12 Micro SD cards tested. Raspberry Pi 4 Speed test.

Results (Amazon links below)

Kingston 64GB Canvas Go plus A2
Sequential write speed 32251 KB/sec (target 10000) – PASS
Random write speed 1521 IOPS (target 500) – PASS
Random read speed 3621 IOPS (target 1500) – PASS

Sandisk Extreme pro 64GB A2
Sequential write speed 38035 KB/sec (target 10000) – PASS
Random write speed 969 IOPS (target 500) – PASS
Random read speed 2548 IOPS (target 1500) – PASS

braveeagle 32GB
Sequential write speed 21896 KB/sec (target 10000) – PASS
Random write speed 1123 IOPS (target 500) – PASS
Random read speed 3825 IOPS (target 1500) – PASS

alertseal
Sequential write speed 27970 KB/sec (target 10000) – PASS
Random write speed 1095 IOPS (target 500) – PASS
Random read speed 3796 IOPS (target 1500) – PASS

Magix 16GB A1
Sequential write speed 29574 KB/sec (target 10000) – PASS
Random write speed 847 IOPS (target 500) – PASS
Random read speed 3056 IOPS (target 1500) – PASS

Sandisk 64GB Extreme A2 From GoPro
Sequential write speed 32204 KB/sec (target 10000) – PASS
Random write speed 894 IOPS (target 500) – PASS
Random read speed 2077 IOPS (target 1500) – PASS

Samsung EVO 32GB
Sequential write speed 24871 KB/sec (target 10000) – PASS
Random write speed 626 IOPS (target 500) – PASS
Random read speed 3513 IOPS (target 1500) – PASS

Magix 32GB A1
Sequential write speed 14021 KB/sec (target 10000) – PASS
Random write speed 1188 IOPS (target 500) – PASS
Random read speed 3333 IOPS (target 1500) – PASS

Netac 5 FALSE A1
Sequential write speed 36900 KB/sec (target 10000) – PASS
Random write speed 257 IOPS (target 500) – FAIL
Random read speed 1365 IOPS (target 1500) – FAIL

Integral A1
Sequential write speed 24852 KB/sec (target 10000) – PASS
Random write speed 555 IOPS (target 500) – PASS
Random read speed 1778 IOPS (target 1500) – PASS

Magix EVO A1
Sequential write speed 21236 KB/sec (target 10000) – PASS
Random write speed 969 IOPS (target 500) – PASS
Random read speed 2279 IOPS (target 1500) – PASS

Gigastone 32GB A1
Sequential write speed 21038 KB/sec (target 10000) – PASS
Random write speed 588 IOPS (target 500) – PASS
Random read speed 1745 IOPS (target 1500) – PASS

As an Amazon Associate I earn from qualifying purchases

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Alertseal 32GB https://amzn.to/2OB0KPB
Braveeagle 32GB https://amzn.to/3wQIl2D
Magix Evo 32GB https://amzn.to/2Z2VqWR
Gigastone 32GB https://amzn.to/3qfgpl6
Integral 32GB https://amzn.to/3tH1RNn
Sandisk Extreme Pro 64GB Micro SD https://amzn.to/2ZR9suA
Kingston 64GB A2 https://amzn.to/2NTnkPm
Magix 32GB https://amzn.to/2NYn3uo
Magix 16GB https://amzn.to/3gEJUb1
Samsung Evo 32GB https://amzn.to/3gqNgOA
Kingston Canvas 32gb micro sd https://amzn.to/2Pg7cbi
Samsung extreme 64GB A2 https://amzn.to/3iz8YBG

Video links

Micro SD card slot fix. Raspberry Pi 400.
https://youtu.be/Rg9SbfC62IA

Great adapter for Laptop and portable console builds. Raspberry Pi 4. SD card extender
https://youtu.be/TQJV_OfYvAA

Custom Raspberry Pi OS. Create a backup Restore to SD, USB or SSD. Raspberry Pi 4.
https://youtu.be/pPTaozHIQeU

Raspberry Pi OS. Backup, Shrink and Restore to SD, USB or SSD. Raspberry Pi 400, Pi 4.
https://youtu.be/00ck25k_lgw

240GB SSD Kingston Vs Crucial Speed Test. Raspberry Pi 4, Pi 400.
https://youtu.be/CRNHUuGZ9aU

Speed test Low cost SSDs. Raspberry Pi 4.
https://youtu.be/cS5GHv9EDwk

SD card Slot Vs USB 3.1 SD card reader. Raspberry Pi 4 8GB. A2 SD Card Speed test.
https://youtu.be/HT2mxX7TjR0

Should you get an A2 class sd card? Raspberry Pi 4 8GB. A1 Vs A2. Application Performance Class.
https://youtu.be/FSOZXTp2T-U

Compact flash Vs Sandisk Extreme Pro A2 SD. Raspberry Pi 4.
https://youtu.be/XyyzRyBP5ww

USB stick running Raspbian. Speed test. Raspberry Pi 4.
https://youtu.be/w6lM0tyFtOk

Raspbian speed test. USB Boot. SD card Vs SSD Vs Physical HDD Raspberry Pi 4. Diagnostics
https://youtu.be/kZcg87QprLQ

Speed test. Sata to USB 3 Cables. Raspberry Pi 4. SSD USB boot.
https://youtu.be/cdKZ2DXRCcA

Speed test Low cost SSDs. Raspberry Pi 4.
https://youtu.be/cS5GHv9EDwk

Raspberry Pi 4 NEWS playlist
https://www.youtube.com/playlist?list=PLMJAjiTgBtFk4KtZK73Bui1mqC8I80WWW

Raspberry Pi 4 Raspbian and more (400 plus videos)
https://www.youtube.com/playlist?list=PLMJAjiTgBtFnaITgDfjTnsL9RlnyPTl7M

source