Average Bench: 74.2% (520th of 1011)

more Based on 12,538 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 25.7% 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 159MB/s
Avg. 4K Random Read Speed 31.8MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Intel 520 Series 120GB is 34.9%. 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 132MB/s
Avg. Sequential Write Speed 154MB/s

Average Bench

(Based on 12,538 samples)
Min Avg Max
308 Read 388 444
126 Write 154 177
174 Mixed 206 221
104 SusWrite 132 166
48.7% 220 MB/s
Min Avg Max
22 4K Read 31.8 40.4
40.5 4K Write 83.2 118
23.4 4K Mixed 36.7 46.5
139% 50.6 MB/s
Min Avg Max
38 DQ Read 206 239
106 DQ Write 147 169
42.9 DQ Mixed 159 190
123% 171 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
29GB free
Firmware: 400i
SusWrite @10s intervals: 131 150 147 146 145 152 MB/s
Read 395
Write 158
Mixed 209
SusWrite 145
50% 227 MB/s
4K Read 39.5
4K Write 97.7
4K Mixed 43.6
167% 60.3 MB/s
DQ Read 237
DQ Write 159
DQ Mixed 185
141% 194 MB/s
62GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 145 133 141 140 136 142 MB/s
Read 425
Write 154
Mixed 212
SusWrite 140
51% 233 MB/s
4K Read 36
4K Write 76.7
4K Mixed 36.1
141% 49.6 MB/s
DQ Read 230
DQ Write 157
DQ Mixed 178
137% 189 MB/s
11GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 145 144 140 145 126 128 MB/s
Read 443
Write 162
Mixed 205
SusWrite 138
52% 237 MB/s
4K Read 31.5
4K Write 71.5
4K Mixed 31.7
126% 44.9 MB/s
DQ Read 204
DQ Write 164
DQ Mixed 185
138% 184 MB/s
10GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 134 117 116 134 121 129 MB/s
Read 326
Write 154
Mixed 203
SusWrite 125
45% 202 MB/s
4K Read 18.9
4K Write 63
4K Mixed 29.3
100% 37.1 MB/s
DQ Read 197
DQ Write 152
DQ Mixed 186
136% 178 MB/s
12,538 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,850,671 SSDs tested.


Approx. $160 @ launch in Feb '12
AmazonUS $852 months
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Typical 520 Series 120GB Builds (Compare 47,630 builds) See popular component choices, score breakdowns and rankings.
Gaming 31%
Sail boat
Desktop 51%
Workstation 22%

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.

UserBenchmark of the month

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) December 2019 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 5 years ago.


5 years ago.

1011 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 i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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