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YOUR USB
SanDiskSDCZ88-128G
Group Average(9 Highest-Voted)
VS
Effective Speed 
+81%
Real World Speed
Performance profile from 815 user samples
Benchmark your USB here
815 User Benchmarks
Best Bench: 117% 119GB free, PID 5588 @USB 3.0
Worst Bench: 27% 88GB free, PID 5588 @USB 2.1
Poor: 27% Great: 117%
SPEED RANK: 6th / 639
Effective Speed
Effective USB Speed 		120 % Hugely faster effective speed.
+81% 		66.3 %
Peak Lab Bench 
+81%
Read
Peak Sequential Read Speed 		251 MB/s Much faster peak read speed.
+35% 		186 MB/s
Write
Peak Sequential Write Speed 		207 MB/s Hugely faster peak write speed.
+88% 		110 MB/s
4K Read
Peak 4K Random Read Speed 		13.8 MB/s Faster peak random read.
+24% 		11.2 MB/s
4K Write
Peak 4K Random Write Speed 		11.4 MB/s Hugely faster peak random write.
+175% 		4.14 MB/s
Value & Sentiment 
+29%
User Rating
UBM User Rating 		51 % 66.4 % Much more popular.
+30%
Price
Price (score) 		$60 33.4 USD Much cheaper.
+80%
Value
Value For Money 		140 % Hugely better value.
+196% 		47.2 %
Nice To Haves 
+17%
Age
Newest 		48 Months More recent.
+17% 		56 Months
Specifications 
Capacity
Capacity 		128GB   —
User Builds 
815
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

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USB Flash Drive Rankings (Price vs Performance) April 2018 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.
  • Fastest real world speed - Real World Speed measures performance for typical flash usage patterns.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
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

Desktop Gaming Workstation

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

Storage Devices FAQ
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?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
USB Flash Drives
How do you install an OS from a USB flash drive?
What is the Flash Drive value for money rating?
What is effective USB Flash Drive speed?
Why should USB 2.0 Flash Drives be avoided?
File system considerations?
Do dimensions matter?
What are the main factors to look out for?
16GB USB Flash Drives
Why is bigger better?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $80
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $170AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $45
Seagate Barracuda 2TB (2016) $36Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
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