Simple File Copying Test
Contents
CrystalDiskMark also stress tests any storage devices. It reports 4 numbers per run but you should mainly focus on the two numbers – ‘Seq’ and ‘4K’. The former stresses the storage based on sequential files while the latter uses 4K blocks of files which is much more stressful to both the CPU and to the storage device.
Here are the results for each cards:
Samsung 128GB EVO microSDXC (UHS-1)
Patriot LX 128GB microSDXC (UHS-1)
Silicon Power microSDXC (UHS-1)
Samsung 128GB EVO+ microSDXC (UHS-1)
SanDisk Ultra 128GB microSDXC (UHS-1)
Lexar 633x 64GB microSDXC (UHS-1)
SanDisk Extreme 64GB microSDXC (UHS-3)
Comparison Charts
Here are the two charts to compare performances of all cards using the Crystal Disk Marks application:
Here, the clear winner is the only UHS-3 class card of this group – SanDisk Extreme. Although Lexar claims a great deal with that ‘x633’ number, in reality, the SanDisk Ultra performs better, especially in write speeds.
Kent Beck is an American software engineer and the creator of extreme programming, a software development methodology that eschews rigid formal specifications for a collaborative and iterative design process. Wikipedia
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