This guy mentioned why he prefer to keep the 7,1 that can have more than 192GB of RAM.
...and
also said that, in the future, the solution might be a Mac Studio frontend with an optical TB cable leading to a rack, safely out of earshot, doing the heavy lifting - like the Vienna Ensemble software which is the RAM hog (he suggested keeping the old Intel Mac Pro just for that, but the software is also available for PC - its primarily the Logic "front end" that keeps him on Mac).
o keep latency low you need as much RAM as possible. Yeah there's swap memory but that causes more writes on the SSD and shortens it's lifespan and some don't wanna do that
That's all based on the assumption that the only two options are (a) have lots of RAM or (b)
pretend you have lots of RAM and thrash the swap file, which is a ridiculously inefficient way of doing it...
Isn't SSD now sufficiently fast - several times faster than spinning rust for peak speed and an order of magnitude better for random access - that
for audio purposes you could just stream the samples straight off SSD (maybe with just the first buffer-full preloaded) fast enough to play dozens in parallel?
It's certainly not the raw bandwidth that's the problem - with 6000 MB/s contiguous read speed - so it would come down to random access, which is harder to find figures for - but since a channel of high-quality audio is more like 1000
KB/s you've got some wriggle-room there, RAIDing several SSDs could help, let alone a 8 or 16-lane PCIe card optimised for that purpose. If we're talking about orchestral sample libraries, this is going to be a write-once/read-many situation, so wear isn't an issue (plus, it's
non volatile - your orchestra could stay loaded permanently)
I know that might not be how current software works - but in terms of "running towards where the ball is
going to be" is it perhaps the case that audio hardware/software needs a kick to get it to evolve beyond the days of spinning rust? Sounds to me like 100-simultaneous-voice sample players are something best built as a dedicated module.
...because the alternative is to buy a vastly overpowered (for audio work) CPUs and specialist motherboards
just for the RAM capacity. Even with "cheap" PC hardware, its not like your typical mini-Tower i9 or Ryzen PC supports more than 128-256G of RAM: you'd be paying a huge premium for workstation-class Xeon, Threadripper Pro kit
just to get the RAM. 2019 MP buyers were paying about $3000 extra to get the M-suffix version of the Xeon-W
just to get that potential 1.5TB RAM capacity.
NB: I'm not saying I applaud Apple charging $3k over the Mac Studio price for a bigger box, a PCIe switch and half-a-dozen PCIe sockets - although I hardly think they'll be selling enough to rack-up the economies-of-scale that makes PC hardware so cheap.
Hopefully M3 supports 300 gb RAM configs for them.
...but even that wouldn't be enough for a lot of the people wanting to have hundreds of sample libraries semi-permanently loaded into RAM. To support the sort of 1-2TB figure (and PCIe bandwidth) that the 2019 offered Apple would have to "re-invent" Apple Silicon - which is hitting the spot in profitable the laptop and SFF markets - just for the Mac Pro.