Howto: conky

My content of .conkyrc:

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background yes
font Zekton:size=7
xftfont Zekton:size=7
use_xft yes
xftalpha 0.1
update_interval 2.0
total_run_times 0
own_window yes
own_window_type override
own_window_transparent yes
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager
double_buffer yes
draw_shades no
draw_outline no
draw_borders no
draw_graph_borders no
minimum_size 220 5
maximum_width 220
default_color d7d7d7
default_shade_color black
default_outline_color black
alignment bottom_right
gap_x 10
gap_y 10
no_buffers yes
cpu_avg_samples 2
override_utf8_locale no
uppercase no # set to yes if you want all text to be in uppercase
use_spacer no

TEXT
${font Zekton:style=Bold:pixelsize=42}${alignc}${time %H:%M:%S}${font Zekton:size=7}
SYSTEM ${hr 1 }

Hostname: $alignr$nodename
Kernel: $alignr$kernel
Uptime: $alignr$uptime
Processes: ${alignr}$processes ($running_processes running)
Load: ${alignr}$loadavg
Battery ${battery_time BAT0} ${alignr}(${battery BAT0})
${battery_bar 4 BAT0}

FILESYSTEM ${hr 1}${color}

Root: ${alignr}${fs_free /} / ${fs_size /}
${fs_bar 4 /}
Home: ${alignr}${fs_free /home} / ${fs_size /home}
${fs_bar 4 /}

NETWORK ${hr 1}${color}

Down ${downspeed eth1} k/s ${alignr}Up ${upspeed eth1} k/s
${downspeedgraph eth1 25,107} ${alignr}${upspeedgraph eth1 25,107}
Total ${totaldown eth1} ${alignr}Total ${totalup eth1}

SYSTEM RESOURCE ${hr 1}${color}

Highest CPU $alignr CPU% MEM%
${top name 1}$alignr${top cpu 1}${top mem 1}
${top name 2}$alignr${top cpu 2}${top mem 2}
${top name 3}$alignr${top cpu 3}${top mem 3}

Highest MEM $alignr CPU% MEM%
${top_mem name 1}$alignr${top_mem cpu 1} ${top_mem mem_res 1}
${top_mem name 2}$alignr${top_mem cpu 2} ${top_mem mem_res 2}
${top_mem name 3}$alignr${top_mem cpu 3} ${top_mem mem_res 3}

CPU ${alignc} ${freq}MHz / ${acpitemp}C ${alignr}(${cpu cpu1}%)
${cpubar 4 cpu1}
${cpugraph}
RAM ${alignr}$mem / $memmax ($memperc%)
${memgraph}

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or: using 'mem_res' instead of 'mem', which is percentage
${top_mem name 1} ${top_mem cpu 1}$alignr${top_mem mem_res 1}