SamsungMZ-75E250B
SanDiskSDSSDHII-240G-G25

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC. Release date: Q3 2014.

Real World Speed
Performance profile from 313,163 user samples
297,917 User Benchmarks
Best Bench: 124% 138GB free
Worst Bench: 73% 22GB free (System drive)
Poor: 73% Great: 124%
SPEED RANK: 142nd / 956
15,246 User Benchmarks
Best Bench: 101% 223GB free
Worst Bench: 57% 71GB free (System drive)
Poor: 57% Great: 101%
SPEED RANK: 299th / 956
Effective Speed
Effective SSD Speed
105 % Faster effective speed.
+28%
82 %
Read
Avg. Sequential Read Speed
468 MB/s +4% 449 MB/s
Write
Avg. Sequential Write Speed
437 MB/s Faster write speed.
+21%
361 MB/s
4K Read
Avg. 4K Random Read Speed
40.1 MB/s Much faster random read.
+36%
29.5 MB/s
4K Write
Avg. 4K Random Write Speed
99.4 MB/s Faster random write.
+26%
78.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed
370 MB/s Much faster mixed IO speed.
+50%
246 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.3 MB/s Much faster random mixed IO.
+47%
36.2 MB/s
SusWrite
Avg. Sustained Write Speed
248 MB/s Much faster sustained write speed.
+41%
176 MB/s
Read
Peak Sequential Read Speed
507 MB/s +1% 500 MB/s
Write
Peak Sequential Write Speed
491 MB/s +4% 472 MB/s
4K Read
Peak 4K Random Read Speed
48.2 MB/s Faster peak random read.
+24%
38.8 MB/s
4K Write
Peak 4K Random Write Speed
132 MB/s Slightly faster peak random write.
+9%
121 MB/s
Mixed
Peak Sequential Mixed IO Speed
413 MB/s Faster peak mixed IO speed.
+21%
340 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
65.3 MB/s Much faster peak random mixed IO.
+34%
48.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
324 MB/s Much faster peak sustained write speed.
+38%
234 MB/s
Market Share
Based on 8,554,617 SSDs tested.
Market Share
Market Share (trailing 30 days)
4.71 % Insanely higher market share.
+1,327%
0.33 %
Value
Value For Money
114 % Slightly better value.
+14%
99.8 %
User Rating
UBM User Rating
126 % Hugely more popular.
+97%
64 %
Price
Price (score)
$85 $70 Cheaper.
+18%
Age
Newest
45 Months Slightly more recent.
+6%
48 Months
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s 390 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed
354 MB/s Slightly faster peak deep queue write.
+14%
310 MB/s
AS-SSD Total
AS-SSD Total Score
1,286 Pts Slightly stronger server IO.
+6%
1,214 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
365 MB/s Much faster peak deep queue mixed IO.
+44%
254 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
344 MB/s Slightly faster deep queue read.
+9%
316 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
313 MB/s Faster deep queue write.
+29%
243 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
317 MB/s Much faster deep queue mixed IO.
+58%
200 MB/s
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]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) September 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $344Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $110
Intel Core i5-8600K $245AMD RX 480 $280Samsung 850 Pro 256GB $134
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $150SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $899SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $160SanDisk Ultra Fit 32GB $11
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