Average Bench: 26% (142nd of 639)

Based on 7,858 user benchmarks.  Device: VID 0781 PID 5583 Model: SanDisk Ultra Fit

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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Poor: 11%Average: 26% Great: 39%

Very poor average bench

The SanDisk Ultra Fit USB 3.0 64GB averaged 74.0% 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 2.05MB/s
Avg. 4K Random Write Speed 1.91MB/s

Good consistency

The range of scores (95th - 5th percentile) for the SanDisk Ultra Fit USB 3.0 64GB is 28.3%. This is a relatively narrow range which indicates that the SanDisk Ultra Fit USB 3.0 64GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 26MB/s
Avg. 4K Random Read Speed 4.77MB/s
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Average Bench

(Based on 7,858 samples)
Min Avg Max
27.2 Read 91.7 158
10.2 Write 42.4 88.3
11.8 Mixed 46.5 97.8
8.9 SusWrite 26 37.7
61.3% 51.7 MB/s
Min Avg Max
2.8 4K Read 4.77 6.8
0.5 4K Write 1.91 3.1
0.9 4K Mixed 2.05 3.6
152% 2.91 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
13GB free, PID 5583
Operating at USB 3.0 Speed
SusWrite @10s intervals: 26 14 13 13 13 13 MB/s
Read 97
Write 21.7
Mixed 24
SusWrite 15.1
40% 39.5 MB/s
4K Read 6.3
4K Write 1.4
4K Mixed 1.5
122% 3.07 MB/s
49GB free, PID 5583
Operating at USB 2.1 Speed
SusWrite @10s intervals: 22 23 17 18 17 18 MB/s
Read 36
Write 19.5
Mixed 20.2
SusWrite 19.1
30% 23.7 MB/s
4K Read 5
4K Write 2.3
4K Mixed 1.7
155% 3 MB/s
59GB free, PID 5583
Operating at USB 2.1 Speed
SusWrite @10s intervals: 19 20 21 21 21 20 MB/s
Read 37.5
Write 19.7
Mixed 20
SusWrite 20.3
30% 24.4 MB/s
4K Read 5.5
4K Write 1.9
4K Mixed 2.6
174% 3.33 MB/s
21GB free, PID 5583
Operating at USB 2.1 Speed
SusWrite @10s intervals: 23 23 18 17 17 11 MB/s
Read 34.5
Write 22.3
Mixed 25.3
SusWrite 18.2
32% 25.1 MB/s
4K Read 4.4
4K Write 1.9
4K Mixed 1.4
129% 2.57 MB/s
33GB free, PID 5583
Operating at USB 2.1 Speed
SusWrite @10s intervals: 18 17 15 15 15 15 MB/s
Read 30.5
Write 19.3
Mixed 21.5
SusWrite 16.1
28% 21.9 MB/s
4K Read 5.2
4K Write 2
4K Mixed 1.6
142% 2.93 MB/s
7,858 MORE »

 Prices

Approx. $19 @ launch in Aug '14
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EbayUS $456 mins
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USB Flash Drive Rankings (Price vs Performance) June 2020 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]

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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

So small you hardly know it’s there...

Added 5 years ago.

Excellent

23 months ago.

This USB thumb drive from Sandisk is extremely small compared to most thumb drives. I can store all my work files, encrypt the USB thumb drive for security and have it attached on my key chain and in my pocket. It is not big and bulky at all. Very practical and useful device Sandisk - Excellent work!!! I will be buying bigger sized (i.e. GB) in the same form factor in the future from Sandisk. Keep them coming (i.e. very small USB Thumb Drives) Sandisk!

Info  www.sandisk.com/...

Official Sandisk website


Terrible

16 months ago.

Overheats and melts in a USB3 port


Excellent

5 years ago.


Good

7 months ago.

Well probably one of the densest thumb drive ever. Suggested to buy something that are larger but priced same and offered better performance instead. One Finnish user noted heating issues for this thumb drive. This thumb drive is intended to fit in an ultra compact spaces, are light and small.


Your
opinion?
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

The Best.
CPUGPUSSD
Intel Core i5-9400F $165Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $196Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $55
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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