Average Bench: 83.6% (387th of 1034)

more Based on 39,241 user benchmarks.  Models: SanDisk SDSSDHII240G, SanDisk Ultra II 240, SanDisk SDSSDHII, SanDis SDSSDHII240G, SanDis Ultra II 240GB, SanDisk Ultra II 240GB, SanDisk Ultra II

The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '14 SSDrivePro]

Very good average bench

The SanDisk Ultra II 240GB averaged just 16.3% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk Ultra II 240GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 209MB/s
Avg. 4K Random Mixed IO Speed 37.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk Ultra II 240GB is 40.4%. This is a relatively wide range which indicates that the SanDisk Ultra II 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 174MB/s
Avg. Sequential Mixed IO Speed 253MB/s

Average Bench

(Based on 39,241 samples)
Min Avg Max
355 Read 455 505
223 Write 376 476
156 Mixed 253 346
79.9 SusWrite 174 253
70.2% 315 MB/s
Min Avg Max
19.2 4K Read 30.4 40.2
40.2 4K Write 79 114
22.3 4K Mixed 37.3 50.8
136% 48.9 MB/s
Min Avg Max
174 DQ Read 335 390
117 DQ Write 250 310
79 DQ Mixed 209 254
179% 265 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
159GB free (System drive)
Firmware: X41200RL
SusWrite @10s intervals: 224 197 195 188 182 192 MB/s
Read 459
Write 428
Mixed 313
SusWrite 196
78% 349 MB/s
4K Read 41.3
4K Write 117
4K Mixed 49.9
188% 69.3 MB/s
DQ Read 391
DQ Write 296
DQ Mixed 243
209% 310 MB/s
223GB free
Firmware: X31200RL
SusWrite @10s intervals: 437 366 222 202 175 218 MB/s
Read 474
Write 463
Mixed 319
SusWrite 270
86% 382 MB/s
4K Read 34.8
4K Write 96.8
4K Mixed 43.9
160% 58.5 MB/s
DQ Read 346
DQ Write 311
DQ Mixed 255
211% 304 MB/s
188GB free
Firmware: X31200RL
SusWrite @10s intervals: 287 218 217 218 217 218 MB/s
Read 491
Write 320
Mixed 256
SusWrite 229
72% 324 MB/s
4K Read 34.4
4K Write 99.1
4K Mixed 38.2
154% 57.2 MB/s
DQ Read 350
DQ Write 285
DQ Mixed 170
168% 268 MB/s
16GB free (System drive)
Firmware: 20RL
SusWrite @10s intervals: 141 168 79 124 62 97 MB/s
Read 398
Write 146
Mixed 226
SusWrite 112
49% 221 MB/s
4K Read 25.5
4K Write 61.1
4K Mixed 42.4
125% 43 MB/s
DQ Read 296
DQ Write 265
DQ Mixed 163
154% 241 MB/s
39,241 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,503,538 SSDs tested.


Approx. $110 @ launch in Sep '14
BHPhotoUS $702 years
AmazonUS $745 months
Send price feedback
Typical Ultra II 240GB Builds (Compare 42,076 builds) See popular component choices, score breakdowns and rankings.
Gaming 95%
Nuclear submarine
Desktop 87%
Aircraft carrier
Workstation 90%
Nuclear submarine

Motherboard: Asus ROG STRIX B450-F GAMING - $130

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $989

Popular Ultra II 240GB 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) September 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. Memory: SanDisk 19nm TLC

Everything you do on your computer - faster...

Added 6 years ago.

Excellent (edit your comment) Add link

1 month ago.

This drive is very generic, and not innovative.


20 months ago.

Little workhorse....great value.


16 months ago.

Incompatibility with video drivers Catalyst 15.7. It takes 20 to 25 seconds on the screen of welcome. With an HDD this delay does not occur.


2 years ago.

Works fine for the most part. Never any problems.


5 years ago.

1034 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 $193Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $43
Intel Core i7-9700K $290Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i5-9400F $143Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $43
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $66SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $64SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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