SusWrite 133 168
49.2% 222 MB/s
Min Avg Max
22.3 4K Read 32.1 39.6
41.4 4K Write 78.9 114
25.2 4K Mixed 36.4 45.5
137% 49.2 MB/s
Min Avg Max
136 DQ Read 217 239
119 DQ Write 150 169
83.2 DQ Mixed 164 191
128% 177 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
60GB free
Firmware: 400i
SusWrite @10s intervals: 152 137 161 159 160 162 MB/s
Read 435
Write 164
Mixed 216
SusWrite 155
54% 242 MB/s
4K Read 34.9
4K Write 83.5
4K Mixed 39.3
147% 52.6 MB/s
DQ Read 239
DQ Write 168
DQ Mixed 180
141% 196 MB/s
101GB free
Firmware: 400i
SusWrite @10s intervals: 155 132 141 142 140 143 MB/s
Read 442
Write 161
Mixed 213
SusWrite 142
53% 240 MB/s
4K Read 32.6
4K Write 74.6
4K Mixed 36.2
135% 47.8 MB/s
DQ Read 237
DQ Write 171
DQ Mixed 191
146% 200 MB/s
83GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 130 129 132 129 130 128 MB/s
Read 418
Write 160
Mixed 215
SusWrite 130
51% 230 MB/s
4K Read 29.6
4K Write 60.3
4K Mixed 32.5
118% 40.8 MB/s
DQ Read 239
DQ Write 155
DQ Mixed 191
144% 195 MB/s
70GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 138 132 141 143 141 142 MB/s
Read 385
Write 163
Mixed 198
SusWrite 139
49% 221 MB/s
4K Read 27.8
4K Write 62.4
4K Mixed 29.2
113% 39.8 MB/s
DQ Read 192
DQ Write 159
DQ Mixed 148
118% 166 MB/s
19,348 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,677,398 SSDs tested


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MSRP ≈ $160 @ launch in Feb '12
AmazonUS $19915 mins
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Typical 520 Series 120GB Builds (Compare 24,229 builds) See popular component choices, score breakdowns and rankings
Gaming 2%
Tree trunk
Desktop 61%
Workstation 2%
Tree trunk

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 42% - Average Total price: $496

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 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 value for money 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) April 2024 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 10 years ago.


10 years ago.

1072 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 i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12600K $182Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12400F $133Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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