Question: Low Power (not Low Performance) Computing

[LightForce]

(Note: This is not a post about distributed computing, as it may seem at first.)

I've recently become involved in a distributed computing project, and the client currently runs on the family computer. I would really like to have the client run 24/7/365, but various factors keep this from being possible.

While thinking over this problem, I had an idea: build (or purchase) a low-power-consumption dedicated distributed computing node. My idea has gone no further because my knowledge of low-power computing is very limited. I've researched the Crusoe, and I've heard of PC/104, and that's the extent of my knowledge.

And so, I ask you all, what resources exist for learning about low-power computing, and for building low-power computers? What architectures, processors, and hardware exist, who manufactures them? What experiences have you had with low-power computers? At this point in my idea/project, I'm seeking information, advice, and guidance. Anything anyone has to offer would be greatly appreciated.

Thanks!

~~LightForce

 

[thornc]

Yap industrial computers standards like PC-104 might be your best bet. Take a look at Slot-PCs also.

But for performance you might also look into via processors... they have a sweet mobo with included processor
that has acceptable performance and low power.

Usually low power and low performance are the rule.... for instance I have here at the lab a slot-PC with
a Mobile Pentium 266MMX the whole thing only consumes around 3A at 5V...compare that with others....

 

[Turkey]

In most modern low-power applications, the processor usually isn't the biggest draw on power. Intel's 200 Mhz XScale (ARM core) draws something like 1.5W at full power. In laptops & handhelds, usually the biggest draw on battery is the screen/backlight.


The power supply is the most power-consuming device in most systems (oddly enough)... They can get up to 80% efficient if you pay through the nose for them, but most are 60% efficient at full load and somewhat lower at lower loads. So if you have a 300W PS (maximum efficiency when outputting 300W), and you have a typical PC that is drawing maybe 175W, your power supply at 50% efficiency is taking in 350W and wasting 175W. The waste occurs in the rectification from AC to DC... that's why battery power is good: it's DC from the source.

 

[Den]

Buy a notebook

 

[Shalmanese]

Originally posted by: thornc

Usually low power and low performance are the rule.... for instance I have here at the lab a slot-PC with
a Mobile Pentium 266MMX the whole thing only consumes around 3A at 5V...compare that with others....

My P3-M 933 Notebook consumes less that that! while running idle, it uses up about 10W and 15 in moderate use. Thats with a screen and ATI Radeon and everything.