Average Bench: 73.6% (413th of 956)

Based on 952 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 26.3% 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 Random Read Speed 26.8MB/s
Avg. 4K Random Write Speed 74.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme II 120GB is 39.1%. 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 261MB/s
Avg. Sequential Write Speed 265MB/s

Average Bench

(Based on 952 samples)
Min Avg Max
331 Read 444 489
165 Write 265 318
184 Mixed 289 357
138 SusWrite 261 320
70.2% 315 MB/s
Min Avg Max
19.5 4K Read 26.8 34.6
34.5 4K Write 74.9 113
11.5 4K Mixed 20.8 37.3
107% 40.8 MB/s
Min Avg Max
24.2 DQ Read 191 344
51.4 DQ Write 180 282
10.8 DQ Mixed 49.3 148
74.5% 140 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
31GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 268 255 248 244 234 236 MB/s
Read 507
Write 275
Mixed 221
SusWrite 248
69% 313 MB/s
4K Read 33.4
4K Write 104
4K Mixed 38.7
155% 58.8 MB/s
DQ Read 336
DQ Write 250
DQ Mixed 149
150% 245 MB/s
67GB free (System drive)
Firmware: R1311
SusWrite @10s intervals: 312 290 294 308 216 208 MB/s
Read 366
Write 277
Mixed 188
SusWrite 271
62% 275 MB/s
4K Read 27.7
4K Write 92.3
4K Mixed 31.4
131% 50.5 MB/s
DQ Read 33.7
DQ Write 129
DQ Mixed 28.5
37% 63.6 MB/s
21GB free (System drive)
Firmware: R131
SusWrite @10s intervals: 277 229 224 187 178 161 MB/s
Read 420
Write 308
Mixed 228
SusWrite 209
65% 291 MB/s
4K Read 23
4K Write 47.5
4K Mixed 25.2
92% 31.9 MB/s
DQ Read 252
DQ Write 217
DQ Mixed 144
133% 204 MB/s
952 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,979,188 SSDs tested.

Typical Extreme II 120GB Builds (Compare 1,831 builds) See popular component choices, score breakdowns and rankings.
Gaming 64%
Desktop 62%
Workstation 42%
Speed boat

Motherboard: Gigabyte GA-H77M-D3H - $160

EDIT WITH CUSTOM PC BUILDER Value: 67% - Good Total price: $930

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) August 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.

956 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 $380Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $249AMD RX 480 $280Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback