SamsungMZ-75E250B
AdataASP550SS3-240GM-C

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

Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC. Release date: Q3 2015.

Real World Speed
Performance profile from 666,099 user samples
646,620 User Benchmarks
Best Bench: 124% 140GB free (System drive)
Worst Bench: 74% 95GB free (System drive)
Poor: 74% Great: 124%
SPEED RANK: 211th / 1040
19,479 User Benchmarks
Best Bench: 93% 41GB free (System drive)
Worst Bench: 56% 180GB free (System drive)
Poor: 56% Great: 93%
SPEED RANK: 472nd / 1040
Effective Speed
Effective SSD Speed
104 % Much faster effective speed.
+32%
78.9 %
Read
Avg. Sequential Read Speed
472 MB/s +2% 465 MB/s
Write
Avg. Sequential Write Speed
434 MB/s Faster write speed.
+16%
373 MB/s
4K Read
Avg. 4K Random Read Speed
39.9 MB/s Much faster random read.
+38%
28.9 MB/s
4K Write
Avg. 4K Random Write Speed
96.1 MB/s Faster random write.
+23%
78.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed
370 MB/s Slightly faster mixed IO speed.
+7%
345 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
52.7 MB/s Much faster random mixed IO.
+32%
39.8 MB/s
SusWrite
Avg. Sustained Write Speed
250 MB/s Hugely faster sustained write speed.
+171%
92.1 MB/s
Read
Peak Sequential Read Speed
507 MB/s 509 MB/s +0%
Write
Peak Sequential Write Speed
492 MB/s Slightly faster peak write speed.
+7%
460 MB/s
4K Read
Peak 4K Random Read Speed
48 MB/s Much faster peak random read.
+33%
36.1 MB/s
4K Write
Peak 4K Random Write Speed
127 MB/s Faster peak random write.
+13%
112 MB/s
Mixed
Peak Sequential Mixed IO Speed
416 MB/s +2% 408 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
64.8 MB/s Much faster peak random mixed IO.
+31%
49.5 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
329 MB/s Hugely faster peak sustained write speed.
+176%
119 MB/s
Market Share
Based on 33,129,849 SSDs tested.
Market Share
Market Share (trailing 30 days)
1.82 % Insanely higher market share.
+2,933%
0.06 %
Value
Value For Money
13.5 % Slightly better value.
+9%
12.4 %
User Rating
UBM User Rating
72 % More popular.
+20%
60 %
Price
Price (score)
$100 $74 Cheaper.
+26%
Age
Newest
70 Months 61 Months More recent.
+13%
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s Faster peak deep queue read.
+14%
338 MB/s
DQ Write
Peak 4K-64Thread Write Speed
361 MB/s Slightly faster peak deep queue write.
+6%
340 MB/s
AS-SSD Total
AS-SSD Total Score
1,288 Pts Stronger server IO.
+12%
1,151 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
368 MB/s Much faster peak deep queue mixed IO.
+46%
252 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
347 MB/s Faster deep queue read.
+21%
286 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
306 MB/s Faster deep queue write.
+15%
265 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
315 MB/s Much faster deep queue mixed IO.
+54%
205 MB/s
Capacity
Capacity
250GB 240GB
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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) October 2020 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 i5-9600K $185Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $46
Intel Core i5-9400F $142Nvidia RTX 3080 $700Samsung 850 Evo 120GB $78
Intel Core i5-10600K $260Nvidia GTX 1650S (Super) $170Samsung 860 Evo 250GB $49
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $548SanDisk Extreme 16GB $28
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