HT1338 Can I upgrade my Intel Xeon MAC PRO running OS X 10.4.11 to 10.5.8?

Can I upgrade my Intel Xeon MAC PRO running OS X 10.4.11 to 10.5.8?

Yes. You can actually upgrade it all the way to Lion should you so wish, although you would need to first purchase and install Snow Leopard 10.6.8.
I would skip Leopard as it's more expensive and obsolete. You can purchase a Snow Leopard DVD at any Apple retailer - $29.00. You can update it by downloading Mac OS X 10.6.8 Update Combo v1.1. The use the App Store to purchase and download Lion should you choose to do so - $30.00.
I would consider expanding your RAM to at least 4 GBs or more especially if you decide to upgrade to Lion. Before upgrading see the following:
How to Install OS X Updates Successfully
A. Repair the Hard Drive and Permissions:
Boot from your current OS X Installer disc. After the installer loads select your language and click on the Continue button. Then select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger) and/or TechTool Pro (4.5.2 for Tiger) to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
B. Make a Bootable Backup Using Restore Option of Disk Utility:
Open Disk Utility from the Utilities folder.
Select the destination volume from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the destination volume from the left side list and drag it to the Destination entry field.
Select the source volume from the left side list and drag it to the Source entry field.
Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
C. Important: Please read before installing:
If you have a FireWire hard drive connected, disconnect it before installing the update unless you will boot from this drive and install the update on it. Reconnect it and turn it back on after installation is complete and you've restarted.
You may experience unexpected results if you have installed third-party system software modifications, or if you have modified the operating system through other means. (This does not apply to normal application software installation.)
The installation process should not be interrupted. If a power outage or other interruption occurs during installation, use the standalone installer (see below) from Apple Downloads to update. While the installation is in progress do not use the computer.
D. To upgrade:
Purchase the Snow Leopard Retail DVD.
Boot From The OS X Installer Disc:
Insert OS X Installer Disc into the optical drive.
Restart the computer.
Immediately after the chime press and hold down the "C" key.
Release the key when the spinning gear below the dark gray Apple logo appears.
Wait for installer to finish loading.
E. If updating:
Download and install update(s)
Use Software Update, or
Download standalone updater(s).

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OS for a 2007 Intel Xeon Mac Pro

I recently bought OS 10.8 from the app store for my computer described in the subject line. When I went to download it I got a message saying cannot download because it's not compatible with this computer. I have 7GB of RAM, 3TB of hard drive space, It's a dual core 3Ghz processor.
So I have 2 questions, 1.what is the most advanced OS I can use with this machine? 2. Can I get my money back from the App Store?
Thanks,
Jon

Lion is the last OS for which your computer is compatible:
Upgrading from Snow Leopard to Lion, Mountain Lion or Mavericks
To upgrade to Mavericks you must have Snow Leopard 10.6.8, Lion, or Mountain Lion installed. Purchase and download Mavericks (Free) from the App Store. Sign in using your Apple ID. The file is quite large, over 5 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mavericks- System Requirements
       Macs that can be upgraded to OS X Mavericks
         1. iMac (Mid 2007 or newer) — Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) —
             Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) — Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) — Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) — Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) — Model Identifier 3,1 or later
         7. Xserve (Early 2009) — Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Are my applications compatible?
         See App Compatibility Table — RoaringApps.
Upgrading to Lion
If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
You will have to contact Apple about a refund.
Apple Store Customer Service at 1-800-676-2775 or visit online Help for more information.
To contact product and tech support: Apple - Support - Contact Apple Support.

Could someone suggest a procedure describing how I should migrate my iTunes files from old an older Motorola-based PowerMac to a new Intel-based Mac Pro?

