SanDiskSDSSDHII-240G-G25
SamsungMZ-75E250B

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

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND

Real World Speed
Performance profile from 97,581 user samples
6,093 User Benchmarks
Best Bench: 83% 75GB free
Worst Bench: 45% 37GB free
Poor: 45% Great: 83%
SPEED RANK: 405th / 848
91,488 User Benchmarks
Best Bench: 117% 47GB free
Worst Bench: 70% 82GB free
Poor: 70% Great: 117%
SPEED RANK: 56th / 848
Effective Speed
Effective SSD Speed
65.2 % -45% 94.8 % Much faster effective speed.
+45%
Read
Avg. Sequential Read Speed
448 MB/s -11% 496 MB/s Slightly faster read speed.
+11%
Write
Avg. Sequential Write Speed
241 MB/s -61% 389 MB/s Much faster write speed.
+61%
4K Read
Avg. 4K Random Read Speed
27 MB/s -40% 37.9 MB/s Much faster random read.
+40%
4K Write
Avg. 4K Random Write Speed
51.1 MB/s -53% 78.3 MB/s Much faster random write.
+53%
Mixed
Avg. Sequential Mixed IO Speed
236 MB/s -67% 393 MB/s Much faster mixed IO speed.
+67%
4K Mixed
Avg. 4K Random Mixed IO Speed
14.6 MB/s -125% 32.9 MB/s Hugely faster random mixed IO.
+125%
Read
Peak Sequential Read Speed
496 MB/s -4% 517 MB/s +4%
Write
Peak Sequential Write Speed
334 MB/s -25% 416 MB/s Faster peak write speed.
+25%
4K Read
Peak 4K Random Read Speed
35.7 MB/s -35% 48.2 MB/s Much faster peak random read.
+35%
4K Write
Peak 4K Random Write Speed
83.1 MB/s -35% 112 MB/s Much faster peak random write.
+35%
Mixed
Peak Sequential Mixed IO Speed
323 MB/s -31% 422 MB/s Much faster peak mixed IO speed.
+31%
4K Mixed
Peak 4K Random Mixed IO Speed
21 MB/s -132% 48.8 MB/s Hugely faster peak random mixed IO.
+132%
Market Share
Based on 2,355,258 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.6 % -1,383% 8.9 % Insanely higher market share.
+1,383%
Value
Value For Money
68.6 % -39% 95.3 % Much better value.
+39%
User Rating
UBM User Rating
65 % -62% 105 % Much more popular.
+62%
Price
Price (score)
$85 Slightly cheaper.
+10%
$94 -10%
Age
Newest
30 Months -10% 27 Months Slightly more recent.
+10%
DQ Read
Peak 4K-64Thread Read Speed
356 MB/s -7% 380 MB/s Slightly faster peak deep queue read.
+7%
DQ Write
Peak 4K-64Thread Write Speed
212 MB/s -34% 285 MB/s Much faster peak deep queue write.
+34%
AS-SSD Total
AS-SSD Total Score
1,000 Pts -18% 1,178 Pts Stronger server IO.
+18%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
51.3 MB/s -130% 118 MB/s Hugely faster peak deep queue mixed IO.
+130%
ADQ Read
Avg. 4K-64Thread Read Speed
193 MB/s -1% 195 MB/s +1%
ADQ Write
Avg. 4K-64Thread Write Speed
137 MB/s -40% 192 MB/s Much faster deep queue write.
+40%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
30.5 MB/s -121% 67.4 MB/s Hugely faster deep queue mixed IO.
+121%
Capacity
Capacity
240GB 250GB
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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]

MORE DETAILS

The 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders[Dec '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) March 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 $310Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
AMD Ryzen 7 1700 $325AMD RX 480 $193Samsung 850 Pro 256GB $138
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $235Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $110SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $650SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $50Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $9
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