I have a K6-3+ 450 for sale for $85 if anyone wants it. It's brand spanking new, never run in a system yet. I bought it almost a year ago to put into my FIC PA-2013 motherboard but I opted to go athlon and swap everything so I was stuck with this chip that went unused. E-mail me if interested, I seen a few systems go 650+ mhz with these chips, but do 600 mhz everyday .