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Use a core as a modem?
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Forum Regular
Join Date: Sep 2003
Location: UK
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I posted a question some time ago when I wondered why we need a seperate modem when perhaps the CPU could do the job of the modem.
I was informed that the computer would be so slow when it did its' modem thing that it would be difficult to use.
I doubt my MBP uses both cores much at all and I wonder if one of them could be used to do the job of a modem?
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Clinically Insane
Join Date: Oct 2000
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No. That makes just about zero sense. You'd be essentially wasting a core that way, even if it were possible. If you don't think your MBP makes use of both cores, then open up Activity Monitor (/Applications/Utilites/Activity Monitor) and take a look the CPU usage graphs. Besides, recent Apple "modems" are mostly software modems anyway, if my understanding is correct.
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Forum Regular
Join Date: Sep 2003
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Does the activity monitor inform how many cores are in use? I note no softwrae modem in my or any other system I have seen. All have a hardware modems.
I think that in 4 and 8 core systems throwing a core for modem use is a great idea that only modem manufactures would worry about , c'mon think about it more deeply , I am correct. 
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Clinically Insane
Join Date: Jul 2005
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Why on earth would you want to put your outlying security barrier inside your machine?
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Been inclined to wander... off the beaten track.
That's where there's thunder... and the wind shouts back.
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Clinically Insane
Join Date: Oct 2000
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Originally Posted by apollo11
Does the activity monitor inform how many cores are in use?
Yes.
I note no softwrae modem in my or any other system I have seen. All have a hardware modems. I think that in 4 and 8 core systems throwing a core for modem use is a great idea that only modem manufactures would worry about , c'mon think about it more deeply , I am correct.
When I say software modem, I mean that while there's some hardware circuitry to support the modem, it's mostly based in the OS. And I doubt the software used to power a modem would take at most a few percentage points of a modern CPU core's time, let alone the entire thing.
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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Moderator 
Join Date: May 2001
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I got my first WLAN router for not even 20 €. Why would I want to save 3 € and make the proper operation of my network dependent on my main machine?
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I don't suffer from insanity, I enjoy every minute of it.
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Clinically Insane
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€3 ? €3 ? You can't even buy a penny chew for €3 these days!

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Been inclined to wander... off the beaten track.
That's where there's thunder... and the wind shouts back.
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Addicted to MacNN
Join Date: Dec 1999
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Are we talking about 56kbaud modems here?
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Clinically Insane
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Mac Elite
Join Date: Mar 2003
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Originally Posted by apollo11
Does the activity monitor inform how many cores are in use? I note no softwrae modem in my or any other system I have seen. All have a hardware modems.
I think that in 4 and 8 core systems throwing a core for modem use is a great idea that only modem manufactures would worry about , c'mon think about it more deeply , I am correct.
WTF? You would want to swap out a CPU core to use it as a modem?? A modem costs about $15, a core costs a heck of a lot more than that. Aside from the obvious fact that the core is way to powerful to use as just a stupid modem (which is generally software based anyway and already uses your CPU to do its work).
Worst idea ever.
Maybe this is a joke? 
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Posting Junkie
Join Date: May 2001
Location: Portland, OR
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Because the processor for your modem/ethernet card is far cheaper than your CPU's core.
Why tie up a $200 core to do the job of a $3 processor?
(Last edited by goMac; Oct 11, 2008 at 01:28 AM.
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8 Core 2.8 ghz Mac Pro/GF8800/2 23" Cinema Displays, 3.06 ghz Macbook Pro
Once you wanted revolution, now you're the institution, how's it feel to be the man?
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Clinically Insane
Join Date: Oct 2001
Location: San Diego, CA, USA
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Originally Posted by goMac
Because the processor for your modem/ethernet card is far cheap than your CPU's core.
Why tie up a $200 core to do the job of a $3 processor?
This.
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Chuck
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"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
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Moderator 
Join Date: May 2001
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Originally Posted by Doofy
€3 ? €3 ? You can't even buy a penny chew for €3 these days!
But still, it's like 10 dollars, isn't it? 
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I don't suffer from insanity, I enjoy every minute of it.
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Admin Emeritus 
Join Date: Oct 1999
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But, um... in both the Mac and PC worlds, standard dialup modems for years and years now have been "soft" modems with only minimal hardware. Pure hardware modems are now rare, expensive, external-only beasts. Same with ethernet cards, you have to spend [a lot] extra for fully-hardware cards.
Soft modems were feasible with 66MHz CPUs. The CPU load on today's processors is trivial. But it's usually not quite as well-performing as a hardware modem. It would never tie up a whole CPU, the modem signal processing is simply a CPU task like any other.
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