AMD Aluminum K6: Released in 1997
Weight in Gold: 0.11g
Estimated $4.00 per CPU
Cyrix 686: Released in 1996
Weight in gold: 0.21g
Estimated $9.72 per CPU
Cyrix 586: Released in 1995
Weight in Gold: 0.25g
Estimated: $11.58 per CPU
IBM 686 PR200: Released in 1996
Weight in Gold: 0.25g
Estimated: $11.58 per CPU
Toshiba Server Cpu: Released in 1996
Weight in Gold: 0.27g
Estimated: $12.50 per CPU
NEC Server Cpu: Release Date 1996
Weight in Gold: 0.27g
Estimated: $12.50 per CPU
AMD K5: Released date 1995
Weight in Gold: 0.50g
Estimated $23.15 per CPU
Pentium Pro: Released date 1996
Weight in Gold: 1.0g
Estimated: $46.30 per CPU
All of these CPU's that are listed are RARE, some are harder to find then others. Some people like to scrap them for the gold contents and others for a collectors item. Be sure to compare the gold value to the collector value and determine which is more profitable.
*I don't advocate destroying history