This difference between real-world limits and outdated Apple spec-sheet limits has been noted for many years, more than a decade and maybe two.Īs you have discovered, MacTracker is a great resource for things Apple - I've been using it for many, many years.Īnother good resource for such info is often noted in MacTracker, Apple-history. What that statement is saying is: 16 GB (according to Actual real-world determination) 8 GB (according to Apple spec sheets ) Mactracker shows me that the max memory capacity of my computer is '16 GB (Actual) 8 GB (Apple)'. All RAM is non-Apple - Apple does not manufacture RAM it simply resells it. I am planning to upgrade the memory of my MacBook Pro (13 inch, mid 2012) and was looking for the maximum RAM capacity of my computer. That statement in MacTracker does not mean that the RAM is of Apple manufacture, and that other RAM is non-Apple. Later on, when larger modules became commercially available, it was found that that machine was capable of handling 16 GB RAM by using the larger modules.Īpple has not changed their spec sheet from when it was first published, so it still shows 8GB. Specifically, the M1 is a system-on-a-chip (SoC) design like you would see in. This number was based upon the sizes of RAM modules available at that time. The 16 GB limit was a design choice, not a technical limitation as such. Tags APFS Apple AppleScript Apple silicon backup Big Sur Blake bug Catalina Consolation Console Corinth diagnosis Disk Utility Doré El Capitan extended attributes Finder firmware Gatekeeper Gérôme HFS+ High Sierra history of painting iCloud Impressionism iOS landscape LockRattler log logs M1 Mac Mac history macOS macOS 10.12 macOS 10.13 macOS 10.14 macOS 10.That means that the Apple spec sheet, published when your model was first released, states 8 GB. Updated from the original, which was first published in MacUser volume 28 issue 19, 2012. On their website it says that you can install 32gb of ram on my. It has been running slow so I decided to buy some extra memory from. Mainstream memory vendors, including Apple, will still tell you that it cannot use more than 4 GB, though.Ĭomments A good reference guide to memory capacity of every Mac model is of course MacTracker, from here. 1 I have a 21.5 inch iMac, mid 2011 model. However it can actually address 6 GB, so some Mac memory vendors now offer an upgrade including one 4 GB and one 2 GB module, although 2 x 4 GB SO-DIMMs will not work. Your MacBook Pro is a good example: when Apple released it, the maximum memory was stated as 4 GB, based on 2 x 2 GB PC2-5300 DDR2 SO-DIMM modules. The maximum memory that can be installed in any Mac is the lower of: However there are Macs that have never been able to realise their hardware maximum because suitable memory modules have never been manufactured. Of course if someone came out with ‘compatible’ 4 TB DIMMs, as the hardware could not address 32 TB, the hardware maximum is the ultimate maximum. However that is not always the same as the maximum amount of memory that Apple states when it first releases a product, and even years afterwards you can sometimes squeeze more in than you thought.įor instance, the Mac Pro 8-core, when released, was claimed by Apple to support a maximum of 16 GB of memory, in 8 x 2 GB DIMMs.Īt that time, 4 GB DIMMs were not available for it, but they are now, and lo and behold, you can upgrade it to hold 8 x 4 GB DIMMs, for a total of 32 GB. Is it not true that the maximum usable memory is determined by the hardware, and is thus the amount stated by Apple? How much can I install in my MacBook Pro Early 2008, as Apple and suppliers state that it only supports 2 x 2 GB modules for a total of 4 GB: could I install 2 x 4 GB for a total of 8 GB?Ī You are correct that it is the hardware that ultimately determines the maximum amount of memory that can be addressed. ![]() Q I have heard that whenever bigger memory modules become available for a particular computer, you can install them into your Mac. 1,199: Apple M1 chip with 8core CPU, 7core GPU, and 16core Neural Engine, 8GB unified memory, 512GB SSD storage 1,299: Apple M1 chip with 8core CPU, 8core GPU, and 16core Neural Engine, 8GB unified memory, 512GB SSD storage As you can see, the extra Grant gives you an 8core GPU while leaving everything else the same.
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