Average Bench: 67.2% (647th of 1016)

Based on 7,471 user benchmarks.  Models: SanDisk SDSSDX120GG25, SATA SanDisk SDSSDX12, SanDisk SDSSDX12

Above average average bench

The SanDisk Extreme 120GB averaged 32.7% 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 121MB/s
Avg. 4K Random Read Speed 28.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme 120GB is 34.2%. This is a relatively narrow range which indicates that the SanDisk Extreme 120GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 111MB/s
Avg. Sequential Write Speed 131MB/s

Average Bench

(Based on 7,471 samples)
Min Avg Max
306 Read 387 446
109 Write 131 144
143 Mixed 178 195
80.7 SusWrite 111 125
44.5% 202 MB/s
Min Avg Max
18.4 4K Read 28.9 37.3
33.2 4K Write 74.6 115
20.2 4K Mixed 32.1 41.2
124% 45.2 MB/s
Min Avg Max
94.7 DQ Read 180 207
97 DQ Write 128 143
45.6 DQ Mixed 121 158
99% 143 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
111GB free
Firmware: R112
SusWrite @10s intervals: 110 126 121 116 111 101 MB/s
Read 393
Write 133
Mixed 193
SusWrite 114
46% 208 MB/s
4K Read 31.7
4K Write 87.5
4K Mixed 38.6
144% 52.6 MB/s
DQ Read 203
DQ Write 129
DQ Mixed 145
114% 159 MB/s
38GB free (System drive)
Firmware: R211
SusWrite @10s intervals: 113 105 106 103 106 105 MB/s
Read 387
Write 127
Mixed 182
SusWrite 106
44% 200 MB/s
4K Read 29.7
4K Write 75.8
4K Mixed 33.5
128% 46.3 MB/s
DQ Read 204
DQ Write 135
DQ Mixed 114
100% 151 MB/s
44GB free (System drive)
Firmware: R112
SusWrite @10s intervals: 98 102 103 103 99 104 MB/s
Read 421
Write 128
Mixed 185
SusWrite 102
46% 209 MB/s
4K Read 29.7
4K Write 68.6
4K Mixed 33.3
124% 43.9 MB/s
DQ Read 205
DQ Write 135
DQ Mixed 149
117% 163 MB/s
7,471 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,681,597 SSDs tested.


AmazonUS $1693 years
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Typical Extreme 120GB Builds (Compare 17,220 builds) See popular component choices, score breakdowns and rankings.
Gaming 49%
Desktop 59%
Workstation 33%
Sail boat

Motherboard: Asrock Z77 Extreme4 - $183

EDIT WITH CUSTOM PC BUILDER Value: 35% - Below average Total price: $975

Popular Extreme 120GB compatible motherboards:

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) January 2020 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: SandForce SF2281VB1-SDC. NAND: SanDisk 24nm Toggle Mode MLC

Added n/a ago.


16 months ago.

A horrible SSD that has not aged well, actually slowed down, and some of my standard 7200rpm drives are faster than it by 5-20%

1016 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 i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $43
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $340Samsung 850 Pro 512GB $204
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $643SanDisk Ultra Fit 32GB $16
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