I think this will help out anyone looking to build a fanless system...
Thinking Small: New Intel Architecture Champions Sub 1 Watt x86
Its called the Intel Atom processor.
There's currently two versions being mentioned.
"Silverthorne" => Mobile Internet Devices
"Diamondville" => Low cost desktop and notebooks (eg: EeePC)
They're an in-order execution CPU (like VIA's C3/C7), but offer performance within the realm of the original Pentium-M ("Banias") series. Its very likely to be a tad slower. Diamondville will come in dual-core form and marketed as Celeron 3xx series.
The one we should be looking at, is the dual-core one. Said to have a TDP of 8W.
I suspect they will arrive in the form of Mini-ITX motherboards, replacing the current D201GLY and D201GLY2 solutions.
Now, back to the topic.
I think I should define my problem more clearly, as my original post was not specific enough.
My problem is really to do with a 24/7 PC used for surfin the web, email, P2P, viewing videos, etc. Just typical desktop stuff.
The OS I'm using is Debian Linux. (Which means I can trim the fat and keep things nice and light as possible).
The PC I currently use now has:
* Sempron 2800+ (Socket 754, AMD64 capable)
* Video card is a GF7300GT (AGP-based, Inno3D brand)
* NF3 250Gb chipset motherboard (Abit brand)
* Hard disk is a Seagate 7200.10 of 320GB capacity.
* Sound is onboard one.
* DVD-burner is a Sony one.
* Case is a cheapo AOpen KF45
* Power supply is an Antec TruePower 430W
The cooling arrangement?
* Video card is cooled by default cooler.
* Hard disk is kept cool by using a Zalman ZM-2HC2 heatpipe solution. As well, I have one of those 5.25" HDD coolers that consist of a dust filter intake and three 40mm fans. I removed the 40mm fans, and it is more like a intake vent.
* CPU is cooled by Zalman CNPS7000B-AlCu
(Fan speed is controlled by Zalman FAN MATE 2 on the back)
* Obviously, PSU has its own fan.
* The system cooling is provided by cutting a hole on the side panel near the CPU and video card area. The fan used is a 120mm Panaflo (low speed) and this is attached to a Zalman FAN MATE 2.
The 120mm fan is pulling air out of the case. (exhaust fan).
As a result, the negative pressure causes the air to suck into the case. By expressly using dust filters in the bottom front of the case and the 5.25 drive bay (dust filtered vent), it will naturally draw cool air from outside those areas. (I have used masking tape to seal holes and such for optimal cooling performance).
Sources of noise?
* 120mm case fan
* Default video card cooler (You can see how its laid out in the link)
http://www.inno3d.com/products/graphic_ ... 7300gt.htm
* CPU cooler