SamsungMZ-75E250B
SamsungMZ-7PD256BW

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

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

Real World Speed
Performance profile from 394,145 user samples
366,179 User Benchmarks
Best Bench: 125% 165GB free (System drive)
Worst Bench: 70% 233GB free
Poor: 70% Great: 125%
SPEED RANK: 159th / 980
27,966 User Benchmarks
Best Bench: 117% 238GB free
Worst Bench: 64% 170GB free (System drive)
Poor: 64% Great: 117%
SPEED RANK: 204th / 980
Effective Speed
Effective SSD Speed
105 % Slightly faster effective speed.
+13%
92.4 %
Read
Avg. Sequential Read Speed
470 MB/s +4% 454 MB/s
Write
Avg. Sequential Write Speed
439 MB/s Faster write speed.
+22%
359 MB/s
4K Read
Avg. 4K Random Read Speed
39.8 MB/s Much faster random read.
+30%
30.5 MB/s
4K Write
Avg. 4K Random Write Speed
98.5 MB/s Slightly faster random write.
+15%
85.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
369 MB/s Faster mixed IO speed.
+27%
291 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.2 MB/s Much faster random mixed IO.
+37%
38.7 MB/s
SusWrite
Avg. Sustained Write Speed
248 MB/s 289 MB/s Faster sustained write speed.
+17%
Read
Peak Sequential Read Speed
508 MB/s 510 MB/s +0%
Write
Peak Sequential Write Speed
493 MB/s +3% 480 MB/s
4K Read
Peak 4K Random Read Speed
48.7 MB/s Much faster peak random read.
+33%
36.7 MB/s
4K Write
Peak 4K Random Write Speed
136 MB/s Slightly faster peak random write.
+13%
120 MB/s
Mixed
Peak Sequential Mixed IO Speed
415 MB/s Faster peak mixed IO speed.
+16%
359 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
66.4 MB/s Much faster peak random mixed IO.
+39%
47.8 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
327 MB/s 475 MB/s Much faster peak sustained write speed.
+45%
Market Share
Based on 11,464,199 SSDs tested.
Market Share
Market Share (trailing 30 days)
3.92 % Insanely higher market share.
+1,408%
0.26 %
Value
Value For Money
131 % Much better value.
+67%
78.9 %
User Rating
UBM User Rating
126 % Hugely more popular.
+100%
63 %
Price
Price (score)
$70 Much cheaper.
+42%
$120
Age
Newest
49 Months Much more recent.
+35%
75 Months
DQ Read
Peak 4K-64Thread Read Speed
387 MB/s +1% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
360 MB/s Slightly faster peak deep queue write.
+9%
331 MB/s
AS-SSD Total
AS-SSD Total Score
1,299 Pts Slightly stronger server IO.
+6%
1,225 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
368 MB/s Hugely faster peak deep queue mixed IO.
+110%
175 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
342 MB/s +3% 332 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
311 MB/s Faster deep queue write.
+20%
259 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
317 MB/s Hugely faster deep queue mixed IO.
+128%
139 MB/s
Capacity
Capacity
250GB 256GB
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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

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) January 2019 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 $360Nvidia GTX 1070 $320Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $110
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $780SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $125SanDisk Extreme 16GB $22
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