SanDiskSDSSDXPS-240G
SamsungMZ-7PD256BW

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

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

Real World Speed
Performance profile from 27,348 user samples
4,107 User Benchmarks
Best Bench: 107% 222GB free
Worst Bench: 66% 46GB free
Poor: 66% Great: 107%
SPEED RANK: 157th / 929
23,241 User Benchmarks
Best Bench: 106% 155GB free
Worst Bench: 56% 46GB free
Poor: 56% Great: 106%
SPEED RANK: 203rd / 929
Effective Speed
Effective SSD Speed
88.2 % Slightly faster effective speed.
+5%
83.9 %
Read
Avg. Sequential Read Speed
493 MB/s +0% 492 MB/s
Write
Avg. Sequential Write Speed
432 MB/s Faster write speed.
+17%
368 MB/s
4K Read
Avg. 4K Random Read Speed
28.7 MB/s +1% 28.3 MB/s
4K Write
Avg. 4K Random Write Speed
77.5 MB/s 77.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
434 MB/s Slightly faster mixed IO speed.
+9%
397 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
22.2 MB/s 22.2 MB/s
Read
Peak Sequential Read Speed
517 MB/s 523 MB/s +1%
Write
Peak Sequential Write Speed
496 MB/s 497 MB/s +0%
4K Read
Peak 4K Random Read Speed
35.7 MB/s 35.7 MB/s
4K Write
Peak 4K Random Write Speed
112 MB/s +1% 111 MB/s
Mixed
Peak Sequential Mixed IO Speed
488 MB/s 510 MB/s +5%
4K Mixed
Peak 4K Random Mixed IO Speed
30 MB/s +5% 28.6 MB/s
Market Share
Based on 7,168,882 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.05 % 0.35 % Hugely higher market share.
+600%
Value
Value For Money
79.2 % Hugely better value.
+115%
36.9 %
User Rating
UBM User Rating
64 % +2% 63 %
Price
Price (score)
$105 Much cheaper.
+64%
$290
Age
Newest
48 Months More recent.
+29%
68 Months
DQ Read
Peak 4K-64Thread Read Speed
364 MB/s 365 MB/s +0%
DQ Write
Peak 4K-64Thread Write Speed
322 MB/s 325 MB/s +1%
AS-SSD Total
AS-SSD Total Score
1,178 Pts 1,182 Pts +0%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.5 MB/s 90.4 MB/s Much faster peak deep queue mixed IO.
+38%
ADQ Read
Avg. 4K-64Thread Read Speed
183 MB/s 190 MB/s +4%
ADQ Write
Avg. 4K-64Thread Write Speed
205 MB/s Slightly faster deep queue write.
+7%
191 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
44.4 MB/s 53 MB/s Faster deep queue mixed IO.
+19%
Capacity
Capacity
240GB 256GB
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The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

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

Solid State Drive Rankings (Price vs Performance) June 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
AMD Ryzen 5 1600 $170Nvidia GTX 1070 $440Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $122
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $121
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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