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A comment on Apple M3 Ultra. Parent comment

Re:Apple M3 Ultra by icedchai on Thursday March 06, 2025 @10:26PM (#43287167)
Yep! Though one could argue the Amiga wasn't true unified memory due to the chip RAM limitations. Depending on the Agnus revision, you'd be limited to 512, 1 meg, or 2 meg max of RAM addressable by the custom chips ("chip RAM".)
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Re:Apple M3 Ultra by vaxman on Wednesday March 12, 2025 @04:45AM (#43341050)
fun fact: M-series that are configured to use more than 75% of shared memory for GPU can make the system go boom...something to do with assumptions macOS makes that can be fixed by someone with a "private key" to access kernel mode (maybe not a hardware limit).
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Re:Apple M3 Ultra by icedchai on Saturday March 15, 2025 @04:43PM (#43375021)
I messed around with that setting on one of my Macs. I wanted to load a large LLM model and it needed more than 75% of shared memory.
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