TEST
YOUR USB

Lexar (ExtHD)

SFF-SSD 512GB

▲ 500 ▼

Release date ≈ Q1 2017.

Average Bench: 244% (1st of 639)

Based on 19 user benchmarks.  Device: VID 05dc PID ba12 Model: Lexar SFF-SSD
Poor: 141%Average: 244% Great: 423%

Outstanding average bench

The Lexar SFF-SSD 512GB averaged 143.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Lexar SFF-SSD 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 60.8MB/s
Avg. 4K Random Write Speed 46MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Lexar SFF-SSD 512GB is 282%. This is a particularly wide range which indicates that the Lexar SFF-SSD 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 15.5MB/s
Avg. 4K-64Thread Read Speed 17.5MB/s
ADVERTISEMENT

Average Bench

(Based on 19 samples)
Rank 1244%
Min Avg Max
0.8 Read 335 502
0.7 Write 277 435
0.8 Mixed 262 429
0.9 SusWrite 146 367
331% 255 MB/s
Min Avg Max
0.4 4K Read 15.5 20.8
0.4 4K Write 46 84.8
0.4 4K Mixed 15.4 30.2
2,144% 25.6 MB/s
Min Avg Max
12.5 DQ Read 17.5 20.7
25.1 DQ Write 60.8 99.9
8.3 DQ Mixed 17.9 32.3
2,742% 32.1 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
174GB free, PID ba12
Operating at USB 3.1 Speed
SusWrite @10s intervals: 391 362 403 413 420 216 MB/s
373% Outstanding
Read 493
Write 413
Mixed 312
SusWrite 367
521% 396 MB/s
4K Read 18.1
4K Write 70.8
4K Mixed 28.1
3,431% 39 MB/s
DQ Read 19.5
DQ Write 88.7
DQ Mixed 31
4,144% 46.4 MB/s
174GB free, PID ba12
Operating at USB 3.1 Speed
SusWrite @10s intervals: 203 108 108 108 48 75 MB/s
316% Outstanding
Read 504
Write 432
Mixed 333
SusWrite 108
435% 344 MB/s
4K Read 18.7
4K Write 69.8
4K Mixed 29.1
3,433% 39.2 MB/s
DQ Read 19.5
DQ Write 91.3
DQ Mixed 33.1
4,304% 48 MB/s
477GB free, PID ba12
SusWrite @10s intervals: 115 110 106 105 107 107 MB/s
168% Outstanding
Read 248
Write 224
Mixed 199
SusWrite 108
254% 195 MB/s
4K Read 14.8
4K Write 34
4K Mixed 20.1
1,895% 23 MB/s
DQ Read 17.1
DQ Write 53.3
DQ Mixed 20.3
2,567% 30.2 MB/s
41GB free, PID ba12
Operating at USB 3.1 Speed
SusWrite @10s intervals: 153 130 82 57 146 65 MB/s
147% Outstanding
Read 307
Write 215
Mixed 217
SusWrite 106
267% 211 MB/s
4K Read 14.5
4K Write 24.6
4K Mixed 17.8
1,496% 19 MB/s
DQ Read 15.1
DQ Write 25.1
DQ Mixed 18.7
1,546% 19.6 MB/s
388GB free, PID ba12
Operating at USB 3.1 Speed
SusWrite @10s intervals: 97 96 115 115 115 116 MB/s
144% Outstanding
Read 304
Write 210
Mixed 226
SusWrite 109
270% 212 MB/s
4K Read 14
4K Write 23.8
4K Mixed 17.3
1,450% 18.4 MB/s
DQ Read 16
DQ Write 36.5
DQ Mixed 21.8
2,042% 24.8 MB/s
41GB free, PID ba12
Operating at USB 3.1 Speed
SusWrite @10s intervals: 119 115 109 57 119 60 MB/s
141% Outstanding
Read 304
Write 201
Mixed 228
SusWrite 96.6
262% 207 MB/s
4K Read 14
4K Write 23.7
4K Mixed 17.8
1,464% 18.5 MB/s
DQ Read 16
DQ Write 36.3
DQ Mixed 21.7
2,032% 24.7 MB/s
388GB free, PID ba12
Operating at USB 2.1 Speed
SusWrite @10s intervals: 0.9 1 0.9 1 0.9 1 MB/s
1.64% Terrible
Read 0.8
Write 0.7
Mixed 0.8
SusWrite 0.9
1% 0.8 MB/s
4K Read 0.4
4K Write 0.4
4K Mixed 0.4
29% 0.4 MB/s
19 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) May 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 Verbatim Store n Go V3 16GB

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 $254Nvidia RTX 4060 $293Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $175Nvidia RTX 4070 $550Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $45SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $62G.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