Average Bench: 74.1% (493rd of 1000)

more Based on 9,756 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 160MB/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 33.7%. 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 131MB/s
Avg. Sequential Write Speed 152MB/s

Average Bench

(Based on 9,756 samples)
Min Avg Max
309 Read 386 438
124 Write 152 170
180 Mixed 205 220
101 SusWrite 131 155
48.3% 219 MB/s
Min Avg Max
21.5 4K Read 32.1 40.6
41.3 4K Write 83.2 120
23.5 4K Mixed 36.4 46.7
139% 50.6 MB/s
Min Avg Max
65.8 DQ Read 208 239
112 DQ Write 148 165
41.1 DQ Mixed 160 188
124% 172 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
70GB free
Firmware: 400i
SusWrite @10s intervals: 159 134 144 144 142 149 MB/s
Read 424
Write 161
Mixed 220
SusWrite 145
52% 238 MB/s
4K Read 29
4K Write 98.8
4K Mixed 35.7
142% 54.5 MB/s
DQ Read 239
DQ Write 163
DQ Mixed 192
146% 198 MB/s
18GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 106 150 171 119 128 181 MB/s
Read 365
Write 146
Mixed 216
SusWrite 142
48% 218 MB/s
4K Read 36.8
4K Write 94.6
4K Mixed 36.1
152% 55.8 MB/s
DQ Read 186
DQ Write 162
DQ Mixed 174
130% 174 MB/s
64GB free (System drive)
Firmware: 400i
SusWrite @10s intervals: 142 138 137 136 135 135 MB/s
Read 337
Write 154
Mixed 207
SusWrite 137
46% 209 MB/s
4K Read 30.7
4K Write 86.1
4K Mixed 41.3
145% 52.7 MB/s
DQ Read 240
DQ Write 151
DQ Mixed 189
143% 193 MB/s
9,756 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 14,374,785 SSDs tested.


Approx. $160 @ launch in Feb '12
AmazonUS $14915 mins
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Typical 520 Series 120GB Builds (Compare 36,676 builds) See popular component choices, score breakdowns and rankings.
Gaming 37%
Jet ski
Desktop 55%
Workstation 23%

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 55% - Above average Total price: $646

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) May 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.

1000 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 $356Nvidia GTX 1070 $314Samsung 850 Evo 250GB $92
AMD Ryzen 5 2600 $145Nvidia GTX 1060-6GB $208Samsung 850 Evo 500GB $99
AMD Ryzen 5 1600 $108Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $90SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $651SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $73Corsair Vengeance LPX DDR4 3200 C16 2x8GB $85SanDisk Ultra Fit 32GB $12
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