SamsungMZ-7PD256BW
SanDiskSDSSDHII-240G-G25

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

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

Real World Speed
Performance profile from 39,785 user samples
22,850 User Benchmarks
Best Bench: 116% 39GB free
Worst Bench: 60% 91GB free (System drive)
Poor: 60% Great: 116%
SPEED RANK: 187th / 964
16,935 User Benchmarks
Best Bench: 101% 70GB free (System drive)
Worst Bench: 55% 164GB free (System drive)
Poor: 55% Great: 101%
SPEED RANK: 351st / 964
Effective Speed
Effective SSD Speed
92.5 % Faster effective speed.
+16%
79.8 %
Read
Avg. Sequential Read Speed
457 MB/s +3% 443 MB/s
Write
Avg. Sequential Write Speed
360 MB/s +0% 359 MB/s
4K Read
Avg. 4K Random Read Speed
30.6 MB/s Slightly faster random read.
+6%
29 MB/s
4K Write
Avg. 4K Random Write Speed
86.1 MB/s Faster random write.
+16%
74.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed
290 MB/s Faster mixed IO speed.
+18%
245 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
38.7 MB/s Slightly faster random mixed IO.
+10%
35.3 MB/s
SusWrite
Avg. Sustained Write Speed
285 MB/s Much faster sustained write speed.
+65%
173 MB/s
Read
Peak Sequential Read Speed
510 MB/s +2% 500 MB/s
Write
Peak Sequential Write Speed
484 MB/s +4% 467 MB/s
4K Read
Peak 4K Random Read Speed
36.6 MB/s 38.3 MB/s +5%
4K Write
Peak 4K Random Write Speed
120 MB/s +2% 118 MB/s
Mixed
Peak Sequential Mixed IO Speed
362 MB/s Slightly faster peak mixed IO speed.
+8%
335 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
48 MB/s 48 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
478 MB/s Hugely faster peak sustained write speed.
+96%
244 MB/s
Market Share
Based on 9,629,291 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.42 % Much higher market share.
+31%
0.32 %
Value
Value For Money
42 % 97.2 % Hugely better value.
+131%
User Rating
UBM User Rating
63 % 63 %
Price
Price (score)
$278 $70 Much cheaper.
+75%
Age
Newest
73 Months 50 Months Much more recent.
+32%
DQ Read
Peak 4K-64Thread Read Speed
385 MB/s 389 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed
335 MB/s Slightly faster peak deep queue write.
+8%
309 MB/s
AS-SSD Total
AS-SSD Total Score
1,229 Pts +2% 1,207 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
175 MB/s 253 MB/s Much faster peak deep queue mixed IO.
+45%
ADQ Read
Avg. 4K-64Thread Read Speed
338 MB/s Slightly faster deep queue read.
+11%
305 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
260 MB/s Slightly faster deep queue write.
+11%
235 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
140 MB/s 195 MB/s Much faster deep queue mixed IO.
+39%
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) November 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 $359Nvidia GTX 1070 $330Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $245Samsung 850 Evo 500GB $102
Intel Core i5-8600K $237AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
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