Originally posted by: SickBeast
I'm pretty sure the Atom uses 4w under load, and the chipset uses 4w as well.
People have always complained about the default Atom 945 chipset, saying that it uses as much or more power than the CPU which makes no sense.
I was under the impression that intel would release a proper chipset, but they never did,
Intel designed a proper chipset for the Atom called Poulsbo.
Poulsbo: An Unusually Revolutionary Chipset
Highlights:
fewer USB ports
2 channel HD audio
no SATA ports
proprietary low voltage DDR2 RAM
zero legacy interfaces (besides EIDE)
130nm process
Doesn't look that great for a mini ITX board or a netbook, but is probably okay for its intended market, MIDs (mobile internet devices), which are between a cell phone and netbook in size.
The 945GC chipset variant that is usually with an Atom uses more power than the CPU itself. This is plainly evident from the Intel mini ITX boards that use a tiny passive heatsink for the CPU and a bigger fan-cooled heatsink for the chipset. Can't find the numbers right now, but IIRC it was to the order of 20W or something.
As for "making sense" the 945GC was designed a long time ago for desktop use and thus isn't optimized for power draw. Why it is being used with the Atom today is because it is dirt cheap.