My problem concerns migrating, or moving my iTunes files from a Motorola-based G4 PowerMac OS X 10.4.11 iTunes 9.2.1 (4) to a new Intel-based Mac Pro running OS X 10.8.4 iTunes 11.0.4.
Context Summary:
1. Migration assistants on my old and new macs are not compatible.
2. My older mac has my iTunes library stored on an external firewire disk.
3. Part (but not all) of my iTunes files are also resident/stored on my iPod classic.
4. Finally, I need OS X 10.4.11 on my old mac and cannot upgrade it to OS X10.5.
Proposed method A: Is there a way to transfer my playlists from my Motorola Mac to my Intel Mac? If so, could I then connect my external firewire disk (containing my iTunes library) to my new mac, and then tell iTunes (on new mac) to use my iTunes library located on my external firewire disk?
Proposed method B: Would my chances for success improve if I used my iPod classic to transfer iTunes files from old Mac to new?
Worst Case Proposal C: I could start from scratch and recreate iTunes playlists and library on new mac.... time consuming proposal but it's possible. (Please don't suggest this proposal unless no other viable choices exist for me.)
Or have I missed something? Is there another procedure I should use?
Please advise, and thank you.

Hello Chris,
Answer to your iTunes library question: By iTunes Library, I mean my iTunes Media folder only; not the entire /iTunes/folder with iTunes media folder inside.
BTW: Your pointer to ht4889 was very helpful, and sharing the folder, then copying it over firewire interface from old to new mac was most useful.
However, now with my entire iTunes folder (including iTunes media folder) moved to new mac, I remain unclear as to how I should configure iTunes on the new mac so that it can know about and use these copied files. I understand using iTunes preferences, how to point iTunes to my media folder, but don't know what other iTunes operations are necessary for iTunes to pick up where I left off with my old mac.
Is there any file conversion necessary?
Or inside iTunes, should I:
File->Library->Organize Library? or
File->Library->Export Library? or
File->Library->Import Playlist?
Please advise and thank you again for your help.
As you might imagine, I put a great deal of time building my iTunes library, and would feel very blue if I need to build it again from scratch on my new mac.
So long for now.

I was running remote desktop on my old mac pro running 10.4.11. Upgraded to new pro running 10.6.7 Can I get remote desktop to run on new computer?

I was running remote desktop on my old mac pro running 10.4.11 Just upgraded to new pro running 10.6.7 Can I get my previous remote desktop to
run on new computer?
Thanks

Are you talking Apple's Remote Desktop software, or Microsoft's?

Can I upgrade from Adobe Acrobat 9 Pro for Windows to Adobe Acrobat IX Pro for Mac?

Hello,
I have a question concerning Upgrades:
Can I upgrade from Adobe Acrobat 9 Pro for Windows to Adobe Acrobat IX Pro for Mac?

Hi Christian ,
I am not sure if you are eligible to upgrade from Adobe Acrobat 9 Pro for Windows to Adobe Acrobat IX Pro for Mac as this is an older version of Acrobat.
Refer this link to connect with the chat support team ,they will assist you further with the same.
https://helpx.adobe.com/adobe-connect/kb/connect-chat-support.html
Regards
Sukrit Dhingra

Locked-out: "You can't upgrade this version of Mac OS X because a newer version is installed

Absolute rookie move. Bought a Mac Mini server (June 2012 model) on E-bay and it came with the previous owner's log-in account still on it. Tried to re-install 10.6 server software with the CDs that came with it but got the message "You can't upgrade this version of Mac OS X because a newer version is installed". Any advice on how I can fix this? I'm hoping I didn't buy a brick that I can't do anything with.
Any help is much appreciated.
~LJ

What OS X software is installed on the box? OS X, or OS X Server?
If it's a newer OS X version and you want OS X Server from the installer disks, wipe the disk and reinstall.
Officially, it's not likely that a recent Mac Mini Server would even officially support something as old as OS X Server 10.6; here's the list of the minimum versions (HT1159) — I don't see a June 2012 model, the closest to that acquisition date would probably be a mid-2011 Mac Mini or Mac Mini Server model, and those require OS X or OS X Server 10.7, or later.
OS X 10.7 also didn't usually arrive with DVD disks, so that may be an old DVD from some other box.
To confirm the Mac Mini model, see  > About This Mac > More Info...

