We have
no idea what you "found at Google" and we all realize the value at
https://wiki.archlinux.org/
What does
https://wiki.archlinux.org/ offer?
Show some effort, what have you tried?
gkrellm is shiny enough and basic.
Conky has no built in graphs as installed, unless you cheat and use Conky Manager or some thing,
or modify code your own after install.
Some people have shiny LUA scripts with their conkys, but you only need an "easy to read graph" so gkrellm
is my advice.
Have a good day.