I have a few 1u rack mount servers sitting around that are running nicely but have older CPUs (eg. AMD Opteron 252's). I was thinking of throwing some new CPUs and extra memory in to get a performance boost.
What's a good way to figure out what CPUs (if any) are compatible?
[Update] One I was able to dig up is: HP DL145 2x 2.6GHZ OPTERON 2GB MEM 80GB SATA (dual opteron 252).