I have just installed my h2o cooling system. My fulload temp is about 27c with seti loaded.
system specs .
duron 800@1000(133), 1.92v ( 1.85 in bios)
kt7a-r , 512mb kingmax pc150, yadda yadday yadda...
cooling:
homemade crossdrilled copperblock with big channels.
hayden tranny radiator ( the biglow pressure drop model from rad test)
eheim 1048.
all this is linked together with nice silicone hose