Upgrades For Mac Pro 2008

Posted : admin On 1/31/2022

Check compatibility

You can upgrade to macOS Mojave from OS X Mountain Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier.

EveryMac.com also provides RAM upgrade instructions for later 'Unibody' MacBook Pro models released between 'Mid-2009' and 'Mid-2012.' Upgrading the memory in the 'Late 2008/Unibody' 15-Inch MacBook Pro models is a bit more difficult than it is in the very easy earlier MacBook Pro models, but it still is. If you would like to buy me a coffee click here: This video is an outline on how to flash a Mac Pro 4,1 to a 5,1 which will al.

MacBook introduced in 2015 or later
MacBook Air introduced in 2012 or later
MacBook Pro introduced in 2012 or later
Mac mini introduced in 2012 or later
iMac introduced in 2012 or later
iMac Pro (all models)
Mac Pro introduced in 2013, plus mid-2010 or mid-2012 models with a recommended Metal-capable graphics card.


To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Mojave, the installer will let you know.

Make a backup

Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.

Get connected

It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.

Download macOS Mojave

For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.

If you still need macOS Mojave, use this App Store link: Get macOS Mojave.

Begin installation

After downloading, the installer opens automatically.

Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.

If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.

Allow installation to complete

Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.

Learn more

  • If you have hardware or software that isn't compatible with Mojave, you might be able to install an earlier macOS, such as High Sierra, Sierra, or El Capitan.
  • macOS Mojave won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
  • You can use macOS Recovery to reinstall macOS.

Upgrades For Mac Pro 2008 Download

2008 Mac Pro Dual 3.2GHz (X5482) Quad-Core CPU Upgrade (Low-Cost/DIY)
Posted: April 10th, 2012
Last Updated: Feb. 18th, 2013
For'CPU upgrade report - Mac Pro 2008Upgrade 2008 macbook
Upgrade Been quite a few delays between upgrading my son's mac mini and finally able to upgrade my Mac Pro this week. Of note, there are very few upgrade notes for the 2008 Mac Pro (3,1 model) to be found. Plenty for for 2006 and 2009+ but a real dearth for the 2008. In fact, your site has the only one I found.

I bought a matched pair of 3.2GHZ Xeon X5482 quad-core CPUs off ebay for $495 which is the fastest this Mac can take (It cannot use the 5492s). (Ref: Intel X5482 CPU info.) I've thrown my quad 2.8s on craigslist for $250 for the pair but no hits yet.

You can follow most of the 2006 Mac Pro upgrade notes/youtube videos but there are differences. Specifically:

Upgrade Mac Pro 2008 To El Capitan

  1. The memory cage has four screws instead of two. No big deal as they are obvious.
  2. The tricky screw is in the fan assembly. The 2006 and 2008 both have the upper screw but the 2008 also has a hidden screw that is not visible unless you look inside the rim of the fan assembly after the processor cover is removed.
  3. The CPUs are not oriented identically. The bottom CPU's placement is rotated 90 degrees. Again no big deal but should be noted as the mechanisms can tangle if both are open at once.

I used Artic Silver 5 and followed its directions which differ from Apple's. Apple recommends covering the CPU cap with paste liberally (I have the 2006 tech manual) which is not advised by Silver Ice. Considering the issues Apple has had with the overuse of paste on the Macbook Pros I went with Silver Ice's method which is an even line most of the way across the cap which expands to an oval when compressed. Also, in the videos that I saw many of these people were sloppy with the paste and even touched the CPU cap and heat sink with their fingers which is beyond wrong.

Anyway, upgrade went fine and my system has been running as silent as before with no real difference in heat out the back either for 24 hrs a day for a week. Current temps are: 75 F ambient, CPU A: heatsink: 93 F, CPU: 102 F; CPU B: heatsink: 96 F, CPU: 102 F. (Idle temps, and not core temps I assume. Temperature Monitor used?) Memory temps are high at 132 to 156 F. (FBDimms the 2006-08 Mac Pros use can run even hotter. They have an appx 4GHz (IIRC) serial/parallel chip ('AMB' - Advanced Memory Buffer). Some readers reported 80+°C/180+°F FBDimm temps on an older page here on Mac Pro FBDIMM ram. OK if proper heatsinks used but some FBDimms early on didn't.)

Upgrade Mac Pro 2008 To Mojave

It's OWC RAM (shameless sponsor plug - I've used them for a decade and buy all my RAM from them) with heat spreaders and lifetime warranty so I'm set if a problem occurs.

Overall a great upgrade that just took the right timing on ebay.
best regards, wolf'

Thanks Wolf.
(Update/FYI: The Feb 18th, 2013 news page has another reader report of a low-cost 2008 Mac Pro Dual 3.2GHz Quad-Core CPU Upgrade. Said he got his CPUs (used/pulls I assume) on Ebay for $250.)

Upgrade Mac Pro 2008 To High Sierra

Other Mac Pro Related Upgrade Articles:
See the Macs/systems page (on CPU, Drives, Mods, etc).
(Here's links to previously posted 1st gen Mac Pro CPU upgrade guides - a Youtube Video guide on CPU swaps in an early Mac Pro (MacWelt TV - in german) and a Sept. 2006 Anandtech article on Upgrading the (1st gen) Mac Pro's CPUs. Don't forget a long 3mm hex wrench to remove the heatsinks. For readers in the USA, the Elkind 3mm hex wrench (9-10' long 'T' wrench) from ACE hardware seems popular (and cheap - $4 reportedly, although like anything prices may vary).