I am looking for any feedback on what the different power consumption of a
Cardbus (32bit), PCMCIA (PC Card, 16bit) or USB 2.0 Compact Flash Card
Reader would be. I will be using it in a Dell Insiron 700m, mainly on
battery power, so power consumption is important.

There's not much inherint difference simply because of the type of card.
But there are substantial model-to-model differences, so you really
just need to compare the specific cards that you are considering. The
newer cards are likely to be cardbus, and also to have lower power
consumption, but because they are newer, not because they are cardbus.


PlaneGuy wrote:

must then control all its data flow. More load means more heat and
less run time. Not to mention that USB + netorking = Trouble.

PlaneGuy wrote:
I doubt if Cardbus ones exist ... isn't CF a 5V-supplied format ? If so,
a cardbus adapter wouldn't have a way of powering it ...

The PCMCIA adapters work very well ... nice and simple ATA i/f, so no
messy layers of device drivers.


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I am not a marketing target ... I am a free man.

Martin Slaney <slaz@dsl.NIET_SPAMpipex.com> wrote in
news:deSdnQjuTPCyVgPcRVnyhw@pipex.net:

From CardBus white paper (at www.pcmcia.org):
"A CardBus interface can support card operation at either 5v or 3.3v. The
adapter includes a standard method for determining the card's power needs
following card attachment. Both CardBus cards and "low-voltage" PC Card-16
cards operate at 3.3v. In addition, the CardBus standard has made
allowances for the support of two progressively lower voltages, "X.Xv" and
"Y.Yv", in the future. This will facilitate the construction of even lower-
voltage CardBus cards as required by lower-voltage future platforms."

So it capable of supporting 5v power.

Alexei

The pcmcia site is absolutely clear (thanks alexei), but just to reinforce,
here is a link to a Cardbis CF adaptor
http://www.delkin.com/store/customer...164&cat=&page=

Andrew,

the reason I am asking is that someone had mentioned the PCMCIA card
readers, require one hundred percent CPU resources - something I didn't
quite believe. I am aware that USB requires system resources, but do you, or
anybody else, know how much system resource a PCMCIA will have?

"AndrewJ" <andrewjbbrREMOVE@gmail.com> wrote in message
news:u9btp0h3qee3g5kck9ifh3sc3ao2tpttjq@4ax.com...

Alexei Boukirev wrote:

Oh - I stand corrected ....

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I am not a marketing target ... I am a free man.