Moving from a 2.4GHz iMac to a 2.66GHz iMac... much difference?

Hi Guys,
I am selling my previous-gen iMac 2.4GHz and upgrading to the current 2.66GHz version. Might seem crazy, but the actual reason for the upgrade is so I can fit 8GB of RAM into it (once the new 4GB sticks of RAM are just a BIT cheaper!!!)...
But I'm wondering, will I get better performance from this than my current 2.4GHz machine? I'm sure it will be a little better, but will there be a big difference? The RAM is faster RAM (DDR3) than on my current computer too, will this help for AU instruments like BFD?
I can hopefully do this change for just a few hundred dollars (AU), so it seems to be a good time to go for it. Do you guys agree?
If I don't switch now, but leave it a few years, my current iMac will be worth nothing and it will be too expensive to make a switch up to an 8GB RAM compatible machine...
Thoughts?
Cheers,
Mike

Hi There,
Yeah, I thought that the performance difference might not be that huge.
I am finding the BFD2 splutters when I am recording drums in real time when there are already a lot of other tracks playing. I assume that RAM would be the main cause of this problem, so having the option of getting 8GB further down the track would have to be a good thing... am I right?
Any other advice or thoughts?
A Mac Pro (alas) is out of budget for me...
Cheers,
Mike

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If you are not able to use a Firewire connection (for example you have a Late 2008 MacBook that only supports USB:)
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2. If you have a MacBook Air or Late 2008 MacBook see the following: >MacBook (13-inch, Aluminum, Late 2008) and MacBook Pro (15-inch, Late 2008)- Migration Tips and Tricks:
MacBook (13-inch, Aluminum, Late 2008) and MacBook Pro (15-inch, Late 2008)- What to do if migration is unsuccessful; MacBook Air- Migration Tips and Tricks; MacBook Air- Remote Disc, Migration, or Remote Install Mac OS X and wireless 802.11n networks.
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In your /Home/ folder: Documents, Movies, Music, Pictures, and Sites folders.
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If you want cookies:
/Home/Library/Cookies/Cookies.plist /Home/Library/Application Support/WebFoundation/HTTPCookies.plist
For Entourage users:
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Credit goes to Macjack for this information.
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5. Once you have transferred what you need restart the new Mac and test to make sure the contents are there for each of the applications.
Written by Kappy with additional contributions from a brody.Revised 4/17/2011

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Migration Assistant is not a general file moving tool. MA will migrate your Applications and Home folders transferring only your third-party applications. MA will transfer any application support folders required by your applications, your preferences, and network setup. You do not have a choice of what will be migrated other than the above. MA cannot determine whether anything transferred is compatible with Snow Leopard. I recommend you look at the following:
A Basic Guide for Migrating to Intel-Macs
If you are migrating a PowerPC system (G3, G4, or G5) to an Intel-Mac be careful what you migrate. Keep in mind that some items that may get transferred will not work on Intel machines and may end up causing your computer's operating system to malfunction.
Rosetta supports "software that runs on the PowerPC G3, G4, or G5 processor that are built for Mac OS X". This excludes the items that are not universal binaries or simply will not work in Rosetta:
Classic Environment, and subsequently any Mac OS 9 or earlier applications
Screensavers written for the PowerPC
System Preference add-ons
All Unsanity Haxies
Browser and other plug-ins
Contextual Menu Items
Applications which specifically require the PowerPC G5
Kernel extensions
Java applications with JNI (PowerPC) libraries
See also What Can Be Translated by Rosetta.
In addition to the above you could also have problems with migrated cache files and/or cache files containing code that is incompatible.
If you migrate a user folder that contains any of these items, you may find that your Intel-Mac is malfunctioning. It would be wise to take care when migrating your systems from a PowerPC platform to an Intel-Mac platform to assure that you do not migrate these incompatible items.
If you have problems with applications not working, then completely uninstall said application and reinstall it from scratch. Take great care with Java applications and Java-based Peer-to-Peer applications. Many Java apps will not work on Intel-Macs as they are currently compiled. As of this time Limewire, Cabos, and Acquisition are available as universal binaries. Do not install browser plug-ins such as Flash or Shockwave from downloaded installers unless they are universal binaries. The version of OS X installed on your Intel-Mac comes with special compatible versions of Flash and Shockwave plug-ins for use with your browser.
The same problem will exist for any hardware drivers such as mouse software unless the drivers have been compiled as universal binaries. For third-party mice the current choices are USB Overdrive or SteerMouse. Contact the developer or manufacturer of your third-party mouse software to find out when a universal binary version will be available.
Also be careful with some backup utilities and third-party disk repair utilities. Disk Warrior 4.1, TechTool Pro 4.6.1, SuperDuper 2.5, and Drive Genius 2.0.2 work properly on Intel-Macs with Leopard. The same caution may apply to the many "maintenance" utilities that have not yet been converted to universal binaries. Leopard Cache Cleaner, Onyx, TinkerTool System, and Cocktail are now compatible with Leopard.
Before migrating or installing software on your Intel-Mac check MacFixit's Rosetta Compatibility Index.
Additional links that will be helpful to new Intel-Mac users:
Intel In Macs
Apple Guide to Universal Applications
MacInTouch List of Compatible Universal Binaries
MacInTouch List of Rosetta Compatible Applications
MacUpdate List of Intel-Compatible Software
Transferring data with Setup Assistant - Migration Assistant FAQ
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will work better when moving from PowerPC to Intel Macs. The initial section below discusses Target Disk Mode. It is then followed by a section which discusses networking with Macs that lack Firewire.
If both computers support the use of Firewire then you can use the following instructions:
1. Repair the hard drive and permissions using Disk Utility.
2. Backup your data. This is vitally important in case you make a mistake or there's some other problem.
3. Connect a Firewire cable between your old Mac and your new Intel Mac.
4. Startup your old Mac in Target Disk Mode.
5. Startup your new Mac for the first time, go through the setup and registration screens, but do NOT migrate data over. Get to your desktop on the new Mac without migrating any new data over.
If you are not able to use a Firewire connection (for example you have a Late 2008 MacBook that only supports USB:)
1. Set up a local home network: Creating a small Ethernet Network.
2. If you have a MacBook Air or Late 2008 MacBook see the following:
MacBook (13-inch, Aluminum, Late 2008) and MacBook Pro (15-inch, Late 2008)- Migration Tips and Tricks;
MacBook (13-inch, Aluminum, Late 2008) and MacBook Pro (15-inch, Late 2008)- What to do if migration is unsuccessful;
MacBook Air- Migration Tips and Tricks;
MacBook Air- Remote Disc, Migration, or Remote Install Mac OS X and wireless 802.11n networks.
Copy the following items from your old Mac to the new Mac:
In your /Home/ folder: Documents, Movies, Music, Pictures, and Sites folders.
In your /Home/Library/ folder:
/Home/Library/Application Support/AddressBook (copy the whole folder)
/Home/Library/Application Support/iCal (copy the whole folder)
Also in /Home/Library/Application Support (copy whatever else you need including folders for any third-party applications)
/Home/Library/Keychains (copy the whole folder)
/Home/Library/Mail (copy the whole folder)
/Home/Library/Preferences/ (copy the whole folder)
/Home /Library/Calendars (copy the whole folder)
/Home /Library/iTunes (copy the whole folder)
/Home /Library/Safari (copy the whole folder)
If you want cookies:
/Home/Library/Cookies/Cookies.plist
/Home/Library/Application Support/WebFoundation/HTTPCookies.plist
For Entourage users:
Entourage is in /Home/Documents/Microsoft User Data
Also in /Home/Library/Preferences/Microsoft
Credit goes to Macjack for this information.
If you need to transfer data for other applications please ask the vendor or ask in the Discussions where specific applications store their data.
5. Once you have transferred what you need restart the new Mac and test to make sure the contents are there for each of the applications.
Written by Kappy with additional contributions from a brody.
Revised 1/6/2009
In general you are better off reinstalling any third-party software that is PPC-only. Otherwise update your software so it's compatible with Snow Leopard.
Do not transfer any OS 9 software because it's unsupported. You can transfer documents you want to keep.
Buy an external hard drive to use for backup.

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Moving from a 2.4GHz iMac to a 2.66GHz iMac... much difference?

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