Today's hottest
Amazon Ebay
deals
TEST
YOUR USB

Samsung (ExtHD)

SSD 850 PRO 512G 512GB

▲ 500 ▼

Release date ≈ Q2 2016.

Average Bench: 142% (2nd of 639)

Based on 8 user benchmarks.  Device: VID 174c PID 5106 Model: Samsung SSD 850 PRO 512G
Poor: 30%Average: 142% Great: 192%

Outstanding average bench

The Samsung SSD 850 PRO 512G 512GB averaged 42.4% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 850 PRO 512G 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 35MB/s
Avg. 4K Random Write Speed 23.8MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SSD 850 PRO 512G 512GB is 163%. This is a particularly wide range which indicates that the Samsung SSD 850 PRO 512G 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 253MB/s
Avg. 4K Random Read Speed 17.3MB/s

Average Bench

(Based on 8 samples)
Rank 2142%
Min Avg Max
20.8 Read 253 406
20.8 Write 167 241
20.8 Mixed 192 332
79.4 SusWrite 138 223
242% 187 MB/s
Min Avg Max
6.2 4K Read 17.3 24.2
6.74 4K Write 23.8 42.9
3.64 4K Mixed 17 29.3
1,453% 19.4 MB/s
Min Avg Max
19.6 DQ Read 22.6 26.9
25.7 DQ Write 35 44.4
11.2 DQ Mixed 22.7 33.6
2,044% 26.7 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
315GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 76 79 80 80 80 80 MB/s
192% Outstanding
Read 259
Write 206
Mixed 216
SusWrite 79.4
245% 190 MB/s
4K Read 24.2
4K Write 42.9
4K Mixed 29.3
2,546% 32.1 MB/s
DQ Read 26.9
DQ Write 44.4
DQ Mixed 33.6
2,753% 35 MB/s
153GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 222 193 181 88 60 57 MB/s
173% Outstanding
Read 406
Write 205
Mixed 332
SusWrite 133
337% 269 MB/s
4K Read 22.7
4K Write 25.8
4K Mixed 23.6
1,764% 24 MB/s
DQ Read 24.2
DQ Write 31.3
DQ Mixed 26.4
2,052% 27.3 MB/s
93GB free, PID 5106
Operating at USB 3.0 Speed
172% Outstanding
Read 251
Write 241
Mixed 247
316% 246 MB/s
4K Read 19.6
4K Write 25.5
4K Mixed 10.9
1,312% 18.7 MB/s
DQ Read 19.6
DQ Write 25.7
DQ Mixed 11.2
1,329% 18.9 MB/s
477GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 200 212 229 233 233 233 MB/s
161% Outstanding
Read 235
Write 228
Mixed 217
SusWrite 223
308% 226 MB/s
4K Read 17.4
4K Write 24
4K Mixed 20.1
1,564% 20.5 MB/s
DQ Read 21.5
DQ Write 37.3
DQ Mixed 26.5
2,250% 28.4 MB/s
49GB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 205 170 160 159 158 152 MB/s
152% Outstanding
Read 242
Write 228
Mixed 216
SusWrite 167
286% 213 MB/s
4K Read 17.6
4K Write 24.9
4K Mixed 21.4
1,640% 21.3 MB/s
DQ Read 21.4
DQ Write 37.9
DQ Mixed 26.3
2,263% 28.5 MB/s
337GB free (System drive), PID 5106
Operating at USB 3.0 Speed
142% Outstanding
Read 387
Write 91.1
Mixed 161
220% 213 MB/s
4K Read 15.2
4K Write 20.3
4K Mixed 12.3
1,164% 15.9 MB/s
DQ Read 21.6
DQ Write 32.5
DQ Mixed 12.8
1,619% 22.3 MB/s
50GB free (System drive), PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 153 136 85 83 38 34 MB/s
118% Outstanding
Read 222
Write 116
Mixed 122
SusWrite 88.2
168% 137 MB/s
4K Read 15.9
4K Write 20.5
4K Mixed 14.8
1,260% 17.1 MB/s
DQ Read 22.9
DQ Write 35.8
DQ Mixed 21.8
2,044% 26.8 MB/s
330GB free, PID 5106
Operating at USB 2.1 Speed
34.6% Below average
Read 26.1
Write 24.9
Mixed 25.2
33% 25.4 MB/s
4K Read 7.77
4K Write 7.67
4K Mixed 4.62
447% 6.69 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) October 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: 8 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 $164Nvidia RTX 4060 $299WD Black SN850X M.2 2TB $150
Intel Core i5-12400F $112Nvidia RTX 4060-Ti $380WD Black SN850X M.2 1TB $75
Intel Core i5-13600K $218Nvidia RTX 4070 $500Crucial T700 M.2 4TB $400
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