"You can't upgrade this version of Mac OS X"

I have a 3 week old MacBook Pro 2.66 (4GB RAM) bought online with the Leopard 10.5.8 Operating System installed. I've tried to install Snow Leopard tonight and it gives me the message "You can't upgrade this version of Mac OS X." How can that be? I've tried the REPAIR DISK option and it says that my internal HDD is OK - in green. Yet I am unable to install the new OS. What gives?
Message was edited by: Jeff Little

Jeff,
It is possible that you are "stuck in the middle." The build of Snow Leopard resident on the DVD may actually have been "solidified" prior to the build that came with your Mac. As a result, the Snow Leopard installer doesn't "recognize" what is currently running on your Mac. Put another way, it doesn't know how to go about upgrading that installation. Yours is the first case of this that I have seen, if that is indeed what is going on here.
Regardless of the cause, you do not have to "upgrade." You can simply erase what's currently on your Mac and install Snow Leopard. You'll want to have a good Time Machine backup first, of course, and I recommend you find a suitable external drive to do so, if you haven't already.
When you do have that backup, you can boot to the Snow Leopard installer, open Disk Utility to erase the internal hard drive, install Snow Leopard, then use the "Migration Assistant" to bring your user data and account(s) back into the new installation. You probably have not had much time to accumulate a bunch of third-party apps, so having to reinstall those should be no problem. Even if you have found some that you like, keep in mind that all of our user data and settings for those apps will already be back in place, along with your HOME folder(s).
If you need further instructions to complete any of the steps I have outlined, we'll be glad to help.
Scott

Can I upgrade to intel i7

Can I upgrade to intel i7 from core 2? Both chips require the same socket.
I have a touchsmart 600XT. Would also like to upgrade to a ss hard drive. Any thoughts?

Hello
I ask the same question:
Is it possible to upgrade the processor in the 600XT?
I'd like Quad processor ....
Thanks
gidon.

I have an 27 inch apple iMac 2010. Can I upgrade by buying a Mac book pro and use plug in and use the iMac as a screen only?

I have an 27 inch apple iMac 2010. Can I upgrade by buying a Mac book pro and use plug in and use the iMac as a screen only?

Yes your 2010 supports Target Display Mode using MiniDisplay Port input.
check out FAQ #4 > Target Display Mode: Frequently Asked Questions (FAQ)

HT201364 Can I upgrade my 2010 Power Mac G 5 that has OS 10.5.8, going through Snow Leopard and then to OS X Mavericks?

Can I upgrade my current Power Mac G 5 that has OS 10.5.8 from 2010 to the current OS X Mavericks if I first install OS Snow Leopard? My computer has 1.8 Ghz, 3 GB DDR SDRAM, 2 CPU with 512 KB L2 Cache (per CPU) and 500 GB Hard Drive, about half full.

No. A G5 can't be upgraded past 10.5.8.
(104197)

Advice on upgrading to SSD for Mac Pro (optimized for AfterEffects & Photoshop)

