what are you using to monitor your cpu temps on the 650?

all speedfan will do for me is report cpu and scsi drive temps.  nothing about the fans is reported

oh, i never got speedfan to work with my motherboard - precision 670. that's why i was curious.

speedfan

mbm5 (motherboard monitor) and everest can provide some useful info but not cpu temp/fan speeds. i have temp monitors on my cpus. the second cpu always runs hotter than the first in all circumstances.

I think that is because the DELL OEM motherboards are ripped of the CPU and FAN monitoring, all the DELL's I have had over the years can only report HDD Temps.

 

I've checked everything mechanical - fans and heatsinks and thermal paste carefully.

I installed a pair of 3.2 SL7AE xeons with the same result (turning hyperthreading on increased idle temp)

my xeons are 3.6mhz, with hyperthreading enabled. the first processor idles at 31c and the other is at 36-37C though it has gone up to low 40's.

there used to be a demo on intel's site for hyperthreading but it's missing at the moment. it is probably because the processors are handling more data in a somewhat parrallel fashion, 2 data threads per core (hyperthreaded) versus only one. ie. they are working harder so are heating up accordingly. it is logical to think the p4 hyperthreaded processors would exhibit the same behavior though i have not checked any of ours.

i did check the thermal specs at intel at one time and these processors have a thermal rating of 70 or 71c, i forget which.

i personally get a bit worked up with any component creeping into the 60's on any of the systems i have here. i have not seen the 650 case, but i'm certain it is not really different from the 670? my 670 had a place for an 80mm fan that snapped into a black housing right on the floor in front as you open the door. my case had relatively poor cooling overall. by simply adding this 80mm fan the ambient temps and components dropped up to 10c and i have been much happier.

do you have the place for another case fan?