MacUpgrades.co.uk offers a wide range of fixed price upgrades and repairs for your Apple computers. You can drop in to our offices in Sawston, Cambridge or if you are not local you can either have us collect or send in your computer yourself. Sameday fitting is available for most items, contact us for details. We also offer on site installation services and training on your premises.
Enter your serial number into the box below for specific upgrades for your machine. Each upgrade has been tested in the machine we list it for. Compatability is 100% guaranteed or your money back.
How to find your serial number in software
You can find your Mac's serial number in Apple System Profiler: Select the Apple Menu > About This Mac, then (depending on the version of OSX you are running) click the System Report button or the More Info button. This brings up System Profiler, and on the Hardware Overview that is displayed by default you should see your serial number, and be able to copy/paste it. The procedure does vary slightly between different versions of OSX.
If you can't boot your Mac
If your Mac is not working, the serial number is printed on the computer casing but the location varies. Here are the main locations of serial numbers on Apple computers.
Unibody MacBook Pro - Laser etched onto the base.
MacBook, Early MacBook Pro, PowerBook G4 - Inside the main battery bay. Remove battery to locate.
iBook (White) - Under the keyboard. To lift keyboard, pull back on the release tabs between the F-keys.
Intel iMac, iMac G5 - Underside of the foot/stand.
iMac G4, iMac G3 - Underside of the iMac.
Mac mini - On the underside of the Mac mini.
Mac Pro 2006-2012 - On rear of machine near graphics card ports.
PowerMac G5 - On lower chassis under side panel. To remove side panel, lift lever on rear of Mac.
PowerMac G3, PowerMac G4 - Label on the back of the Mac.
Your Mac's Model Identifier can be found in System Profiler. You can use the drop-down menus above to be taken to a page that displays upgrades specifically for your exact model.
This tool is also available on its own page, with a list of all Model IDs here.
Apple Serial Number Lookup
Mac Pro "Eight Core" 3.5 (2019)
Here you can find the exact specifications of this Mac, along with guaranteed compatible upgrades for it, and an upgrade tool to let
you quickly build an order which can be saved
for later or shared with a friend.
You can select the option you want using
What is RAM and how does it help? - Click here for more info
RAM stands for Random Access Memory, it is a short term store for data which is only used while the machine is in operation. This is not where your data and applications are stored (that's the Hard Drive or Solid State Drive) so RAM can be replaced without worrying about any data transfer issues.
How much RAM you need depends very much on what you are doing with your Mac. Adding more and more RAM does not necessarily speed your machine up - rather the better way to think about it is that not having enough RAM will slow you down. When your system runs out of physical memory it will use virtual memory on your hard drive instead, this is orders of magnitude slower than RAM, and will result in more instances of the spinning wheel or stuttering.
The more RAM you have, the more things you can do at once and you are able to switch between them better. Also as later operating systems come along they have greater requirements, so a machine feeling fast running OSX 10.7 with 4GB of RAM may well feel sluggish in OSX 10.10 with the same.
Here are the amounts of RAM we have found to be the real minimum for comfortable use in different operating systems. The minimum levels here are not absolute, but even lighter users will be well advised to take steps to minimise RAM use (principly restricting the number of applications they use simultaneously) if they are below them. Of course for some more specialist users of RAM intensive applications, even the ideal amounts listed will be grossly inadequate.
Mac OSX 10.6 Snow Leopard - Min 2GB, ideal 4GB or above
Mac OSX 10.7 Lion and 10.8 Mountain Lion - Min 4GB, ideal 6GB or above
Mac OSX 10.9 Mavericks,10.10 Yosemite, 10.11 El Capitan - Min 6GB, ideal 8GB or above
macOS 10.12 Sierra - 8GB or above
Some systems may not be able to use these amounts but will still run the newer OSs, in these cases maximising your RAM will be the best you can do. To get a better idea of your own specific RAM requirements, you can use the Activity Monitor utility built into OSX. This will let you see how much RAM you really need while using your Mac in the way you use it. Activity Monitor is inside your Utilities folder, which is inside your Applications folder. Apple have an in-depth explanation of how to use Activity Monitor here.
There are lots of different types of RAM. The RAM modules and compatability information below was generated from the Serial Number or Model ID you selected, and is guaranteed to work 100% or your money back. Even if your manual says otherwise! Original manuals, and even online documentation, are not updated after a machine is released and therefore not up to date with the actual maximum RAM that can be used. Many machines can make full use of more RAM than the offical spec, and we guarantee that the maximum amounts we list will work flawlessly, and be fully utilised by your Mac.
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DDR4 ECC DIMM 2666MHz (2933MHz RAM is fully compatible and clocks down to the slower speed)
Max RAM by Slot:
8 x 128GB provides the max RAM of 1TB. Can also run with 12 x 64GB for 768GB of RAM.
Here are our list of fixed cost repair and installation services for this Mac. All machines for repair or upgrade can either be shipped to us (we can arrange collection if desired), or you are welcome to drop the machine into our offices in Sawston, Cambridge. We have been doing Apple Mac repairs since 2001, you can be assured of a complete, speedy, good value and professional service.