Hello,
I'm an animator (I use AfterEffects CS5, but will be upgrading to CC soon) and I'm going to start work on a new AE project in a few months for an animated film that will be very demanding (lots of different shots -- meaning multiple projects, all of which will also incorporate large HD stock footage elements as well as multiple layers of art created in Photoshop).
So I'm looking to upgrade my current desktop Mac Pro (a 2010 2x2.66GHz 6-Core Intel Xeon) with SSD drives (and possibly a new graphics card) in order to speed up my system and optimize it for both AfterEffects and Photoshop. (In the past I've created projects using external 7200 RPM hard drives connected via eSATA). I've also decided, for now, not to purchase the new Mac Pro, but rather try and make a smaller investment to speed up my current system.
I'd love any advice that pro users would have that have made similiar upgrades, both in terms of the best equipment (SSD drives and graphics card) and the best way to set up AfterEffects/Photoshop projects using these SSDs.
For example:
1. Should I be purchasing 1 or 2 SSDs, and how should I be using these drives to optimize my system for AfterEffects and Photoshop?
2. Should I install my operating system (I'm on OS 10.8.5 but plan to upgrade to Mavericks when I upgrade to CC) on one separate SSD, and then install my Adobe applications on a 2nd SSD, or can I put both the operating system and applications on a single SSD? And should I be saving my projects on a SSD (if so, which one, if I'm supposed to purchase 2?
3. Should I assign a 2nd SSD as a scratch disk for AfterEffects or Photoshop?
4. I plan on using my current external hard drives (a 12 TB RAID array connected via eSATA) to store the footage and Photoshop elements being used in my AE projects (these files will be multiple GBs, and I can't afford to purchase SSD drives to hold these elements on) and also to store the renders from AfterEffects (which will also be very large files). Is this OK, or will this slow me down and negate whatever speed I've gained from moving to SSDs?
5. In researching how to switch over to SSD, I've considered purchasing 1 or 2 SSD drives. The one I'm currently looking at is called the Murcury Accelsior_E2, a PCI Express SSD sold via OWC. It comes in a few different sizes (120 GBs, 240 GBs, 480 GBs, 960 GBs). Just wondering if this is a good purchase -- the reviews seem to be very positive:
http://eshop.macsales.com/item/OWC/SSDPHWE2R960/
6. I'm also considering upgrading my current graphics card (ATI Radeon HD 5870) to the NVIDIA Quatro 4000 or NVIDIA Quatro 5000, but I'm wondering how much of a speed boost this would give me.
Here's an overview of my current system:
Computer: 2010 Mac Pro with 2x 2.66 GHz 6-Core Intel Xeon
Memory: 64 GB DDR3 ECC
Graphics Card: ATI Radeon HD 5870
Hard Drives (Internal): 2x 2TB Hitachi HD
Hard Drives (External): 12TB OWC Mercury Elite Pro RAID drive array (connected via eSATA)
Apologies in advance for the long message, but I've always recieved great advice from these message boards and I'd appreciate any help!
Thanks,
Dan

Thanks so much for jumping back into the discussion, The hatter! I had some earlier questions from before that I was hoping you could answer:
Currently I own a 12 TB OWC Mercury Elite Pro RAID drive array (connected via eSATA) which I use to save projects, project files, and renders. So (unless I am mistaken) you're recommending that I continue to use this RAID array to save projects, project files, and renders.
(I was looking into purchasing a Mercury Accelsior_E2 for my SSD via PCI -- it has eSATA, so I can continue to connect my RAID array)
Then I would use my new SSD via SATA II for my system, apps, and OS (minus home folder media files, data, documents) and my SSD via PCI for scratch disks for Photoshop/AfterEffects.
Currently I have 2 x 2 TB internal hard drives, which have all my OS + home folder media files.
Can I get more details in terms of the step-by-step instructions when it's time to install/clone? Here's how it looks to me (apologies if I have this out-of-order, and feel free to correct me if I've missed a step or have it wrong -- thank you in advance!):
1. Purchase SSDs (via PCI and internal SATA II) and install them inside my Mac Pro.
(Is there any formatting I need to do at this point to the SSDs once they are all plugged in...?)
2. Install TRIM Enabler
(Once it's installed, what do I do with TRIM Enabler? Is it an app that runs 24/7 in the background, or is it an app that I need to launch on a regular basis and perform commands on the SSDs...? Very confused on what TRIM Enabler does.)
3. Use CCC to clone system from old internal hard drive to new internal SSD drive. When using CCC, deselect media folders in home account before cloning (so I am NOT cloning media folders from old hard drive to new SSD drive).
(What specific media folders should I be deselecting? I'd like to keep my music, movies, iPhoto/Lightroom files, and email archive where they are now -- on the 2 x 2TB internal drives that shipped with my Mac Pro. Is there a link that provides more info on this process? Never used CCC before but I assume it's not too hard to use...?)
4. CCC clones system gets 'cloned' (minus the media folders) to the SSD that is installed via SATA II in empty internal drive bay inside Mac Pro.
5. Repair the SSD with DU after cloning and before using and booting from SSD.
(What is DU? How does it work? Not familiar with DU...?)
6. Reboot computer from system running on SSD.
7. Open Photoshop/AfterEffects (now running from SSD) and assign new scratch disk (the SSDs on PCIe SSD controller).
8. After 100% sure that system + apps that have been cloned is working via SSD, delete ONLY system and apps from old hard drive (but do not delete media files).
(Now that my system is on a separate SSD drive, when I do things like purchase new music from iTunes, will it get downloaded to the old location (my old hard drive with all my media)? In other words, are there steps I have to perform in order to relink my media folders now that they're on a separate drive?
Thanks,
Dan

