Real World Speed
Performance profile from 5,488 user samples
1,995 User Benchmarks
Best Bench: 39% 34GB free, PID 5583 @USB 3.0
Worst Bench: 10% 47GB free, PID 5583 @USB 2.1
Poor: 10% Great: 39%
SPEED RANK: 125th / 618
3,493 User Benchmarks
Best Bench: 108% 29GB free, PID 5580 @USB 3.0
Worst Bench: 26% 21GB free, PID 5580 @USB 2.1
Poor: 26% Great: 108%
SPEED RANK: 7th / 618
Effective Speed
Effective USB Speed
40.1 % -149% 100 % Hugely faster effective speed.
+149%
Read
Peak Sequential Read Speed
143 MB/s -38% 197 MB/s Much faster peak read speed.
+38%
Write
Peak Sequential Write Speed
56.7 MB/s -232% 188 MB/s Hugely faster peak write speed.
+232%
4K Read
Peak 4K Random Read Speed
5.63 MB/s -131% 13 MB/s Hugely faster peak random read.
+131%
4K Write
Peak 4K Random Write Speed
1.86 MB/s -378% 8.9 MB/s Hugely faster peak random write.
+378%
Value
Value For Money
67 % -17% 78.6 % Better value.
+17%
User Rating
UBM User Rating
61 % -23% 75 % More popular.
+23%
Price
Price (score)
$21 Much cheaper.
+53%
$45 -53%
Age
Newest
36 Months Much more recent.
+42%
62 Months -42%
Capacity
Capacity
64GB 64GB
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The 64GB SanDisk Ultra Fit is the largest capacity available in the Ultra Fit range. Both the 16GB and 32GB siblings fared well in terms of peak performance but with the majority of flash based products larger capacities are faster. Unfortunately for the Ultra Fit this proved not to be the case. Comparing the performance leading Mushkin Ventura and 64GB Ultra Fit shows that the Ventura is around 600% faster but just 60% more expensive. Although the Ultra Fit is a contender in the 32GB and 16GB capacities it doesn't fare well against the 64GB competition. If you are looking for a tiny form factor the 64GB SanDisk Ultra Fit is superb but otherwise there are better alternatives available with better peak and significantly better sustained transfer speeds. [Oct '14 USBFlashPro]

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For real world usability this is currently the best 64GB flash drive (superseded by the Ventura Ultra - 2014).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) August 2017 USB Rankings.

We highlight the best USB flash drive in terms of balanced performance and value for money using price, 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 price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. Vote to share your opinion. [USBFlashPro]

How Fast Is Your USB? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware 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 upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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The Best.
CPUGPUSSD
Intel Core i7-7700K $290Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $120
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $165
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
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