24"iMac....adding second monitor...... mirror or extended desktop?

I have a new 24 inch aluminum iMac.
I also have a year old 23 inch Apple Cinema display that I was thinking of adding as a second display.
If I did, would that mirror my existing display, or would it allow me to extend the desktop that I already have?
I would like to extend the desktop. If I could do that, what connector would I need to get to make that happen?
Thanks for the help and advice.

You will be able to choose mirroring or extended desktop in the "Arrangement" tab of "Displays" system preference.
You will need a Mini-DVI to DVI adapter
<http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=E5 EF5328&fnode=home/shopmac/macaccessories/displays&nplm=M9321G/B>
If the display is the old 23" with the plastic case and ADC, you will also need a DVI to ADC adapter
<http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=64 1148B1&fnode=home/shopmac/macaccessories/displays&nplm=M8661LL/B>

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Can i use my imac as second monitor for my pc / notebook

Can i use my imac as second monitor for my pc / notebook

Without any knowledge of the year machines you have it's impossible to answer that question. iMacs adn MBA's have been around for many years now so we have no idea of the exact specs your machine have. Remember when posting you need to be complete and paint a picture for us as we aren't there to look for ourselves. Your question should be posted something like:
" I have a 2011 27" iMac and a 2009 MacBook Air, can I use the iMac as an external display for my MacBook Air?"
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http://support.apple.com/kb/HT3924
http://support.apple.com/kb/TS3775

Use imac as second monitor

I understand this can be done in some previous generations, and am just not sure whether it works in my situation.
I have a MacBook Pro (2009) and a brand new iMac 27" (2011). It seems that MBP has a mini displayport and iMac has 2 thunderbolt ports. I am curious whether I can use iMac as second monitor for my MBP. If possible, which cable should I use, a mini displayport-to-mini displayport cable from Belkin or thunderbolt-to-thunderbolt cable from Apple.

You can't except through a product such as ScreenRecycler. The iMac's Thunderbolt port won't accept video from a non-Thunderbolt source.
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I have a 27 iMac and a 24 iMac.
Can I, and how do I, go about using the 24 iMac as second monitor?

Niel, forgive my ignorance, I am trying to wrap my mind around this.
I have a 2009 24-inch, and a 2010 27-inch. The easiest solution would be to run male to male mini display cable between both machines and use the 24, with the 27 as the second monitor.
However, if it is not too much hassle, the opposite could be better.
To use the 27 and have the 24 as the second monitor, you say I would have to "set up a network".
Is that merely running a cable, or what exactly is involved?
And, after setting up a network, I would use the ScreenSaver application.
Presuming that I was successful in setting up and running the 27 via this method, would the ultimate result be slower than running the 27 as the second monitor?
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I've found a solution to my problem!
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Message was edited by: gobbles414 (original)

Using External Display WITHOUT mirroring or extended desktop

I asked this question about a month ago and it seems to have been deleted for some reason.
I have a broken screen on my Intel iMac G5 for reasons I don't wanna get into here, but trust me, it's not covered under the warranty. I have a great Sony LCD HD Monitor plugged in by VGA and mirroring displays. I have noticed that the computer is a LOT slower since connecting the alternate display, and I think it's because processing the smae information on both displays at once is using up too much system resources. I DON'T want an extended desktop either, since the iMac screen is broken.
Is there a way to turn off the iMac screen completely and ONLY use the external monitor WITHOUT mirroring or extended desktop?
If not, how can I improve my machine's performance while mirroring displays? Is more RAM the answer?

Hello howoriginal
Let me see
1) OK sounds like the Sony is working for you in mirroring.
2) Which iMac do you have Intel or G-5? (Intel's are not G-5s)
3) Don't think you'll be able to turn off the iMac display. (you know I want to ask)
4) Mirroring should not realy affect your performance. Keeping everything "gathered" up to Sony display might help you from misplacing windows and folders.
5) If it's an early Intel Core Duo with 512MB then "yes" more ram to 1, 1.5 or 2GB will boost your performance.
6) Other thing to help performance are OnyX maintenance and quitting App's from menu, not just closing App's with red button that you are not using.
That's all I have for now!
Dennis
17" iMac Intel Core Duo 1.5GB Ram Mac OS X (10.4.8) Maxtor 300GB FireWire 2G Nano

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24"iMac....adding second monitor...... mirror or extended desktop?

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