isaacjacobson
Well-known member
For audio projects, I typically use the classic SanDisk Ultra (A1; 64 GB; U1; XC)
But after noticing the Amazon Basics (A2; 64 GB; U3; XC) performed better with the Blackmagic Speed Test, I switched to that.
I soon began noticing issues in performance, so I tested it with Teensy's SdCardTest. Despite better specs and performing much better in the Blackmagic Speed Test, Amazon Basics performed much worse on Teensy's SdCardTest.
Any idea why?
Dumb question, but is there a 'coding solution' to optimize for the Amazon Basics? (I ask because I'm sitting on a 'few' of them now...)
SdCardTest Results:
SanDisk Ultra
Amazon Basics
But after noticing the Amazon Basics (A2; 64 GB; U3; XC) performed better with the Blackmagic Speed Test, I switched to that.
I soon began noticing issues in performance, so I tested it with Teensy's SdCardTest. Despite better specs and performing much better in the Blackmagic Speed Test, Amazon Basics performed much worse on Teensy's SdCardTest.
Any idea why?
Dumb question, but is there a 'coding solution' to optimize for the Amazon Basics? (I ask because I'm sitting on a 'few' of them now...)
SdCardTest Results:
SanDisk Ultra
Code:
SD Card Test
------------
SD card is connected :-)
Card type is SDHC
File system space is 63832.16 Mbytes.
SD library is able to access the filesystem
Reading SDTEST1.WAV:
Overall speed = 21.72 Mbyte/sec
Worst block time = 0.64 ms
21.89% of audio frame time
Reading SDTEST1.WAV & SDTEST2.WAV:
Overall speed = 1.27 Mbyte/sec
Worst block time = 1.45 ms
49.84% of audio frame time
Reading SDTEST1.WAV & SDTEST2.WAV staggered:
Overall speed = 1.27 Mbyte/sec
Worst block time = 1.15 ms
39.57% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV:
Overall speed = 1.26 Mbyte/sec
Worst block time = 2.13 ms
73.52% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV staggered:
Overall speed = 1.26 Mbyte/sec
Worst block time = 1.59 ms
54.66% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV, SDTEST4.WAV:
Overall speed = 1.28 Mbyte/sec
Worst block time = 2.77 ms
95.37% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV, SDTEST4.WAV staggered:
Overall speed = 1.28 Mbyte/sec
Worst block time = 1.97 ms
67.80% of audio frame time
Amazon Basics
Code:
SD Card Test
------------
SD card is connected :-)
Card type is SDHC
File system space is 63832.16 Mbytes.
SD library is able to access the filesystem
Reading SDTEST1.WAV:
Overall speed = 21.92 Mbyte/sec
Worst block time = 0.58 ms
20.06% of audio frame time
Reading SDTEST1.WAV & SDTEST2.WAV:
Overall speed = 2.83 Mbyte/sec
Worst block time = 4.57 ms
157.41% of audio frame time
Reading SDTEST1.WAV & SDTEST2.WAV staggered:
Overall speed = 2.80 Mbyte/sec
Worst block time = 4.61 ms
158.93% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV:
Overall speed = 2.09 Mbyte/sec
Worst block time = 4.07 ms
140.28% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV staggered:
Overall speed = 2.08 Mbyte/sec
Worst block time = 4.79 ms
165.03% of audio frame time
Reading SDTEST1.WAV, SDTEST2.WAV, SDTEST3.WAV, SDTEST4.WAV:
Overall speed = 2.19 Mbyte/sec
Worst block time = 5.10 ms
175.75% of audio frame time