You can actually get more. You have an amount of resources for ARM servers, if you allocate all of that to a single one you ger 24GB RAM and 4 vCPU.

This was reduced recently to 2/12. It's also next to impossible to allocate the free stuff unless you put in a CC. If you do, you get the servers right away, though. Just be careful not to spend. You can set up a budget trigger to shut down the vms.

Old servers may have been grandfathered, but mine was set to 1/1 and couldn't be reshaped.