W/O further testing I'm thinking Either the Power Supply is going bad or I have a bad motherboard. What-ever is causing that sff's high motherboard temperature can't be blamed on the CPU! and it can't be 'explained' away as being high merely because it's a "sff"! Not 'wide open' like that! Something is wrong with that sff! That "chip" (Intel NH82801IB) alone could have (and probably was!) heating up the whole motherboard! The computer was operating with all hatches spread wide open - the dvd rocked forward the power supply rocked backwards and with the lid off! The dc5800 MT's have the exact same chip! - Right now, I'm on the dc5800 MT (all buckled up) and the 95Watt TDP Q9300 is running 41C (remember - the E8400 3GHz it replaced was only 65Watt TDP! the Q9300 using ~50% more "heat producing" Watts! The Motherboard of the MT is now only running 36C. Why did I recognize this temperature as a noteworthy 'event'? Intel's spec page on the Southbridge Chipset, Paul I'm not going to touch your commenting on your level of knowledge. Intel rates the I/O Controller: NH82801IB as having a TDP of 4.3Watts with a Tcase of 96C (!!!) - Is this correct? I'm amazed it doesn't have a heatsink! What are your thoughts? I believe because the noise was being amplified via a hard to hard contact with the enclosure, in that tight knit sff configuration. With no thermal coupling (e.g., 'grease') the temperature was measuring over 40C and the Power Supply was making a "morse-code" kind of noise - I isolated the noise to the power supply because when I rocked it upward 'out-of-the-bay' the noise dissappeared. I had a digital temp monitor about 1/2 the size of a pack of cigarettes and just set it atop the Intel Southbridge I/O Controller (Intel 82801IB SLA9M). I was curious as to the source of the motherboard's elevated temperature, as I've always correlated the motherboard's temp with the CPU being run and the accompanied heatsink/fan. The Motherboard, on the other hand, was running in the mid to upper 40'sC (~46C +4 -2C), fluctuating with the demands of the software running - while the CPU's temp was very stable (~32C +/-: 1-2C). The CPU was running sweetly (as I had expected) at around 30C. On my older computers you usually get only one temp (or None, if you go back to 2005 or earlier!). One thing that caught my attemtion while I had the sff running (w/o the bonnet) and with Piriform's, "SPECCY" running was having both a CPU temp and motherboard temp available to monitor. I put that project on "HOLD" until I get a book on Win 7(!) - all of the stuff I'm used to finding with XP has either moved, been renamed or deleted from Win 7 and I need to work with it when I have a little more time. I got her fired up after receiving it (offline - always - until I've had a chance to tweak Security, etc.) - I had removed the 2.4 GHz E6400 and put the 3.0GHz E8400 I pulled (when I bought the Q9300 for the dc5800 MT) and 2 sticks of 2 Gig 800MHz Memory. While you're on the subject (dc5800sff) I had a little experience I'd appreciate your comments on: The dc5800sff I had purchased recently (with the Win 7 Home Premium & restore disk to jog your memory).
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