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 312,932 user samples
15,762 User Benchmarks
Best Bench: 83% 58GB free
Worst Bench: 46% 46GB free
Poor: 46% Great: 83%
SPEED RANK: 492nd / 927
297,170 User Benchmarks
Best Bench: 113% 169GB free
Worst Bench: 70% 188GB free
Poor: 70% Great: 113%
SPEED RANK: 116th / 927
Effective Speed
Effective SSD Speed
65.2 % 94.6 % Much faster effective speed.
+45%
Read
Avg. Sequential Read Speed
455 MB/s 499 MB/s Slightly faster read speed.
+10%
Write
Avg. Sequential Write Speed
250 MB/s 394 MB/s Much faster write speed.
+58%
4K Read
Avg. 4K Random Read Speed
27 MB/s 37.8 MB/s Much faster random read.
+40%
4K Write
Avg. 4K Random Write Speed
49.6 MB/s 76.9 MB/s Much faster random write.
+55%
Mixed
Avg. Sequential Mixed IO Speed
243 MB/s 400 MB/s Much faster mixed IO speed.
+65%
4K Mixed
Avg. 4K Random Mixed IO Speed
14.6 MB/s 32.9 MB/s Hugely faster random mixed IO.
+125%
Read
Peak Sequential Read Speed
499 MB/s 517 MB/s +4%
Write
Peak Sequential Write Speed
343 MB/s 417 MB/s Faster peak write speed.
+22%
4K Read
Peak 4K Random Read Speed
36.7 MB/s 46.1 MB/s Faster peak random read.
+26%
4K Write
Peak 4K Random Write Speed
76.7 MB/s 103 MB/s Much faster peak random write.
+34%
Mixed
Peak Sequential Mixed IO Speed
328 MB/s 422 MB/s Faster peak mixed IO speed.
+29%
4K Mixed
Peak 4K Random Mixed IO Speed
20.6 MB/s 47.4 MB/s Hugely faster peak random mixed IO.
+130%
Market Share
Based on 6,826,064 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.43 % 6.16 % Insanely higher market share.
+1,333%
Value
Value For Money
79.4 % 94.4 % Better value.
+19%
User Rating
UBM User Rating
65 % 127 % Hugely more popular.
+95%
Price
Price (score)
$70 Cheaper.
+26%
$95
Age
Newest
44 Months 41 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed
345 MB/s 369 MB/s Slightly faster peak deep queue read.
+7%
DQ Write
Peak 4K-64Thread Write Speed
206 MB/s 279 MB/s Much faster peak deep queue write.
+35%
AS-SSD Total
AS-SSD Total Score
975 Pts 1,142 Pts Stronger server IO.
+17%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
50.8 MB/s 119 MB/s Hugely faster peak deep queue mixed IO.
+134%
ADQ Read
Avg. 4K-64Thread Read Speed
173 MB/s 192 MB/s Slightly faster deep queue read.
+11%
ADQ Write
Avg. 4K-64Thread Write Speed
130 MB/s 181 MB/s Much faster deep queue write.
+39%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
30.4 MB/s 67.9 MB/s Hugely faster deep queue mixed IO.
+123%
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) May 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 $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $172Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $136
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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