Jump from 2.8 Dual Xeon Mac Pro to new 2.4GHz Macbook Pro with LED Cinema?

So about a month ago I decided to upgrade an older Macbook Pro to my dream computer... I bought the Octo 2.8GHz Xeon Mac Pro, added 1.6TB of drive space, 10GB of RAM, the Nvidia 8800 GT, and a 23" Apple Cinema Display.
I LOVE the machine. That said...
Stopped over at Apple the other day and saw the new Macbook Pro connected to the 24" LED Cinema Display. GORGEOUS. Love it. Long story short, I am considering moving back to the Macbook Pro and new ACD to go with it.
So my question is this : What kind of performance drop am I going to take if I do this? Are people really using these new MBPs as full desktop replacements? Has anyone jumped from Mac Pro to new MBP and been 100% happy?
I have found with my Mac Pro that I am NEVER stressing the machine, ever. No matter what size file I am working with, no matter what game I am playing, the thing is always fast and smooth. But while playing with the MBP (it was 2.4GHz) and new LED ACD at the Apple Store I noticed that things like Photoshop and Illustrator launched every bit as fast as on my Mac Pro - even Aperture was speedy and extremely usable! I think the dock magnification seemed a touch jerky when compared to my Mac Pro - but maybe not... can't find any real stats on it.
I normally work in Aperture and Photoshop/Illustrator, have iTunes running, iCal, Pages and Numbers, Keynote, Mail, and do just a touch of video compression every now and then (format conversion). I realize these tasks don't pose any challenges to the Mac Pro - but what about the newer MBP?
I would be ordering the MBP with 2.4GHz, upgrading the RAM to 4GB, and the HDD to a 320GB 7200RPM Seagate.
My main motivation is to be able to continue to work on the Cinema Display that I have grown to LOVE, while also becoming a bit mobile again! It IS nice to sit on the couch sometimes and web browse. It wouldn't be worth it to me to gain mobility and lose all the power though, so...
How about it? Given what I do, is the 2.4GHz MBP a suitable replacement for the Mac Pro that I have?

Thanks for reading through the small book I wrote there and adding some info to it - greatly appreciated.
I have found on the Mac Pro I am simply astounded by the way games look at 1920x1200 on 'Very High' settings! But... I also have pretty much stopped playing them. Working on the Mac Pro all day, it would be very nice to sit back on the couch if I want to play a game. Granted the PS3 I have just can't compete with the Mac Pro in quality, but it's decent enough for the small bit of games I play and the Blu Ray drive is nice too for movies. So, I'd say I'm ok losing the gaming part of the Mac Pro as the PS3 is sufficient enough and more convenient so I can actually sit back and relax.
I think you're absolutely correct on the rendering. When I work with video, I usually am converting 2-8 minute Quicktime Movies in to Flash Video format using QT Pro. The Mac Pro SCREAMS through this in 1-2 minutes, my older Macbook Pro was about 5-7 mins for the same file.
Looking back, my MBP wasn't as old as I thought (I had an iMac in between there I don't care to remember) : it was a 2.4GHz Penryn with 200GB 5400 HDD, and 2GB RAM with 256MB VRAM. So basically, the new MBP and the "old" MBP I had are very close to each other... biggest differences are the new 1066mhz front side bus and Nvidia GPU - other than that, these are identical machines!
I was never very happy working on the MBP full time - but I now know that was due to the screen size. Working on the Cinema is great and selling my current Mac Pro and Cinema and getting the new MBP and Cinema will allow me to work and be mobile, as well as put $1000 back in my pocket.
Might be nuts, but man I'd love to see some comparisons between the Mac Pro and MBP from Bare Feats or Ars. I'm definitely in the minority here - no one using Quickbooks and Photoshop as much as I do "needs" an octocore Mac Pro. But, I've got one and love it. It seems for what I'm doing the decrease in performance might be negligible, if not undetectable entirely (aside from gaming and enconding).

I can not open safari on my mac pro

i can not open safari on my mac pro. i have tried every thing i could from the support communities. also i have been trying to upgrade to mountain lion, but i could not get on app store saying the connection failed. i am getting tired of it. i think apple is suck as i used to use windows. please any one help out/

Hi there 70gull,
At this point, you may want to try reinstalling OS X as your next troublehsooting step. Take a look at the article below for more information.
OS X Mavericks: Reinstall OS X
-Griff W.

Upgrade from iMac to Mac Pro - RAID5 options?

I am currently using a 27" iMac 2.66 Ghz Core i5 for my main processing needs (RAW image file editing in Adobe Lightroom & Photoshop plus HDSLR footage editing in Final Cut) and am feeling constrained by my storage options (I don't like external enclosures but want a separate boot/apps drive from my media drive) so my only logical upgrade path is a Mac Pro.
My ideal solution would be to have a lightning fast boot/apps drive (SSD seems obvious choice) and then a RAID5 array of 3 large (2TB) drives to give me at least 4GB of media storage.
The problem is that when I go to spec a Mac Pro with a hardware RAID card (because I understand that software RAID under Disk Utility can only offer RAID0 or RAID1), I am told by the web configuration tool: "Solid-state drives are not compatible with the Mac Pro RAID Card in either RAID or Enhanced JBOD mode."
What I would like to know is whether this is an absolute technical limitation or is it just something that Apple does not officially support? This would be my main production machine so I don't want to implement any hacks.
P.S. reason for my current dislike of enclosures is the extra cables/space/noise/heat they generate and also the current debate over interfaces (would like to use eSATA or USB3 to get fastest transfer speeds).
Thanks in advance for any replies!

3 drives to me = RAID3
Apple Pro RAID card: find a good external - threads discussing options - look at AMUG reviews and elsewhere. CalDigit or something. Maybe RAID6 capability.
I would use internal drives in software RAID0.
And the only interface for external, SATA only cases, none of these consumer cases for multi interface, though OWC has a popular RAID5 4 drive setup you might like.
Use OWC SSD or two for system, and 3 x 2TB WD Black RAID0. No trouble with that. Just lots and lots of clones and backups is all.

Migrating FCE 2 on G4 powerbook to FCE 4 on Intel iMac/Mac Pro: Questions

I am interested in migrating from FCE 2 on G4 powerbook (1.6ghz) to FCE 4 on Intel iMac/Mac Pro (have to decide which). I have two main questions:
Will my FCE2 projects, sequences, scratch files etc. (currently on external hard drive) open ok on the Intel based FCE4 system?
How much of a performance boost can I reasonably expect after this migration (for example renderings)?
Thank you in advance.

Thank you both for replying. Just in case anyone else is wondering about the second part of my question (speed of FCE on 1.6GHz Powerbook G4 vs an Intel iMac), I tested this out this weekend at the local Apple store. I took a 12 second clip on different computers and timed how long it took to render a contrast/brightness change. Here are the results:
7 sec. iMac
6 sec. Mac Pro
9 sec. Macbook Pro
30 sec. My old G4 Powerbook
So a 4-5 x bump! Impressive! Although its interesting that the mac pro isn't radically better than the imac.

HT1338 Can I upgrade my Intel Xeon MAC PRO running OS X 10.4.11 to 10.5.8?

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