Average Bench: 48.5% (24th of 639)

Based on 20 user benchmarks.  Device: VID 0781 PID cfc5 Model: SanDisk SDDR-339
Poor: 16%Average: 48.5% Great: 59%

Below average average bench

The SanDisk SDDR-339 128GB averaged 51.5% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. 4K Random Mixed IO Speed 1.83MB/s
Avg. Sustained Write Speed 95.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk SDDR-339 128GB is 43.9%. This is a relatively wide range which indicates that the SanDisk SDDR-339 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 37.3MB/s
Avg. Sequential Write Speed 49.5MB/s
ADVERTISEMENT

Average Bench

(Based on 20 samples)
Min Avg Max
40.1 Read 161 232
11.7 Write 49.5 99.5
18.5 Mixed 37.3 55.8
15.7 SusWrite 95.3 114
99.7% 85.7 MB/s
Min Avg Max
4.7 4K Read 10.9 13.2
0.1 4K Write 1.16 1.8
0.4 4K Mixed 1.83 3.6
142% 4.64 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
120GB free, PID cfc5
Operating at USB 3.1 Speed
SusWrite @10s intervals: 110 113 111 114 108 114 MB/s
Read 170
Write 42.2
Mixed 32.5
SusWrite 112
103% 89.1 MB/s
4K Read 12.9
4K Write 1.2
4K Mixed 1.2
129% 5.1 MB/s
119GB free, PID cfc5
Operating at USB 3.1 Speed
SusWrite @10s intervals: 99 96 105 109 106 109 MB/s
Read 162
Write 38.3
Mixed 44.9
SusWrite 104
102% 87.2 MB/s
4K Read 13.2
4K Write 1.5
4K Mixed 2.8
195% 5.83 MB/s
119GB free, PID cfc5
Operating at USB 3.1 Speed
SusWrite @10s intervals: 93 102 103 100 101 103 MB/s
Read 153
Write 12.9
Mixed 45.2
SusWrite 100
89% 77.9 MB/s
4K Read 9.3
4K Write 1.5
4K Mixed 2.8
181% 4.53 MB/s
119GB free, PID cfc5
Operating at USB 3.1 Speed
SusWrite @10s intervals: 29 33 33 33 33 33 MB/s
Read 89.2
Write 33
Mixed 54
SusWrite 32.5
63% 52.2 MB/s
4K Read 10.8
4K Write 1.8
4K Mixed 3.6
224% 5.4 MB/s
115GB free, PID cfc5
Operating at USB 2.1 Speed
SusWrite @10s intervals: 32 38 37 36 39 35 MB/s
Read 40.1
Write 11.7
Mixed 23.4
SusWrite 36.2
35% 27.8 MB/s
4K Read 6.4
4K Write 0.1
4K Mixed 1.3
71% 2.6 MB/s
20GB free, PID cfc5
Operating at USB 3.1 Speed
SusWrite @10s intervals: 18 15 15 15 15 16 MB/s
Read 43.2
Write 14.8
Mixed 21.3
SusWrite 15.7
28% 23.8 MB/s
4K Read 4.7
4K Write 0.4
4K Mixed 2.2
106% 2.43 MB/s
20 MORE »
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

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) July 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

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

 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 $171Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $150
Intel Core i5-13600K $270Nvidia RTX 4060-Ti $388WD Black SN850X M.2 1TB $90
Intel Core i5-12400F $110Nvidia RTX 4070 $520Crucial T700 M.2 4TB $353
Today's hottest deals
If you buy something via a price link, UserBenchmark may earn a commission
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback