SanDiskSDSSDHII-240G-G25
SanDiskSDSSDXPS-240G

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

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

Real World Speed
Performance profile from 11,641 user samples
9,232 User Benchmarks
Best Bench: 84% 101GB free
Worst Bench: 47% 13GB free
Poor: 47% Great: 84%
SPEED RANK: 405th / 853
2,409 User Benchmarks
Best Bench: 106% 95GB free
Worst Bench: 62% 105GB free
Poor: 62% Great: 106%
SPEED RANK: 115th / 853
Effective Speed
Effective SSD Speed
65.6 % -30% 85.4 % Much faster effective speed.
+30%
Read
Avg. Sequential Read Speed
454 MB/s -5% 478 MB/s Slightly faster read speed.
+5%
Write
Avg. Sequential Write Speed
248 MB/s -67% 414 MB/s Much faster write speed.
+67%
4K Read
Avg. 4K Random Read Speed
27.6 MB/s -3% 28.3 MB/s +3%
4K Write
Avg. 4K Random Write Speed
50.4 MB/s -45% 73.1 MB/s Much faster random write.
+45%
Mixed
Avg. Sequential Mixed IO Speed
242 MB/s -72% 417 MB/s Much faster mixed IO speed.
+72%
4K Mixed
Avg. 4K Random Mixed IO Speed
14.6 MB/s -53% 22.4 MB/s Much faster random mixed IO.
+53%
Read
Peak Sequential Read Speed
498 MB/s -3% 515 MB/s +3%
Write
Peak Sequential Write Speed
342 MB/s -44% 493 MB/s Much faster peak write speed.
+44%
4K Read
Peak 4K Random Read Speed
37.2 MB/s +2% 36.3 MB/s -2%
4K Write
Peak 4K Random Write Speed
80.8 MB/s -46% 118 MB/s Much faster peak random write.
+46%
Mixed
Peak Sequential Mixed IO Speed
328 MB/s -48% 484 MB/s Much faster peak mixed IO speed.
+48%
4K Mixed
Peak 4K Random Mixed IO Speed
21.3 MB/s -41% 30.1 MB/s Much faster peak random mixed IO.
+41%
Market Share
Based on 3,271,260 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.68 % Hugely higher market share.
+300%
0.17 % -300%
Value
Value For Money
69 % -11% 76.7 % Slightly better value.
+11%
User Rating
UBM User Rating
63 % -3% 65 % +3%
Price
Price (score)
$85 Cheaper.
+19%
$105 -19%
Age
Newest
34 Months Slightly more recent.
+8%
37 Months -8%
DQ Read
Peak 4K-64Thread Read Speed
357 MB/s -2% 365 MB/s +2%
DQ Write
Peak 4K-64Thread Write Speed
208 MB/s -55% 322 MB/s Much faster peak deep queue write.
+55%
AS-SSD Total
AS-SSD Total Score
1,000 Pts -19% 1,186 Pts Stronger server IO.
+19%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
50.8 MB/s -28% 65 MB/s Faster peak deep queue mixed IO.
+28%
ADQ Read
Avg. 4K-64Thread Read Speed
174 MB/s -11% 193 MB/s Slightly faster deep queue read.
+11%
ADQ Write
Avg. 4K-64Thread Write Speed
135 MB/s -32% 178 MB/s Much faster deep queue write.
+32%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
29.3 MB/s -61% 47.1 MB/s Much faster deep queue mixed IO.
+61%
Capacity
Capacity
240GB 240GB
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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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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]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) July 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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 i7-7700K $295Nvidia GTX 1070 $390Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $268AMD RX 480 $260Samsung 850 Pro 256GB $136
Intel Core i5-7600K $224Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $165
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $714SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3000 C15 2x8GB $132SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $44HyperX Fury DDR4 2133 C14 2x8GB $133SanDisk Ultra Fit 32GB $13
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