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SanDiskSDCZ88-128G
Group Average(9 Highest-Voted)
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Effective Speed 
+95%
Real World Speed
Performance profile from 1,199 user samples
Benchmark your USB here
1,199 User Benchmarks
Best Bench: 122% 31GB free, PID 5588 @USB 3.0
Worst Bench: 16% 25GB free (System drive), PID 5588 @USB 3.0
Poor: 16% Great: 122%
SPEED RANK: 6th / 639
Effective Speed
Effective USB Speed 		77.1 % Hugely faster effective speed.
+95% 		39.5 %
Peak Score 
+79%
Read
Peak Sequential Read Speed 		249 MB/s Much faster peak read speed.
+41% 		177 MB/s
Write
Peak Sequential Write Speed 		216 MB/s Hugely faster peak write speed.
+105% 		105 MB/s
4K Read
Peak 4K Random Read Speed 		12.4 MB/s Faster peak random read.
+20% 		10.4 MB/s
4K Write
Peak 4K Random Write Speed 		11.7 MB/s Hugely faster peak random write.
+150% 		4.67 MB/s
Value & Sentiment 
+24%
User Rating
UBM User Rating 		55 % 67 % More popular.
+22%
Price
Price (score) 		$60 29.5 USD Hugely cheaper.
+103%
Value
Value For Money 		67.5 % Hugely better value.
+196% 		22.8 %
Nice To Haves 
+10%
Age
Newest 		74+ Months Slightly more recent.
+10% 		81.3 Months
Specifications 
Capacity
Capacity 		128GB   —
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) July 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.
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

Gaming Desktop ProGaming

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
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?
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 i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9400F $158Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $355Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $55
HDDRAMUSB
Seagate Barracuda 1TB (2016) $47Corsair Vengeance LPX DDR4 3200 C16 2x8GB $67SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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