allright.
three species of DDR ram.
bog standard, registered & ECC.
bog standard is good enough for most people.
u can get very high quality stuff too.
however... depending on if tis sdram & mobo type you are usually limited to a max of 3 sticks of unregistered sdram or 2 of ddr.
try to use more and you will probably run into trouble.
registered ram is higer quality... with a few other things included, so u can utilise more than 2 or 3 ram slots.
ECC ram, you should forget about... clock for clock its a bit slower than normal or unregistered. its use lies in that it has inbuilt error correction... so therefore is extreemly reliable. used mostly for server operations where speed is not as important as data integrity.
the good thing about the revised thundabird (ie athlon XP) is that it doesnt require a new socket... it could be used on many old ddr/sdr mobos.
HOWEVER, for the athlon XP to be fully supported and stable most new motherboards have updates to handle the thermal monitoring probe, different voltages, differetn multipliers etcetcetc.
i know for one that the KK266 mobo does NOT have XP support, however the newer KK266-plus does.
nforce is a new chipset. it would be suicide if it didnt have athlon XP support.
Religious wars are 2 groups of people fighting over who has the best imaginary friend.