I have installed antergos arch linux about 4 times and each time after I have installed all my needed application, the default memory consumed after bootup is about 1GB. On Fedora 20 or Ubuntu 13.10 and 14.04, it averages about 500MB. I’m not sure what the cause is. Part from the memory usage upon boot, I’m quite happy with the setup i had. I’m using ubuntu now.
My laptop has 4GB ram and since archlinux doesn’t support PAE it means only 3.5GB is seen, then 1 gB out of this is used up after just starting the system. On a couple of occasions my swap was used which never happend on other non arch based distros i’ve tried. I hope there is something that can be done.