SamsungMZ-7PD256BW
SanDiskSDSSDXPS-240G

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

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Real World Speed
Performance profile from 27,723 user samples
22,850 User Benchmarks
Best Bench: 116% 39GB free
Worst Bench: 60% 91GB free (System drive)
Poor: 60% Great: 116%
SPEED RANK: 188th / 964
4,873 User Benchmarks
Best Bench: 115% 82GB free (System drive)
Worst Bench: 58% 38GB free (System drive)
Poor: 58% Great: 115%
SPEED RANK: 194th / 964
Effective Speed
Effective SSD Speed
92.5 % +1% 91.4 %
Read
Avg. Sequential Read Speed
457 MB/s +0% 455 MB/s
Write
Avg. Sequential Write Speed
360 MB/s 406 MB/s Slightly faster write speed.
+13%
4K Read
Avg. 4K Random Read Speed
30.6 MB/s Slightly faster random read.
+9%
28.1 MB/s
4K Write
Avg. 4K Random Write Speed
86.1 MB/s Slightly faster random write.
+14%
75.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed
290 MB/s Slightly faster mixed IO speed.
+12%
259 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
38.7 MB/s Faster random mixed IO.
+17%
33.2 MB/s
SusWrite
Avg. Sustained Write Speed
285 MB/s 358 MB/s Faster sustained write speed.
+26%
Read
Peak Sequential Read Speed
510 MB/s 512 MB/s +0%
Write
Peak Sequential Write Speed
484 MB/s +1% 481 MB/s
4K Read
Peak 4K Random Read Speed
36.6 MB/s 36.6 MB/s
4K Write
Peak 4K Random Write Speed
120 MB/s +2% 118 MB/s
Mixed
Peak Sequential Mixed IO Speed
362 MB/s Faster peak mixed IO speed.
+15%
314 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
48 MB/s Slightly faster peak random mixed IO.
+9%
43.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
478 MB/s +1% 473 MB/s
Market Share
Based on 9,661,111 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.4 % Hugely higher market share.
+300%
0.1 %
Value
Value For Money
40.8 % 102 % Hugely better value.
+149%
User Rating
UBM User Rating
63 % 64 % +2%
Price
Price (score)
$289 $79 Much cheaper.
+73%
Age
Newest
73 Months 53 Months More recent.
+27%
DQ Read
Peak 4K-64Thread Read Speed
385 MB/s +2% 379 MB/s
DQ Write
Peak 4K-64Thread Write Speed
335 MB/s 340 MB/s +1%
AS-SSD Total
AS-SSD Total Score
1,229 Pts +1% 1,223 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
175 MB/s Slightly faster peak deep queue mixed IO.
+5%
166 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
338 MB/s Slightly faster deep queue read.
+9%
309 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
260 MB/s 276 MB/s Slightly faster deep queue write.
+6%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
140 MB/s 143 MB/s +2%
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 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

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]

ADVERTISEMENT

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 $340Samsung 850 Evo 250GB $80
AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $235Samsung 850 Evo 500GB $97
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
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback