[GeoStL] Re: NGR: SD vs CF speeds
- From: "BottomFeeder" <BottomFeeder@xxxxxxxxxxxxxx>
- To: <geocaching@xxxxxxxxxxxxx>
- Date: Tue, 30 Dec 2003 19:13:31 -0600
-
-= Russ =-
> -----Original Message-----
> From: geocaching-bounce@xxxxxxxxxxxxx
> [mailto:geocaching-bounce@xxxxxxxxxxxxx] On Behalf Of Chris Binder
>
> -
> I dunno if that person knows what they're talking about.
Could be....could be.
But it could also be the guy on Aximsite doesn't have a clue.
I mean, if he thinks using CF cards in a digital camera (one of their first
significant uses) is 'basically general storage', then I do have to question
his knowledge. The ability to write data to the card *quickly* for that
purpose is very important. Ya just can't take another pic until the last one
is written to the card (or at least such was the case 'back in the
day'....these days, most if not all digicams have a buffer that allows at
least some data to be stored until it's written to the card).
Ask yourself.....
How many I/O devices do you see in SD format? Things like GPS cards, modems,
etc. How many digital cameras come with SD slots? Not many. There are a
*few*, but at this point few and far between. By contrast, there are a quite
of few of these type devices available in SD format.
But go back and read the response I quoted. The truly operative phrase in
that was that all ppc's only support 1-bit speeds anyway. If that's true,
then the speed of the card is almost irrelevant, no?
It sounds to me like you just got unlucky with your first CF card. If you
bounce around the 'Net enough, you'll run across all sorts of reports of
some brands of either format working better with some brands of pda's (or
digital cameras) than others, some brands of either format just seem to have
a higher failure rate in general...yada yada Yoda.
Russ (BottomFeeder)
> "CompactFlash was initially made for photos, documents, and
> notes. Basically general storage. The Ultra (10x) cards can
> play music. SecureDigital cards were initally made for music
> and fast transfers. I hope that answers your question."
>
> FWIW, I bought a SD card, and it plays music just fine. It's
> even better than the internal storage on my dell axim. I
> tried the C/F card again, and it doesn't want to play music
> back anymore. So, I'm just using that for documents and
> programs and the SD card will be used for music.
>
> ~Chris
>
>
> ----- Original Message -----
> From: "BottomFeeder" <BottomFeeder@xxxxxxxxxxxxxx>
> To: "Geocaching List" <geocaching@xxxxxxxxxxxxx>
> Sent: Tuesday, December 30, 2003 7:20 AM
> Subject: [GeoStL] NGR: SD vs CF speeds
>
>
> -
> FWIW, I was curious about the question of expansion card
> speeds discussed a couple days ago, and as I had no clue
> myself about the potential speeds of either, I posted a
> question in a forum on one of my fave pocketpc sites. The
> following is the response I received.......
>
> "I understand that SD is 1bit interface and CF is 4bit
> interface, therefore CF is still faster than SD. however
> Panasonic's SD is the only SD that is 4bit hence the 10mbps.
> the rest are still 2mbps. all PPCs only support 1bit at the moment."
>
>
> -= Russ =- (BottomFeeder)
>
>
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