My understanding is that the D945GCLF uses the 945GC chipset.
The B202 uses the 945GSE chipset, which is a mobile chipset with much lower power consumption.
I wish I could buy a mini-ITX board with that chipset!
Nevertheless, the following statement in the article appears to be in error:
More importantly, the same relatively inefficient 945G chipset, which was first used on the Mac Mini, is also used here, along with the pedestrian Intel GMA 950 video chip.
Thanks for the excellent review. Can you tell me if there is a BIOS option to power the PC back up once power is restored from a power failure? If so, I can think of several embedded applications where I may use these machines.
You're right! Bad miss. Not sure why I was so blind about that. In any case, thanks for the catch. I've made a number of changes here and there to reflect this info. For those who've already read the whole piece and don't want to scour just for the changes...
The basic technology inside is essentially the same as what Intel put into its Atom-based mini-ITX board, the D945GCLF which we reviewed last week. The CPU is a mobile variant, although how much less power that would draw is questionable, as the "desktop" Atom 230 maxes out at 4W. The Intel board uses the relatively inefficient 945GC chipset, which was first used on the Mac Mini. Apparently, the chipset in the Eee Box is the 945GSE Express, designed for mobile PCs, but still equipped with the same Intel GMA 950 video chip. Being a mobile chipset, the 945GSE Express may have lower power requirements than the 945GC, which is promising.
The Eee Box idled at just 16W. It drew 6W more when running two instances of Prime95 or playing hi def video clips. Power consumption increased to 25W when the IGP was stressed with ATITool while Prime95 was running.
These numbers are very modest, especially in comparison to those obtained with the Intel D945GCLF mini-ITX board reviewed last week. That system drew 27W in idle, 31~33W playing video, and 28W at full tilt; all this with a PSU that's one of the most efficient we've tested at low loads. That the Eee Box lowers power consumption by over 10W at all states is excellent. What these numbers suggest is that the 945GSE Express chipset used in the Eee Box is considerably more efficient than the 945GC of the Intel mini-ITX board.
A summary page at Intel of the 945GSE Mobile Express chipset states that the maximum TDP of the chipset itself is just 6W. On the same page, under the heading "Valid Processor Combinations", one combination is listed: The Atom N270 and 945GSE Express Chipset with 82801GBM I/O Controller Hub (ICH7M), with a "System TDP" of just 11.8W. This explains why the Eee Box is so much more energy efficient than the Intel D945GCLF.
It even suggests that there may be room for further reduction of power with a more efficient AC/DC adapter: If the total TDP of the system is only 11.8W, and the AC power measured is 25W, then the power supply is working at less than 50% efficiency. Alas, it may not be quite so simple. The PSU is also supplying power for the wifi and the hard drive, and perhaps a bit to the USB keyboard and mouse as well.