TEST
YOUR USB

Samsung (ExtHD)

SSD 840 Series 250GB

▲ 500 ▼

Release date ≈ Q3 2016.

Average Bench: 173% (1st of 639)

Based on 16 user benchmarks.  Device: VID 174c PID 55aa Model: Samsung SSD 840 Series
Poor: 108%Average: 173% Great: 323%

Outstanding average bench

The Samsung SSD 840 Series 250GB averaged 73.1% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung SSD 840 Series 250GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 42.5MB/s
Avg. 4K Random Write Speed 32MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Samsung SSD 840 Series 250GB is 215%. This is a particularly wide range which indicates that the Samsung SSD 840 Series 250GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 254MB/s
Avg. 4K Random Read Speed 16.5MB/s
ADVERTISEMENT

Average Bench

(Based on 16 samples)
Rank 1173%
Min Avg Max
20.7 Read 254 436
18.7 Write 154 252
19.5 Mixed 128 222
71.3 SusWrite 179 238
227% 179 MB/s
Min Avg Max
4.67 4K Read 16.5 25.7
4.55 4K Write 32 68.5
2.55 4K Mixed 11.3 21.2
1,533% 19.9 MB/s
Min Avg Max
14.2 DQ Read 19.9 27.5
27.1 DQ Write 42.5 85.9
5.91 DQ Mixed 13.8 22.6
1,987% 25.4 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
169GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 201 237 244 244 244 244 MB/s
281% Outstanding
Read 308
Write 250
Mixed 159
SusWrite 235
310% 238 MB/s
4K Read 24.4
4K Write 58.4
4K Mixed 21.1
2,795% 34.6 MB/s
DQ Read 24.3
DQ Write 73.9
DQ Mixed 22.9
3,383% 40.4 MB/s
121GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 160 140 177 175 162 164 MB/s
168% Outstanding
Read 324
Write 252
Mixed 151
SusWrite 163
281% 222 MB/s
4K Read 14
4K Write 26.8
4K Mixed 10
1,304% 16.9 MB/s
DQ Read 20.9
DQ Write 48.5
DQ Mixed 14.1
2,207% 27.8 MB/s
54GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 230 238 240 238 238 242 MB/s
145% Outstanding
Read 292
Write 225
Mixed 145
SusWrite 238
293% 225 MB/s
4K Read 11.2
4K Write 15.7
4K Mixed 11.6
970% 12.8 MB/s
DQ Read 18
DQ Write 28.1
DQ Mixed 17.5
1,618% 21.2 MB/s
54GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 226 222 246 220 242 217 MB/s
143% Outstanding
Read 276
Write 216
Mixed 134
SusWrite 229
278% 214 MB/s
4K Read 11.8
4K Write 16.5
4K Mixed 12
1,013% 13.4 MB/s
DQ Read 18
DQ Write 28.1
DQ Mixed 17.3
1,611% 21.1 MB/s
121GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 175 177 178 178 171 179 MB/s
141% Outstanding
Read 306
Write 249
Mixed 150
SusWrite 176
282% 220 MB/s
4K Read 12.8
4K Write 17.8
4K Mixed 9.4
973% 13.3 MB/s
DQ Read 16
DQ Write 27.4
DQ Mixed 11.9
1,396% 18.4 MB/s
16 MORE »
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) April 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]

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.

 Comments

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 7 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 Corsair Flash Voyager GT 32GB
vs Lexar JumpDrive P20 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
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia 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