Average Bench: 76% (404th of 959)

Based on 915 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]


Good average bench

The SanDisk Extreme II 120GB averaged 23.9% 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 Random Read Speed 27.1MB/s
Avg. 4K Random Write Speed 76.1MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme II 120GB is 43.2%. This is a relatively wide range which indicates that the SanDisk Extreme II 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 250MB/s
Avg. Sequential Mixed IO Speed 267MB/s

Average Bench

(Based on 915 samples)
Min Avg Max
338 Read 447 507
179 Write 272 323
173 Mixed 267 354
118 SusWrite 250 320
68.9% 309 MB/s
Min Avg Max
19.6 4K Read 27.1 34.6
36.3 4K Write 76.1 116
11.9 4K Mixed 24.1 40
112% 42.4 MB/s
Min Avg Max
24.5 DQ Read 210 346
58.1 DQ Write 189 285
10.8 DQ Mixed 71.3 151
88.6% 157 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
91GB free
Firmware: R1311
SusWrite @10s intervals: 310 322 307 325 325 325 MB/s
Read 396
Write 285
Mixed 191
SusWrite 319
67% 298 MB/s
4K Read 32.6
4K Write 109
4K Mixed 34.9
152% 58.9 MB/s
DQ Read 340
DQ Write 276
DQ Mixed 148
154% 255 MB/s
27GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 270 176 218 206 190 203 MB/s
Read 480
Write 266
Mixed 225
SusWrite 210
66% 295 MB/s
4K Read 27
4K Write 82.6
4K Mixed 34.2
128% 47.9 MB/s
DQ Read 337
DQ Write 274
DQ Mixed 138
149% 250 MB/s
62GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 313 314 308 315 314 282 MB/s
Read 476
Write 309
Mixed 235
SusWrite 308
74% 332 MB/s
4K Read 24.4
4K Write 47
4K Mixed 27.6
97% 33 MB/s
DQ Read 216
DQ Write 172
DQ Mixed 31.8
68% 140 MB/s
915 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,117,073 SSDs tested.

Typical Extreme II 120GB Builds (Compare 1,758 builds) See popular component choices, score breakdowns and rankings.
Gaming 40%
Jet ski
Desktop 61%
Workstation 40%
Speed boat

Motherboard: Gigabyte GA-H77M-D3H - $160

EDIT WITH CUSTOM PC BUILDER Value: 58% - Above average Total price: $845

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) October 2018 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 4 years ago.


4 years ago.

959 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 $370Nvidia GTX 1070 $350Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $355AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $157SanDisk Ultra Fit 32GB $12
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