SanDiskSDSSDXPS-240G
SanDiskSDSSDHII-240G-G25

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

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

Real World Speed
Performance profile from 16,049 user samples
3,087 User Benchmarks
Best Bench: 107% 191GB free
Worst Bench: 65% 223GB free
Poor: 65% Great: 107%
SPEED RANK: 150th / 921
12,962 User Benchmarks
Best Bench: 82% 148GB free
Worst Bench: 47% 85GB free
Poor: 47% Great: 82%
SPEED RANK: 482nd / 921
Effective Speed
Effective SSD Speed
88.1 % Much faster effective speed.
+35%
65.5 %
Read
Avg. Sequential Read Speed
490 MB/s Slightly faster read speed.
+7%
457 MB/s
Write
Avg. Sequential Write Speed
434 MB/s Much faster write speed.
+77%
245 MB/s
4K Read
Avg. 4K Random Read Speed
28.7 MB/s +4% 27.7 MB/s
4K Write
Avg. 4K Random Write Speed
77.5 MB/s Much faster random write.
+54%
50.2 MB/s
Mixed
Avg. Sequential Mixed IO Speed
430 MB/s Much faster mixed IO speed.
+77%
243 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
22 MB/s Much faster random mixed IO.
+49%
14.8 MB/s
Read
Peak Sequential Read Speed
518 MB/s +4% 499 MB/s
Write
Peak Sequential Write Speed
497 MB/s Much faster peak write speed.
+45%
342 MB/s
4K Read
Peak 4K Random Read Speed
35.6 MB/s 37.5 MB/s Slightly faster peak random read.
+5%
4K Write
Peak 4K Random Write Speed
111 MB/s Much faster peak random write.
+45%
76.6 MB/s
Mixed
Peak Sequential Mixed IO Speed
486 MB/s Much faster peak mixed IO speed.
+49%
327 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
30.1 MB/s Much faster peak random mixed IO.
+45%
20.8 MB/s
Market Share
Based on 6,418,470 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.08 % 0.46 % Hugely higher market share.
+475%
Value
Value For Money
79.1 % 79.7 % +1%
User Rating
UBM User Rating
64 % 65 % +2%
Price
Price (score)
$105 $70 Much cheaper.
+33%
Age
Newest
46 Months 43 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed
367 MB/s +4% 353 MB/s
DQ Write
Peak 4K-64Thread Write Speed
319 MB/s Much faster peak deep queue write.
+54%
207 MB/s
AS-SSD Total
AS-SSD Total Score
1,178 Pts Stronger server IO.
+19%
989 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.5 MB/s Faster peak deep queue mixed IO.
+28%
51 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
184 MB/s Slightly faster deep queue read.
+5%
175 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
204 MB/s Much faster deep queue write.
+59%
128 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
44.9 MB/s Much faster deep queue mixed IO.
+48%
30.4 MB/s
Capacity
Capacity
240GB 240GB
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The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

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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]

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Solid State Drive Rankings (Price vs Performance) April 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]

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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.
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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $80
AMD Ryzen 5 1600 $170Nvidia GTX 1060-6GB $310Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $45
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $204SanDisk Ultra Fit 32GB $12
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