Steam low-performance usage launch list for farming cards:
TF2: steam://run/440//-textmode -nosound -novid -nopreload -nojoy -sw -noshader -nosound -low -nohltv -maxplayers 1
Portal 2: steam://run/620//-textmode -nosound -novid -nopreload -nojoy -sw -noshader -nosound -low -nohltv -maxplayers 1
HL2: steam://run/220//-textmode -nosound -novid -nopreload -nojoy -sw -noshader -nosound -low -nohltv -maxplayers 1
DOTA 2: steam://run/570//-textmode -nosound -novid -nopreload -nojoy -sw -noshader -nosound -low -nohltv -maxplayers 1
CS:GO : steam://run/730//-textmode -nosound -novid -nopreload -nojoy -sw -noshader -nosound -low -nohltv -maxplayers 1
L4D2: steam://run/550//-textmode -nosound -novid -nopreload -nojoy -sw -noshader -nosound -low -nohltv -maxplayers 1