SamsungMZ-7PD512BW
SamsungMZ-75E250B

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date ≤ Q4 2013.

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About

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

Real World Speed
Performance profile from 525,474 user samples
6,517 User Benchmarks
Best Bench: 118% 186GB free
Worst Bench: 64% 336GB free (System drive)
Poor: 64% Great: 118%
SPEED RANK: 223rd / 1012
518,957 User Benchmarks
Best Bench: 125% 232GB free
Worst Bench: 76% 232GB free
Poor: 76% Great: 125%
SPEED RANK: 190th / 1012
Effective Speed
Effective SSD Speed
95.8 % 105 % Slightly faster effective speed.
+10%
Read
Avg. Sequential Read Speed
458 MB/s 472 MB/s +3%
Write
Avg. Sequential Write Speed
354 MB/s 441 MB/s Faster write speed.
+25%
4K Read
Avg. 4K Random Read Speed
30.4 MB/s 40.6 MB/s Much faster random read.
+34%
4K Write
Avg. 4K Random Write Speed
83.6 MB/s 98.1 MB/s Faster random write.
+17%
Mixed
Avg. Sequential Mixed IO Speed
320 MB/s 374 MB/s Faster mixed IO speed.
+17%
4K Mixed
Avg. 4K Random Mixed IO Speed
40.7 MB/s 53.9 MB/s Much faster random mixed IO.
+32%
SusWrite
Avg. Sustained Write Speed
324 MB/s Faster sustained write speed.
+29%
252 MB/s
Read
Peak Sequential Read Speed
510 MB/s +1% 507 MB/s
Write
Peak Sequential Write Speed
480 MB/s 493 MB/s +3%
4K Read
Peak 4K Random Read Speed
36.2 MB/s 48.5 MB/s Much faster peak random read.
+34%
4K Write
Peak 4K Random Write Speed
116 MB/s 133 MB/s Slightly faster peak random write.
+15%
Mixed
Peak Sequential Mixed IO Speed
371 MB/s 413 MB/s Slightly faster peak mixed IO speed.
+11%
4K Mixed
Peak 4K Random Mixed IO Speed
49.7 MB/s 65.6 MB/s Much faster peak random mixed IO.
+32%
SusWrite
Peak Sequential Sustained Write 60s Average
482 MB/s Much faster peak sustained write speed.
+47%
327 MB/s
Market Share
Based on 20,106,612 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.03 % 2.37 % Insanely higher market share.
+7,800%
Value
Value For Money
9.3 % 21.3 % Hugely better value.
+129%
User Rating
UBM User Rating
51 % 70 % Much more popular.
+37%
Price
Price (score)
$300 $55 Hugely cheaper.
+82%
Age
Newest
71+ Months 60 Months More recent.
+15%
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s +0% 385 MB/s
DQ Write
Peak 4K-64Thread Write Speed
335 MB/s 361 MB/s Slightly faster peak deep queue write.
+8%
AS-SSD Total
AS-SSD Total Score
1,225 Pts 1,293 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
198 MB/s 369 MB/s Hugely faster peak deep queue mixed IO.
+86%
ADQ Read
Avg. 4K-64Thread Read Speed
335 MB/s +0% 334 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
280 MB/s 305 MB/s Slightly faster deep queue write.
+9%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
163 MB/s 311 MB/s Hugely faster deep queue mixed IO.
+91%
Capacity
Capacity
512GB 250GB
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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

Solid State Drive Rankings (Price vs Performance) December 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 i5-9400F $148Nvidia GTX 1660S (Super) $270Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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