Memory Raspberry Pi
For casual running of FlightGear, a quality SD card works well. Look for Class A1 cards. The 'A' is for applications. In addition to a write speed of 10MB/s, these support at least 1500 read operations and 500 write operations per second. Do not use cheap fake SD cards. Interestingly, there is a new tool to test your SD cards. This new tool is called agnostics and can be installed with the below commands:
sudo apt update sudo apt install agnostics
What device does it test?
Simon Long wrote (from the below link)
It tests whatever device currently containst the directory /var/tmp. If you want to test another device, modify the relevant line in sd_bench.fio to select a directory on the device you want to test.
To learn much more about the SD cards and agnostics, see the below link:
SD Card Speed Test
|SD Card||Bar Code||SWS KB/sec||RWS IOPS||RRS IOPS||Comment|
|SP Superior Pro 64GB||X0026RJ70Z||38986||1067||3344||Used for ~ 1 month|