I usually did big computer upgrades (AMD Duron with SDRAM -> AMD Athlon with DDR, then to AMD Athlon64 with DDR) but this time it was only CPU. From Athlon64 3200+ (2GHz) I switched to Athlon64 X2 4200+ (2.2GHz). Operation was quite simple — take one CPU, insert another but old one glued to radiator so I had to use some force :(
Then first boot and question… will BIOS recognize new CPU or not. It properly displayed information and then Linux started — just to show me 1 CPU. Quick installation of already prepared SMP kernel and /proc/cpuinfo had more informations.
Machine is quite loud when operating on full speed but most of time CPUFreq is able to lower frequency (1.0/1.8/2.0/2.2GHz steps are available) so it is noiseless. It is nice to see how CPU usage is split into two cores — now I do not have to wait when two builds are progressing and I want to run some applications.
Now doing builds will be more comfortable :)