Apple M4 Max memory bandwidth exceeds 500GB/s, the first time for a non-Ultra version

[ Gearbest Technology News]Recently, Apple officially released the most powerful member of the M4 series, the M4 Max processor, which can be configured with a 16-core CPU and a 40-core GPU to meet high-performance needs. What’s even more amazing is that the processor supports up to 128GB of unified memory and a memory bandwidth of 546GB/s. This marks the first time that Apple’s non-Ultra-level chips have exceeded 500GB of memory bandwidth, setting a new benchmark for technology development.

Although the M4 Max’s memory bandwidth is excellent, it’s still not as good as the 800GB/s of the M1 Ultra and M2 Ultra. M1 Ultra and M2 Ultra maintain faster memory speeds today due to their “UltraFusion” technology, which combines two M1 Max chips into one to achieve ultra-high bandwidth.

Among the M4 series, the M4 Pro was billed as Apple’s fastest processor ever when it was released, even surpassing last year’s M3 Max and M2 Ultra in multi-core performance and memory bandwidth. However, this “fastest” title will briefly end with the release of the M4 Max. Compared with the M4 Pro’s 273GB/s, the memory bandwidth of the M4 Max is fully doubled. The reason is that the M4 Pro has a maximum configuration of 64GB of memory, while the M4 Max can support 128GB of memory.

In addition, M1 Ultra supports 128GB of memory and has 800GB/s bandwidth. This achievement is due to Apple’s UltraFusion technology. By combining two M1 Max chips into a single unit, M1 Ultra is able to provide ultra-high memory bandwidth beyond what a single chip can achieve. In comparison, the M2 Ultra can be configured with up to 192GB of unified memory, but its memory bandwidth is still limited to 800GB/s. This may be Apple’s choice due to design constraints rather than hardware bottlenecks.

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