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YOUR USB
AdataAC008-16G-RKD
SanDiskSDCZ80-064G
$72
▲ 503 ▼

Release date ≤ Q1 2014.

VS
▲ 609,046 ▼
 $72 

Release date: Q2 2012.

Effective Speed 
+1,205%
Real World Speed
Performance profile from 8,021 user samples
Benchmark your USB here
1,800 User Benchmarks
Best Bench: 9% 14GB free, PID c08a @USB 2.0
Worst Bench: 3% 14GB free, PID c08a @USB 2.0
Poor: 3% Great: 9%
SPEED RANK: 549th / 639
6,221 User Benchmarks
Best Bench: 111% 48GB free, PID 5580 @USB 3.0
Worst Bench: 22% 53GB free, PID 5580 @USB 3.0
Poor: 22% Great: 111%
SPEED RANK: 7th / 639
Effective Speed
Effective USB Speed 		5.67 % 74 % Insanely faster effective speed.
+1,205%
Peak Score 
+850%
Read
Peak Sequential Read Speed 		28 MB/s 197 MB/s Hugely faster peak read speed.
+604%
Write
Peak Sequential Write Speed 		16.7 MB/s 188 MB/s Insanely faster peak write speed.
+1,026%
4K Read
Peak 4K Random Read Speed 		6.85 MB/s 13 MB/s Hugely faster peak random read.
+90%
4K Write
Peak 4K Random Write Speed 		0.5 MB/s 8.9 MB/s Insanely faster peak random write.
+1,680%
Value & Sentiment 
+187%
Value
Value For Money 		3.69 % 26.8 % Hugely better value.
+626%
User Rating
UBM User Rating 		50 % 60 % More popular.
+20%
Price
Price (score) 		$10 Hugely cheaper.
+86% 		$72
Nice To Haves 
+13%
Age
Newest 		129+ Months More recent.
+13% 		149 Months
Specifications 
Capacity
Capacity 		16GB 64GB
Conclusion 
Average Bench 5.67%
Average Bench 74%

For real world usability this is currently the best 64GB flash drive (superseded by the Ventura Ultra - 2014). It has a very balanced performance profile with an exceptional 4K random write speed. The 16GB version of the Extreme is currently the value leader in the USB 3.0 flash drive shootout. At present there are no viable alternatives to the 64GB Extreme in fact the Corsair voyager GT turbo is the only drive on the horizon that may challenge the Sandisk any time soon. There are however several reports (Newegg, Amazon) of compatibility issues with this, the 64GB version (other versions are fine), so if you do go for the 64GB version, don't throw the receipt away in a hurry. [Feb '13 USBFlashPro]

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USB Flash Drive Rankings (Price vs Performance) November 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.
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.

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  • - Download and run UserBenchmark
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  • - Reports are generated and presented on userbenchmark.com
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 Frequently Asked Questions

Storage Devices FAQ
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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?
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USB Flash Drives
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Why should USB 2.0 Flash Drives be avoided?
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Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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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 the gold standard for users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
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