The following is a test with the Raspberry Pi 32 GB A2 card and appears to report accurately. I am looking through old cards across several brands. Some have more than double the sequential write speed and had good random writes back when first tested. I threw out the one card labelled A2 that did not pass as A2.
Some cards now appear to now have lower random writes, passing as A1 but not A2. The test conditions are the same. Same old Pi 5. Same 16 GB image with all updates. Just using Trixie as the base instead of Bookworm.
Matching the exact tests is difficult as I did not keep many. Some of the cards have the same name but different batch numbers on the card.
Code:
Raspberry Pi Diagnostics - version 1.4Fri Nov 7 18:23:07 2025Test : SD Card Speed TestRun 1prepare-file;0;0;32961;64seq-write;0;0;33044;8seq-read;92499;22;0;0rand-4k-write;0;0;8431;2107rand-4k-read;22816;5704;0;0Sequential write speed 33044 KB/sec (target 10000) - PASSRandom write speed 2107 IOPS (target 500) - PASSRandom read speed 5704 IOPS (target 1500) - PASSTest PASSSome cards now appear to now have lower random writes, passing as A1 but not A2. The test conditions are the same. Same old Pi 5. Same 16 GB image with all updates. Just using Trixie as the base instead of Bookworm.
Matching the exact tests is difficult as I did not keep many. Some of the cards have the same name but different batch numbers on the card.
Statistics: Posted by peterlite — Fri Nov 07, 2025 8:02 am