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 17,685 user samples
4,831 User Benchmarks
Best Bench: 104% 197GB free
Worst Bench: 58% 84GB free
Poor: 58% Great: 104%
SPEED RANK: 154th / 885
12,854 User Benchmarks
Best Bench: 82% 108GB free
Worst Bench: 47% 184GB free
Poor: 47% Great: 82%
SPEED RANK: 440th / 885
Effective Speed
Effective SSD Speed
84.7 % Much faster effective speed.
+30%
65.1 %
Read
Avg. Sequential Read Speed
475 MB/s +5% 454 MB/s
Write
Avg. Sequential Write Speed
413 MB/s Much faster write speed.
+70%
243 MB/s
4K Read
Avg. 4K Random Read Speed
27.9 MB/s +3% 27 MB/s
4K Write
Avg. 4K Random Write Speed
72 MB/s Much faster random write.
+48%
48.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed
415 MB/s Much faster mixed IO speed.
+74%
238 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
22.2 MB/s Much faster random mixed IO.
+50%
14.8 MB/s
Read
Peak Sequential Read Speed
515 MB/s +4% 497 MB/s
Write
Peak Sequential Write Speed
495 MB/s Much faster peak write speed.
+46%
340 MB/s
4K Read
Peak 4K Random Read Speed
35 MB/s 36.2 MB/s +3%
4K Write
Peak 4K Random Write Speed
111 MB/s Much faster peak random write.
+42%
78.4 MB/s
Mixed
Peak Sequential Mixed IO Speed
487 MB/s Much faster peak mixed IO speed.
+50%
325 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
29.6 MB/s Much faster peak random mixed IO.
+42%
20.9 MB/s
Market Share
Based on 5,659,730 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.07 % 0.4 % Hugely higher market share.
+471%
Value
Value For Money
76 % +2% 74.6 %
User Rating
UBM User Rating
64 % 64 %
Price
Price (score)
$105 $76 Cheaper.
+28%
Age
Newest
44 Months 41 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed
361 MB/s +2% 353 MB/s
DQ Write
Peak 4K-64Thread Write Speed
317 MB/s Much faster peak deep queue write.
+56%
203 MB/s
AS-SSD Total
AS-SSD Total Score
1,165 Pts Stronger server IO.
+18%
984 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.2 MB/s Faster peak deep queue mixed IO.
+28%
51 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
177 MB/s 185 MB/s +5%
ADQ Write
Avg. 4K-64Thread Write Speed
187 MB/s Much faster deep queue write.
+41%
133 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
43.4 MB/s Much faster deep queue mixed IO.
+42%
30.5 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) February 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 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $149
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $146
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $975SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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