Average Bench: 64.1% (472nd of 908)

more Based on 13,630 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]


Above average average bench

The SanDisk Ultra II 240GB averaged 35.8% 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 27.1MB/s
Avg. Sequential Read Speed 454MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the SanDisk Ultra II 240GB is 33.7%. This is a relatively narrow range which indicates that the SanDisk Ultra II 240GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 31.1MB/s
Avg. Sequential Mixed IO Speed 234MB/s

Average Bench

(Based on 13,630 samples)
Min Avg Max
346 Read 454 498
115 Write 237 340
114 Mixed 234 331
67.8% 308 MB/s
Min Avg Max
17.5 4K Read 27.1 36.6
21 4K Write 48.2 76.6
7.17 4K Mixed 14.3 20.8
84.8% 29.9 MB/s
Min Avg Max
21.9 DQ Read 175 349
36 DQ Write 130 206
8.19 DQ Mixed 31.1 51.4
56.2% 112 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
85GB free
Firmware: X41100RL Max speed: SATA 3.0 600 MB/s
Read 495
Write 330
Mixed 265
80% 363 MB/s
4K Read 34.2
4K Write 52.6
4K Mixed 11
94% 32.6 MB/s
DQ Read 257
DQ Write 162
DQ Mixed 11.9
62% 144 MB/s
183GB free
Firmware: X41320RL Max speed: SATA 3.0 600 MB/s
Read 483
Write 328
Mixed 296
82% 369 MB/s
4K Read 27.4
4K Write 43.3
4K Mixed 19.3
89% 30 MB/s
DQ Read 167
DQ Write 101
DQ Mixed 43.4
57% 104 MB/s
168GB free
Firmware: X41320RL Max speed: SATA 3.0 600 MB/s
Read 499
Write 323
Mixed 252
79% 358 MB/s
4K Read 30.8
4K Write 46.5
4K Mixed 11.4
86% 29.5 MB/s
DQ Read 29.1
DQ Write 54.3
DQ Mixed 11
17% 31.4 MB/s
157GB free
Firmware: X31200RL Max speed: SATA 3.0 600 MB/s
Read 475
Write 233
Mixed 257
71% 322 MB/s
4K Read 26.1
4K Write 37.9
4K Mixed 16.8
81% 27 MB/s
DQ Read 144
DQ Write 85.3
DQ Mixed 41.9
51% 90.5 MB/s
13,630 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,038,103 SSDs tested.


Approx. $110 @ launch in Sep '14
AmazonUS $754 mins
BHPhotoUS $843 hrs
EbayUS $8720 mins
NeweggUS $991 month
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Typical Ultra II 240GB Builds (Compare 18,624 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 78%
Workstation 62%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $1,180

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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC.

Everything you do on your computer - faster...

Added 3 years ago.


9 months ago.

Little workhorse....great value.


9 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.


3 years ago.

908 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 $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
Intel Core i5-8600K $243AMD RX 480 $400Samsung 850 Pro 256GB $120
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $195SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
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