Quote:
Originally Posted by JFreak
Unfair comparison. ARM takes more performance from less memory, compared to x86.
Memory bandwidth of 800GB/sec is something. Intel Mac Pro had half of that which means ARM Mac Pro can do twice the work with its memory. Add faster SSD and we are at 3X performance easily.
Just for comparison, I have 2TB SSD for nightly backups. The idea of ARM processor handling that two terabytes in two and a half seconds is mindblowing.
No need for terabyte memory for now.
EDIT:
... and by the way, the 2019 towers also maxed out at 192GB memory if you bought the normal priced sticks. You needed the more expensive LR-DIMMs for more than 192GB and if you maxxed at 1.5TB your bank manager was happy. For a cheap price of 53 thousand dollars you bought yourself bragging rights that are already obsolete. And that is without display and other peripherals. Must have been most overpriced Mac ever!
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You've swallowed the cool aid, Janne.
Apple use exactly the same Samsung LPDDR memory in their SoCs as everyone else in the industry. That includes pretty well every smart phone design in existence. Their enterprise grade ECC memory was overpriced. The price they want for smartphone memory is... just absurd.
The 800gb/s figure you are quoting merely represents total memory bandwidth. The M2 Ultra has twice the bandwidth of the M2 Max because it is two M2 Max chips on a single die. It needs to be high bandwidth because it
does twice as much. That is what unified memory is. It gets shared by all the CPU and GPU cores, and without adequate bandwidth it will bottleneck.
Intel systems don't require memory to be shared. It has discrete DDR for RAM and GDDR graphics processes. To put it into perspective, an
Nvidia A5000 has 786gb/s of memory bandwidth just for graphics processes alone...
192GB of memory for a 2019 Mac Pro will only cost $661 for the full 192GB. Not $1600 for just the 64 to 192gig upgrade.
And not to burst your bubble, but the read and write speeds of SSDs included in Apple Silicon machines is no different to current PCs. Have a read
here, then compare it to the same test using a $299 4TB WD SN850x that I ran...
Apple's SoC design simply does not flatten, outperform or annihilate the competition. The benefit of unified memory is reduced CPU & GPU overhead. Lower overhead = lower power consumption. Performance per watt is where Apple Silicon excels.