sandisk extreme 128gb v30 micro sd card cannot sustain 30MB/s when copying large files from ssd. fluctuates between 1-20 MB/s, sometimes peak above 40

[ubrokeit]

 

v30 means it should be able to write the whole card with giant files at a minimum of 30 MB/s right?

so if I'm copying a file from a fast nvme ssd to the sd card, and it's dipping to 1 MB/s, time to get a warranty replacement huh

 

or does this have some kind of cache exhaustion if that's even possible?

this was one of the more expensive cards sandisk had for sale

 

 

[DoctorNick]

13 minutes ago, ubrokeit said:

 

v30 means it should be able to write the whole card with giant files at a minimum of 30 MB/s right?

so if I'm copying a file from a fast nvme ssd to the sd card, and it's dipping to 1 MB/s, time to get a warranty replacement huh

 

or does this have some kind of cache exhaustion if that's even possible?

this was one of the more expensive cards sandisk had for sale

 

 

This can vary depending on files sizes. Try downloading AS SSD and run it on the SD card