Today's hottest
Amazon Ebay
deals
TEST
YOUR USB

Samsung (ExtHD)

SSD 850 PRO 256G 256GB

▲ 500 ▼

Release date ≈ Q3 2018.

Average Bench: 173% (1st of 639)

Based on 5 user benchmarks.  Device: VID 152d PID 0567 Model: Samsung SSD 850 PRO 256G
Poor: 143%Average: 173% Great: 271%

Outstanding average bench

The Samsung SSD 850 PRO 256G 256GB averaged 73.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 850 PRO 256G 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 38.8MB/s
Avg. 4K-64Thread Mixed IO Speed 25.1MB/s

Unknown consistency

There are too few samples to reasonably determine how consistently this USB perfroms. This result should be interpreted with caution.

Weaknesses

Avg. 4K Random Read Speed 19.2MB/s
Avg. Sequential Read Speed 325MB/s

Average Bench

(Based on 5 samples)
Rank 1173%
Min Avg Max
263 Read 325 392
137 Write 264 406
220 Mixed 257 323
51.4 SusWrite 205 407
346% 263 MB/s
Min Avg Max
16 4K Read 19.2 21.6
17.8 4K Write 25 39.1
17.9 4K Mixed 21.2 27.3
1,643% 21.8 MB/s
Min Avg Max
22.4 DQ Read 23.4 24.4
28.2 DQ Write 38.8 55.2
21.4 DQ Mixed 25.1 31.4
2,259% 29.1 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
194GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 405 407 407 405 407 407 MB/s
271% Outstanding
Read 392
Write 406
Mixed 323
SusWrite 407
522% 382 MB/s
4K Read 21.6
4K Write 39.1
4K Mixed 27.3
2,339% 29.3 MB/s
DQ Read 23.7
DQ Write 55.2
DQ Mixed 31.4
3,034% 36.8 MB/s
142GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 219 238 235 221 212 224 MB/s
146% Outstanding
Read 263
Write 229
Mixed 220
SusWrite 225
314% 234 MB/s
4K Read 19.8
4K Write 17.8
4K Mixed 19
1,325% 18.9 MB/s
DQ Read 24.4
DQ Write 42
DQ Mixed 21.4
2,247% 29.3 MB/s
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
How Fast Is Your USB? (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
USB Flash Drive Rankings (Price vs Performance) September 2024 USB Rankings

We highlight the best USB flash drive in terms of balanced performance and value for money using current prices, sequential read, sequential write , 4k read and 4k write speed. The speeds are combined to form a single effective speed which measures performance for tasks such as copying photos, music and videos. Effective speed is adjusted by current price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. [USBFlashPro]

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.

 Comments

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 6 years

Speed Comparisons

vs SanDisk Extreme 64GB
vs SanDisk Extreme 32GB
vs SanDisk Ultra Fit 32GB
vs SanDisk Extreme 16GB
vs Lexar JumpDrive P20 64GB
vs Adata DashDrive UV128 32GB
vs SanDisk Ultra Fit 16GB
vs Verbatim Store n Go V3 16GB
vs Corsair Flash Voyager GT 32GB

639 Drives (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different USBs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 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?
USB Flash Drives
How do you install an OS from a USB flash drive?
What is the Flash Drive value for money rating?
What is effective USB Flash Drive speed?
Why should USB 2.0 Flash Drives be avoided?
File system considerations?
Do dimensions matter?
What are the main factors to look out for?
16GB USB Flash Drives
Why is bigger better?
ALL FAQs »

 Best User Rated
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $170Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $123
Intel Core i5-12400F $112Nvidia RTX 4060-Ti $375WD Black SN850X M.2 1TB $75
Intel Core i5-13600K $253Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback