➜ ~ inxi -SMI
System: Host: ts Kernel: 5.8.15-2-MANJARO x86_64 bits: 64 Desktop: Xfce Distro: Manjaro Linux
Machine: Type: Desktop System: LENOVO product: 30CY006WGE v: ThinkStation P330 serial: <superuser/root required>
Mobo: LENOVO model: 314F v: SDK0T08861 WIN 3305275981957 serial: <superuser/root required> UEFI: LENOVO v: M1VKT57A
date: 05/27/2020
Info: Processes: 307 Uptime: 3h 14m Memory: 62.50 GiB used: 35.22 GiB (56.4%) Shell: Zsh inxi: 3.1.05
Just tested - on my system pamac uses 800M when running the update process from terminal.
$ pamac update
I don’t know if this is the usual pattern as I have never had any issues.
You have not provided any information - one way of making sure it is pamac is to run htop in a separate window and filter to show only pamac process.