SamsungMZ-7PD256BW
SanDiskSDSSDHII-240G-G25

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC.

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

Real World Speed
Performance profile from 36,984 user samples
22,797 User Benchmarks
Best Bench: 117% 88GB free (System drive)
Worst Bench: 62% 123GB free (System drive)
Poor: 62% Great: 117%
SPEED RANK: 162nd / 955
14,187 User Benchmarks
Best Bench: 103% 223GB free
Worst Bench: 56% 21GB free (System drive)
Poor: 56% Great: 103%
SPEED RANK: 257th / 955
Effective Speed
Effective SSD Speed
92 % Slightly faster effective speed.
+11%
82.8 %
Read
Avg. Sequential Read Speed
454 MB/s +0% 452 MB/s
Write
Avg. Sequential Write Speed
355 MB/s 375 MB/s Slightly faster write speed.
+6%
4K Read
Avg. 4K Random Read Speed
30.5 MB/s +2% 29.9 MB/s
4K Write
Avg. 4K Random Write Speed
84.7 MB/s Slightly faster random write.
+6%
79.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed
290 MB/s Faster mixed IO speed.
+16%
250 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
38.3 MB/s +5% 36.5 MB/s
SusWrite
Avg. Sustained Write Speed
287 MB/s Much faster sustained write speed.
+61%
178 MB/s
Read
Peak Sequential Read Speed
510 MB/s +2% 502 MB/s
Write
Peak Sequential Write Speed
482 MB/s +2% 474 MB/s
4K Read
Peak 4K Random Read Speed
36.8 MB/s 39.9 MB/s Slightly faster peak random read.
+8%
4K Write
Peak 4K Random Write Speed
119 MB/s 119 MB/s
Mixed
Peak Sequential Mixed IO Speed
358 MB/s +3% 347 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
48 MB/s 51.2 MB/s Slightly faster peak random mixed IO.
+7%
SusWrite
Peak Sequential Sustained Write 60s Average
473 MB/s Hugely faster peak sustained write speed.
+101%
235 MB/s
Market Share
Based on 7,584,854 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.3 % 0.33 % Slightly higher market share.
+10%
Value
Value For Money
40.5 % 101 % Hugely better value.
+149%
User Rating
UBM User Rating
63 % 64 % +2%
Price
Price (score)
$289 $70 Much cheaper.
+76%
Age
Newest
69 Months 46 Months Much more recent.
+33%
DQ Read
Peak 4K-64Thread Read Speed
385 MB/s 389 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed
328 MB/s Slightly faster peak deep queue write.
+5%
311 MB/s
AS-SSD Total
AS-SSD Total Score
1,221 Pts +1% 1,215 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
174 MB/s 253 MB/s Much faster peak deep queue mixed IO.
+45%
ADQ Read
Avg. 4K-64Thread Read Speed
334 MB/s +5% 319 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
260 MB/s Slightly faster deep queue write.
+6%
246 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
138 MB/s 200 MB/s Much faster deep queue mixed IO.
+45%
Capacity
Capacity
256GB 240GB
ADVERTISEMENT

The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 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) July 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 $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $121
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $136
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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