Because I love system monitors, I always go back to using Conky.
Here is my current Conky Script:
background yes
use_xft yes
xftfont Sans:size=8
xftalpha 1
update_interval 1.0
total_run_times 0
own_window yes
own_window_transparent yes
own_window_type normal
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager
double_buffer yes
minimum_size 200 700
maximum_width 400
draw_shades yes
draw_outline no
draw_borders no
draw_graph_borders yes
default_color white
default_shade_color black
default_outline_color white
alignment top_right
gap_x 12
gap_y 12
no_buffers yes
text_buffer_size 1024
uppercase no
cpu_avg_samples 2
override_utf8_locale no
TEXT
${font sans-serif:bold:size=8}SYSTEM ${hr 2}
${font sans-serif:normal:size=8}$sysname $kernel $alignr $machine
Host:$alignr$nodename
Uptime:$alignr$uptime
File System: $alignr${fs_type}
${font sans-serif:bold:size=8}PROCESSORS ${hr 2}
${font sans-serif:normal:size=8}${cpugraph cpu1}
CPU1: ${cpu cpu1}% ${cpubar cpu1}
${font sans-serif:bold:size=8}MEMORY ${hr 2}
${font sans-serif:normal:size=8}RAM $alignc $mem / $memmax $alignr $memperc%
$membar
${font sans-serif:bold:size=8}DISKS ${hr 2}
${font sans-serif:normal:size=8}/ $alignc ${fs_used /} / ${fs_size /} $alignr ${fs_used_perc /}%
${fs_bar /}
SWAP $alignc ${swap} / ${swapmax} $alignr ${swapperc}%
${swapbar}
${font sans-serif:bold:size=8}TOP PROCESSES ${hr 2}
${font sans-serif:normal:size=8}${top_mem name 1}${alignr}${top mem 1} %
${top_mem name 2}${alignr}${top mem 2} %
$font${top_mem name 3}${alignr}${top mem 3} %
$font${top_mem name 4}${alignr}${top mem 4} %
$font${top_mem name 5}${alignr}${top mem 5} %
${font sans-serif:bold:size=8}NETWORK ${hr 2}
${font sans-serif:normal:size=8}IP address: $alignr ${addr eth1}
ESSID: $alignr ${wireless_essid eth1}
${downspeedgraph eth1}
DLS:${downspeed eth1} kb/s $alignr total: ${totaldown eth1}
${upspeedgraph eth1}
ULS:${upspeed eth1} kb/s $alignr total: ${totalup eth1}
And here is a screenshot:
