SamsungMZ-77E4T0B
SamsungMZ-75E250B

Controller: Samsung MKX. Memory: Samsung 128 layer TLC V-NAND. Release date ≈ Q1 2021.

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

Real World Speed
Performance profile from 828,081 user samples
531 User Benchmarks
Best Bench: 137% 3.5TB free
Worst Bench: 92% 3.5TB free
Poor: 92% Great: 137%
SPEED RANK: 182nd / 1058
827,550 User Benchmarks
Best Bench: 123% 53GB free
Worst Bench: 73% 64GB free (System drive)
Poor: 73% Great: 123%
SPEED RANK: 229th / 1058
Effective Speed
Effective SSD Speed
117 % Faster effective speed.
+14%
103 %
Read
Avg. Sequential Read Speed
490 MB/s +4% 471 MB/s
Write
Avg. Sequential Write Speed
448 MB/s +5% 428 MB/s
4K Read
Avg. 4K Random Read Speed
42.5 MB/s Slightly faster random read.
+8%
39.5 MB/s
4K Write
Avg. 4K Random Write Speed
92.6 MB/s 93 MB/s +0%
Mixed
Avg. Sequential Mixed IO Speed
428 MB/s Faster mixed IO speed.
+15%
371 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
56.2 MB/s Slightly faster random mixed IO.
+8%
51.8 MB/s
SusWrite
Avg. Sustained Write Speed
445 MB/s Hugely faster sustained write speed.
+81%
246 MB/s
Read
Peak Sequential Read Speed
517 MB/s +2% 507 MB/s
Write
Peak Sequential Write Speed
493 MB/s +1% 490 MB/s
4K Read
Peak 4K Random Read Speed
49.2 MB/s +4% 47.5 MB/s
4K Write
Peak 4K Random Write Speed
125 MB/s +1% 124 MB/s
Mixed
Peak Sequential Mixed IO Speed
462 MB/s Faster peak mixed IO speed.
+11%
416 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
68.1 MB/s Slightly faster peak random mixed IO.
+6%
64.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
493 MB/s Much faster peak sustained write speed.
+51%
327 MB/s
Market Share
Based on 47,200,274 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.01 % 1.19 % Insanely higher market share.
+11,800%
Value
Value For Money
34.8 % Hugely better value.
+162%
13.3 %
User Rating
UBM User Rating
50 % 55 % Slightly more popular.
+10%
Price
Price (score)
$529 $100 Hugely cheaper.
+81%
Age
Newest
7+ Months Hugely more recent.
+91%
81 Months
DQ Read
Peak 4K-64Thread Read Speed
388 MB/s +1% 386 MB/s
DQ Write
Peak 4K-64Thread Write Speed
362 MB/s 362 MB/s
AS-SSD Total
AS-SSD Total Score
1,293 Pts +1% 1,284 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
373 MB/s +1% 369 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
308 MB/s 344 MB/s Faster deep queue read.
+12%
ADQ Write
Avg. 4K-64Thread Write Speed
265 MB/s 297 MB/s Faster deep queue write.
+12%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
280 MB/s 310 MB/s Faster deep queue mixed IO.
+11%
Capacity
Capacity
4TB 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) September 2021 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $72G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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