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You might recall my old MacBook Pro had only 4GB of graphics memory, whereas the new MacBook Pro has up to 8GB to play with, which is likely to lead to better overall performance, even though it has less memory overall. So, in the example above, once the 3D action in the game kicks off, the graphics chip can use the majority of the unified memory to work its magic.
WHAT IS BETTER A MAC OR PC COMPUTER FULL
What’s more, each component has access to the full quota of memory. With unified memory, the main processor and the graphics processor have access to the same pool of memory, so there’s no need to shuttle data back and forth between the two. However, that involves bits of data being shuttled back and forth between components, which creates a bottleneck. When I fire up a game on my MacBook Pro, the processor, system RAM, graphics chip and graphics memory must all work in sync for smooth frame rates. However, the two aren’t directly comparable because unified memory is much more efficient.
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That’s almost five times as much RAM as the new M1-based MacBook Pro 13in. This is a relatively paltry amount by today’s standards: the 2019 MacBook Pro I’m writing this article on, for instance, has 32GB of RAM and 4GB of memory devoted to the graphics chip. Unified memory might sound like a backwards step, especially as Apple ships even its latest iMac with only 8GB of unified memory. Unified memory does away with those two discrete pools of memory and combines them into one, hence the name. This was separate from the main system memory (or RAM). In the past, the graphics chips – the component that is predominantly used to power games – would have come with its own physical allocation of memory. Now, instead of the insides of your computer being lots of separate components (an Intel processor, an Nvidia graphics chip, say) that are attached to a motherboard, the latest Apple Macs are what’s known as a system-on-a-chip (SoC), where the processor, the graphics chip and the memory are all part of the same package. Unified memory is found on systems that use Apple’s own processors, the first iteration of which are called M1. What is unified memory, you might be wondering, and is it better or worse than good old RAM? Let us explain. If you’ve bought a Mac recently, or are considering buying one, you may have noticed that Apple sells computers with what’s called ‘unified memory’ instead of the traditional random access memory (RAM).