SamsungMZ-75E250B
SanDiskSDSSDHII-240G-G25

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

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

Real World Speed
Performance profile from 107,966 user samples
100,708 User Benchmarks
Best Bench: 117% 173GB free
Worst Bench: 71% 153GB free
Poor: 71% Great: 117%
SPEED RANK: 54th / 848
7,258 User Benchmarks
Best Bench: 83% 27GB free
Worst Bench: 47% 194GB free
Poor: 47% Great: 83%
SPEED RANK: 404th / 848
Effective Speed
Effective SSD Speed
95.1 % Much faster effective speed.
+46%
65.3 % -46%
Read
Avg. Sequential Read Speed
497 MB/s Slightly faster read speed.
+9%
457 MB/s -9%
Write
Avg. Sequential Write Speed
391 MB/s Much faster write speed.
+60%
244 MB/s -60%
4K Read
Avg. 4K Random Read Speed
38.3 MB/s Much faster random read.
+40%
27.3 MB/s -40%
4K Write
Avg. 4K Random Write Speed
79.3 MB/s Much faster random write.
+56%
50.7 MB/s -56%
Mixed
Avg. Sequential Mixed IO Speed
395 MB/s Much faster mixed IO speed.
+66%
238 MB/s -66%
4K Mixed
Avg. 4K Random Mixed IO Speed
33.1 MB/s Hugely faster random mixed IO.
+128%
14.5 MB/s -128%
Read
Peak Sequential Read Speed
517 MB/s +4% 498 MB/s -4%
Write
Peak Sequential Write Speed
417 MB/s Faster peak write speed.
+22%
341 MB/s -22%
4K Read
Peak 4K Random Read Speed
48.6 MB/s Much faster peak random read.
+33%
36.5 MB/s -33%
4K Write
Peak 4K Random Write Speed
111 MB/s Much faster peak random write.
+34%
82.8 MB/s -34%
Mixed
Peak Sequential Mixed IO Speed
422 MB/s Faster peak mixed IO speed.
+29%
328 MB/s -29%
4K Mixed
Peak 4K Random Mixed IO Speed
48.7 MB/s Hugely faster peak random mixed IO.
+134%
20.8 MB/s -134%
Market Share
Based on 2,595,312 SSDs tested.
Market Share
Market Share (trailing 30 days)
7.7 % Insanely higher market share.
+7,600%
0.1 % -7,600%
Value
Value For Money
87.1 % Much better value.
+32%
65.9 % -32%
User Rating
UBM User Rating
108 % Much more popular.
+71%
63 % -71%
Price
Price (score)
$106 -16% $90 Cheaper.
+16%
Age
Newest
28 Months Slightly more recent.
+10%
31 Months -10%
DQ Read
Peak 4K-64Thread Read Speed
379 MB/s Slightly faster peak deep queue read.
+8%
351 MB/s -8%
DQ Write
Peak 4K-64Thread Write Speed
287 MB/s Much faster peak deep queue write.
+39%
207 MB/s -39%
AS-SSD Total
AS-SSD Total Score
1,178 Pts Stronger server IO.
+19%
990 Pts -19%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
118 MB/s Hugely faster peak deep queue mixed IO.
+132%
50.8 MB/s -132%
ADQ Read
Avg. 4K-64Thread Read Speed
191 MB/s Slightly faster deep queue read.
+7%
178 MB/s -7%
ADQ Write
Avg. 4K-64Thread Write Speed
185 MB/s Much faster deep queue write.
+43%
129 MB/s -43%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
66.6 MB/s Hugely faster deep queue mixed IO.
+127%
29.4 MB/s -127%
Capacity
Capacity
250GB 240GB
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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

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 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 $330Samsung 850 Evo 250GB $106
Intel Core i5-7600K $229AMD RX 480 $217Samsung 850 Pro 256GB $140
Intel Pentium G4560 $60Nvidia GTX 1060-6GB $219Samsung 850 Evo 500GB $170
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $122SanDisk Extreme 64GB $35
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $137SanDisk Ultra Fit 32GB $9
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