COMPARE
SSD
RANKINGS
TEST
YOUR SSD
ADD TO PC
BUILD
SamsungMZ-77E250B
Adata
▲ 57214 ▼

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

VS
▲ 502 ▼
  

Release date ≈ Q1 2019.

Effective Speed 
+84%
Real World Speed
Performance profile from 25,179 user samples
Benchmark your SSD here
14,082 User Benchmarks
Best Bench: 128% 0GB free
Worst Bench: 67% 59GB free (System drive)
Poor: 67% Great: 128%
SPEED RANK: 251st / 1072
11,097 User Benchmarks
Best Bench: 259% 433GB free (System drive)
Worst Bench: 83% 232GB free (System drive)
Poor: 83% Great: 259%
SPEED RANK: 112th / 1072
Effective Speed
Effective SSD Speed 		101 % 187 % Hugely faster effective speed.
+84%
Average Score 
+103%
Read
Avg. Sequential Read Speed 		461 MB/s 1557 MB/s Hugely faster read speed.
+238%
Write
Avg. Sequential Write Speed 		395 MB/s 1033 MB/s Hugely faster write speed.
+162%
4K Read
Avg. 4K Random Read Speed 		36.4 MB/s +0% 36.3 MB/s
4K Write
Avg. 4K Random Write Speed 		81.9 MB/s 119 MB/s Much faster random write.
+45%
Mixed
Avg. Sequential Mixed IO Speed 		365 MB/s 918 MB/s Hugely faster mixed IO speed.
+152%
4K Mixed
Avg. 4K Random Mixed IO Speed 		45.9 MB/s 48.2 MB/s Slightly faster random mixed IO.
+5%
SusWrite
Avg. Sustained Write Speed 		322 MB/s 713 MB/s Hugely faster sustained write speed.
+121%
Peak Score 
+139%
Read
Peak Sequential Read Speed 		514 MB/s 2020 MB/s Hugely faster peak read speed.
+293%
Write
Peak Sequential Write Speed 		486 MB/s 1402 MB/s Hugely faster peak write speed.
+188%
4K Read
Peak 4K Random Read Speed 		49.1 MB/s +0% 48.9 MB/s
4K Write
Peak 4K Random Write Speed 		123 MB/s 173 MB/s Much faster peak random write.
+41%
Mixed
Peak Sequential Mixed IO Speed 		457 MB/s 1434 MB/s Hugely faster peak mixed IO speed.
+214%
4K Mixed
Peak 4K Random Mixed IO Speed 		66.1 MB/s 69.8 MB/s Slightly faster peak random mixed IO.
+6%
SusWrite
Peak Sequential Sustained Write 60s Average 		396 MB/s 1304 MB/s Hugely faster peak sustained write speed.
+229%
Value & Sentiment 
+64%
Market Share
Based on 75,647,354 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.15 % Hugely higher market share.
+114% 		0.07 %
User Rating
UBM User Rating 		57 % More popular.
+14% 		50 %
Nice To Haves 
+104%
Age
Newest 		38 Months Much more recent.
+39% 		62+ Months
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s 913 MB/s Hugely faster peak deep queue read.
+135%
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s 1058 MB/s Hugely faster peak deep queue write.
+192%
AS-SSD Total
AS-SSD Total Score 		1291 Pts 3,111 Pts Hugely stronger server IO.
+141%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		372 MB/s 879 MB/s Hugely faster peak deep queue mixed IO.
+136%
ADQ Read
Avg. 4K-64Thread Read Speed 		349 MB/s 473 MB/s Much faster deep queue read.
+36%
ADQ Write
Avg. 4K-64Thread Write Speed 		299 MB/s 692 MB/s Hugely faster deep queue write.
+131%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		280 MB/s 554 MB/s Hugely faster deep queue mixed IO.
+98%
Specifications 
Capacity
Capacity 		250GB 512GB
Conclusion 
Average Bench 101%
Average Bench 187%
ADVERTISEMENT

As my first experience with M.2 SSDs it turned out to be quite reliable, running for many years now as a main system disk. The speed might not be on par with top dogs, but I don't think a 1000 MB/s SSD can be seriously considered as a bottleneck for office applications and light gaming. [Aug '23 Electrix]

MORE DETAILS

User Builds 
14,082
11,097
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Solid State Drive Rankings (Price vs Performance) April 2024 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 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 value for money upgrades.

UserBenchmark of the month

Gaming Desktop ProGaming

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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $275Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback