I heard him say that. It was just his speculation though. To see if he truly believes it then you may ask him if he believes that if his M2 Ultra 24/76 Studio which has a 800gb/second memory bandwidth was somehow changed to 68gb/second memory bandwidth like his M1 8/8 Mini that there would be no difference?The photographer and YouTuber who tested the Mac Mini, and whose video was shared here, mentioned that memory bandwidth isn’t really a limiting factor and is often just an empty spec. He literally said, “It’s a number you can technically ignore.”bakubo wrote
Also, the M4 has 120gb/s memory bandwidth and the M2 Pro has 200gb/s memory bandwidth.
is this true?
Or if the M4 Max 16/40 which has a 512gb/second memory bandwidth was somehow changed to 68gb/second memory bandwidth that there would be no difference?
The more CPU, GPU, and NPU cores there are means there is more need for higher unified memory bandwidth.
Anyway, he was just making an offhand speculation and just because someone says something on the internet doesn't mean they are right. That goes for me too.
You might ask yourself why Apple would go to such trouble and expense to have 800gb/second, 512gb/second, etc. memory bandwidth when 68gb/second (or maybe 33gb/second or 10gb/second) would provide exactly the same performance even when lots of CPU cores, lots of GPU cores, lots of NPU (Neural Engine) cores are all accessing and using unified memory at the same time?
Probably the M4 Ultra when it comes out will be more like 1024gb/second.
These are just my thoughts. Maybe other people have things to add that we both can learn from.
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