Real World Speed
Performance profile from 4,270 user samples
3,111 User Benchmarks
Best Bench: 45% 3GB free, PID 5581 @USB 3.0
Worst Bench: 10% 12GB free, PID 5581 @USB 2.1
Poor: 10% Great: 45%
SPEED RANK: 164th / 622
1,159 User Benchmarks
Best Bench: 79% 15GB free, PID 5580 @USB 3.0
Worst Bench: 29% 11GB free, PID 5580 @USB 2.1
Poor: 29% Great: 79%
SPEED RANK: 12th / 622
Effective Speed
Effective USB Speed
15.1 % -407% 76.6 % Hugely faster effective speed.
+407%
Read
Peak Sequential Read Speed
75.5 MB/s -159% 196 MB/s Hugely faster peak read speed.
+159%
Write
Peak Sequential Write Speed
8.85 MB/s -601% 62 MB/s Hugely faster peak write speed.
+601%
4K Read
Peak 4K Random Read Speed
8.35 MB/s -83% 15.3 MB/s Hugely faster peak random read.
+83%
4K Write
Peak 4K Random Write Speed
0.08 MB/s -12,525% 10.1 MB/s Insanely faster peak random write.
+12,525%
Value
Value For Money
14.7 % -128% 33.6 % Hugely better value.
+128%
User Rating
UBM User Rating
57 % -16% 66 % More popular.
+16%
Price
Price (score)
$9 Much cheaper.
+55%
$20 -55%
Age
Newest
57 Months Slightly more recent.
+11%
64 Months -11%
Capacity
Capacity
16GB 16GB
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Sandisk had phenomenal success with the Sandisk Extreme which I reviewed nearly two years ago. The Extreme is still one of the best flash drives available. I had high hopes for the Ultra despite its marginally more budget orientation. Unfortunately the 16GB Ultra turned out to be a disappointment. With sequential read/write speeds of just 75/9 Mbps the Ultra lies in the bottom 25% of 16GB USB 3.0 flash drives. Small file (4K) read/write speeds clocked in at 8.35/0.08 MBps which is also in the bottom 25%. On the bright side the Ultra USB 3.0 isn't overpriced so it does represents reasonable value for money but I would happily spend a little more and get the record breaking 16GB Sandisk Extreme [Feb '14 USBFlashPro]

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The benchmark scores for the SanDisk Extreme were stunning. Until now every flash drive we have tested has shown a serious weakness in the area of 4K random writes. The SanDisk Extreme achieved a 4K random write speed of 2.1 MB/s which was over three times faster than the best of the rest, unfortunately we were unable to get consistent measurements but 2.1 MB/s was towards at the lower end of the range (10.8 MB/s - 1.71 MB/s) we observed. We suspect the inconsistency relates to the way the controller batches page cleanup. The other benchmark observations were all consistent and to date this drive has the highest sequential read we have seen on a 16GB flash drive. The SanDisk Extreme has not been released in the UK. Our test unit had to be shipped from Hong Kong where we were able to purchase it at at an extremely reasonable price. We will update the price if/when the drive becomes officially available in the UK ... [Jul '12 USBFlashPro]

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USB Flash Drive Rankings (Price vs Performance) October 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.

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CPUGPUSSD
Intel Core i7-7700K $300Nvidia GTX 1070 $390Samsung 850 Evo 250GB $96
AMD Ryzen 7 1700 $280AMD RX 480 $491Samsung 850 Pro 256GB $126
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $159
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $158SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $842SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $180SanDisk Ultra Fit 32GB $13
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