Average Bench: 84.3% (362nd of 1016)

Based on 1,533 user benchmarks.  Model: SanDisk SDSSDXP120G

The 120GB Sandisk Extreme II proved to be a disappointment. I was expecting the same blistering performance as I saw on its larger 240GB sibling but that proved not to be the case. Comparing the 120GB and 240GB Extreme II's reveals that the larger 240GB version has peak speed ratings that are approximately 35% faster that the 120GB Extreme II. The main weakness of the 120GB Extreme II is its sequential write speed which is just 305 MB/s vs 492 MB/s on the 240GB version. Reduced write ability at lower capacities is explained by fewer NAND modules which reduce a controllers ability to parallelize slow write operations across different memory banks. Overall the Sandisk Extreme II sits amongst the bottom 20% of performers in the 120-128GB capacity category. Several of the drives in the group test have comparable performance at both the 120 and 240 GB capacities, those drives are the ones to go for. [Feb '14 SSDrivePro]


Very good average bench

The SanDisk Extreme II 120GB averaged just 15.7% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk Extreme II 120GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 133MB/s
Avg. 4K Random Read Speed 28.4MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme II 120GB is 40.1%. This is a relatively wide range which indicates that the SanDisk Extreme II 120GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 215MB/s
Avg. Sustained Write Speed 251MB/s

Average Bench

(Based on 1,533 samples)
Min Avg Max
339 Read 457 508
217 Write 290 325
161 Mixed 215 255
116 SusWrite 251 324
67.5% 303 MB/s
Min Avg Max
19.9 4K Read 28.4 34.4
43.6 4K Write 78.7 116
23.3 4K Mixed 33.2 40.8
127% 46.8 MB/s
Min Avg Max
31.9 DQ Read 288 347
101 DQ Write 238 289
35.2 DQ Mixed 133 153
135% 220 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
111GB free
Firmware: R1311
SusWrite @10s intervals: 293 317 318 318 319 319 MB/s
Read 502
Write 316
Mixed 236
SusWrite 314
76% 342 MB/s
4K Read 30.8
4K Write 81.6
4K Mixed 35.9
136% 49.4 MB/s
DQ Read 334
DQ Write 282
DQ Mixed 150
156% 255 MB/s
111GB free
Firmware: R1311
SusWrite @10s intervals: 291 318 318 319 318 318 MB/s
Read 501
Write 313
Mixed 242
SusWrite 314
76% 342 MB/s
4K Read 30.2
4K Write 77.7
4K Mixed 34.4
131% 47.4 MB/s
DQ Read 336
DQ Write 285
DQ Mixed 147
155% 256 MB/s
44GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 127 152 181 148 113 85 MB/s
Read 304
Write 189
Mixed 118
SusWrite 134
41% 186 MB/s
4K Read 22.9
4K Write 42.1
4K Mixed 23.3
87% 29.4 MB/s
DQ Read 29
DQ Write 65.4
DQ Mixed 28.5
27% 41 MB/s
1,533 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,412,919 SSDs tested.

Typical Extreme II 120GB Builds (Compare 3,647 builds) See popular component choices, score breakdowns and rankings.
Gaming 12%
Tree trunk
Desktop 57%
Workstation 34%
Sail boat

Motherboard: Gigabyte GA-H77M-D3H - $99

EDIT WITH CUSTOM PC BUILDER Value: 44% - Average Total price: $419

Popular Extreme II 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: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC

Even More Speed for Your Most Intense Applications...

Added 5 years ago.


5 years ago.

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 $205Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $45
Intel Core i5-9400F $150Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $375Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $653SanDisk Ultra Fit 32GB $14
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