The average computer contains very little precious metal but if you have enough computers you can make some good money.
An average computer should net you around $6.00 to $9.00 in scrap recycling money from scrapping the computer.
About $0.80 to a $1.00 of that price is in the gold content and most of the gold content in computers is from the motherboard which contains most of the gold and other precious metals.
You can usually sell scrap motherboards as is to some scrap metal yards for $2.00 to $3.00 per pound depending on the scrap metal prices and what your scrap yard is paying for that E Waste.