Average Bench: 85.7% (300th of 991)

Based on 777 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 14.2% 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 Write Speed 82.6MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme II 120GB is 42.6%. 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 216MB/s
Avg. Sustained Write Speed 257MB/s

Average Bench

(Based on 777 samples)
Min Avg Max
353 Read 462 511
216 Write 293 326
163 Mixed 216 250
130 SusWrite 257 321
68.4% 307 MB/s
Min Avg Max
19.9 4K Read 28.3 34.8
45.4 4K Write 82.6 121
24.2 4K Mixed 33.7 41.7
130% 48.2 MB/s
Min Avg Max
32.9 DQ Read 288 348
122 DQ Write 243 288
33.4 DQ Mixed 133 153
136% 221 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
35GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 290 257 264 260 247 243 MB/s
Read 489
Write 319
Mixed 217
SusWrite 260
72% 321 MB/s
4K Read 29
4K Write 94.3
4K Mixed 37.5
142% 53.6 MB/s
DQ Read 345
DQ Write 281
DQ Mixed 148
156% 258 MB/s
36GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 245 246 227 233 233 224 MB/s
Read 474
Write 267
Mixed 242
SusWrite 235
68% 305 MB/s
4K Read 31.7
4K Write 78.7
4K Mixed 35.7
135% 48.7 MB/s
DQ Read 257
DQ Write 221
DQ Mixed 145
134% 208 MB/s
30GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 203 197 176 179 172 169 MB/s
Read 466
Write 264
Mixed 212
SusWrite 183
62% 281 MB/s
4K Read 24.6
4K Write 47
4K Mixed 27.2
97% 32.9 MB/s
DQ Read 231
DQ Write 187
DQ Mixed 139
123% 186 MB/s
777 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 12,089,043 SSDs tested.

Typical Extreme II 120GB Builds (Compare 10,579 builds) See popular component choices, score breakdowns and rankings.
Gaming 59%
Desktop 65%
Battle cruiser
Workstation 39%
Jet ski

Motherboard: Asus P8Z77-V LX

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $854

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) February 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: 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.

991 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 $360Nvidia GTX 1070 $336Samsung 850 Evo 250GB $78
AMD Ryzen 5 1600 $149Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $90
Intel Core i5-8600K $259Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $750SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $126SanDisk Ultra Fit 32GB $12
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