Apple has reduced the memory bandwidth of the M3 Pro

Apple has reduced the memory bandwidth of the M3 Pro chip by 25% compared to the M1 Pro and M2 Pro

The Apple M3 Pro processor introduced today has 25% less consistent memory bandwidth compared to its predecessors, the M1 Pro and M2 Pro chips. Specified chip debuted in Updated 14- and 16-inch MacBook Pro laptops.

    Image source: Apple

Image source: Apple

Apple’s new 3nm M3 series processors are Apple’s fastest and most power-efficient computer chips. According to the company, 14- and 16-inch MacBook Pro models with the M3 Pro processor deliver up to 40% faster performance than the 16-inch MacBook Pro model with the M1 Pro processor.

However, according to the technical specifications, the M3 Pro offers a uniform memory bandwidth of 150 GB/s, which is a quarter less than the 200 GB/s of the previous M1 Pro and M2 Pro. The throughput of the basic version of the M3 Max chip with 14-core CPU and 30-core graphics has also been reduced. This version has a memory bandwidth of 300 GB/s, while the older M3 Max with 16-core CPU and 40-core GPU offers 400 GB/s. In addition, all versions of the M2 Max chip have a throughput of 400 GB/s.

It is noteworthy that Apple decided to change the configuration of the cores on the M3 Pro. The new 12-core M3 Pro has six powerful and six energy-efficient cores. The 12-core M2 Pro, on the other hand, has eight productive and four energy-efficient cores. The number of graphics cores in the new product is also lower – 18, not 19, like in the similar version of the M2 Pro.

You can also find that the Apple M3 chips and the Apple A17 Pro mobile processor, first introduced in the iPhone 15 Pro, have Neural Engine neural processors with the same number of cores. However, at maximum theoretical performance, measured in trillion operations per second (TOPS), the computer chip loses out. According to Apple, the M3 chip’s Neural Engine AI coprocessor delivers performance of up to 18 TOPS, while the same unit in the A17 Pro claims performance of 35 TOPS. It’s hard to say what causes the difference. The iPhone 15 Pro likely needs more Neural Engine power for its photo and Face ID algorithms. The lower performance of the AI ​​coprocessor in the M3 can be compensated for by using additional GPU cores.

Given all of this, it’s actually hard to understand how much difference in performance Apple’s new M3 processor series can offer compared to its predecessors in various use cases. Especially considering that M3 chips use the new Dynamic Caching technology, which ensures that a certain amount of memory is allocated for a specific task.

Even more questionable is the fact that Apple chose to compare the new M3 Pro and M3 Max to the M1 Pro and M1 Max rather than the more modern M2 series processors. But perhaps the company just wanted to show more impressive numbers. Independent testing of fresh MacBook Pros with new chips will help clarify the situation. We would like to remind you that deliveries begin on November 7th. Pre-orders for updated laptops are already being accepted.

About the author

Dylan Harris

Dylan Harris is fascinated by tests and reviews of computer hardware.

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