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A couple of things to consider when trying to benchmark these things. AUv3 is probably working a bit differently than you think it is. If you put some on the new M1 Mac and look at the CPU usage and thread count in the Activity Monitor, you can see some interesting things. The first is that when you launch an AUv3 in a host, it gets launched as a sub-process. All subsequent instances of this same AUv3 in the same host get launched in the same process. Now, if you launch the same AUv3 in a second host, a new sub-process is started and will contain all of the instances of the AUv3 you are testing in that host. If you watch the thread counts for each of the subprocesses it gets pretty interesting too. It doesn't scale in a simple fashion and it scales differently in different hosts.
I'm pretty sure that the Moog synths do some things under-the-hood with the way they run in the container process that are not a straight forward running of duplication of effort on each of the "instances" that are running. This and the fact that it is a very heavy on the CPU AU probably make it not the best candidate for benchmarking the various iPads on the multi-core support. A lighter weight, more straight forward, synth or effect is probably going to be better at giving you a more fine-grained feel for how each of the iPads will work. You'll have to put in a bunch more instances, but you can get a better feel for how the iPad actually handles a real world load. I'd do it by making a more complex "track" with hardware inputs and multiple different effects and then duplicating this until it failed.
As far as a synth using the same amount of CPU when no notes are playing goes, if I were writing a circuit modeled simulation of an analog synth that is known for how its instability over time adds to its character, it would absolutely use the same amount of CPU at all times. The same exact modeled circuits would have to be running no matter what modeled CV input was hitting the VCF, VCO, or ADSR.
plus Mini5 if you don't need big screen or you explicitly want small screen but still power comparable with 2018 PRO models ;-) Which is my case :-)
which iPad should i be looking at to run backing tracks and plugin automation for live shows..?
I have just recently taken delivery of an iPad Air4.
I just want to say - anyone in a position to do so but is unsure about upgrading - please do not hesitate. I have wasted months by dithering (I was using Air 2’s). The difference is unreal.. it’s like another world. Totally sublime.
At the moment the iPad Air 4 offers the best performance for the money. If you can wait some more weeks, I would wait for the new iPad Pro that according to leaks is expected to be presented in March. Since the last iPad Pro model mostly upgraded the camera and the sensors, everyone’s expecting a processor upgrade to the current A14 generation. Leaked benchmarks of that new processor showed a performance that equals mobile Intel I7 CPUs for laptops - so the update is huge. Anyway, someone tested how far you can get with the iPad Air 4 and it was able to handle 50 audio tracks in Cubasis. Well, some people never bought a device because a new and better one is been announced all the time
I have the top spec current iPad Pro and I’ve never even got close to maxing out the CPU. This thing is a beast.
I’ll probably get the new one when it’s out though, I just like shiny things.
As long as the iPad is relying on single core performance, I don't think there won't me much of a difference between the air 4 and upcoming pro. But with cubasis things are changing. Wonder when this will happen with AUM.
Still the air 4 is beast, I manage to add 14 instances of swam which are tremendously heavy CPU wise.
But I started to consider things differently, and began multiplying iPads (more touch surfaces accessible, and have the CPU spread among devices) with the pc in the center of setup, and running what I am missing with iOS : MPE synths (equator and plasmonic), certains reaktor patches, and huge Kontakt libraries, drum libraries. It's really working well with those iconnectivity units.
So much this.
2-3 10” iPads or iPad Airs + a 200gb iCloud to keep them all in sync is gonna serve you FAR better and be cheaper than a maxed out Pro.
(If your really use that much cpu)
Totally with you, I’ve had the same thing happen to me. That Air4 can do anything I wanna throw at it.
Ok so with an iconnectaudio4+ and iconnectmidi I can hook up to 4 devices (3 iPads and a pc). This is insane ! Saves a whole lot of cpu power everywhere. Midi clips are recorded in Bitwig and routed to the iPads though the iconnectivity devices, audio sent back to the computer in Bitwig to be recorded without ad/da. 9 stereo audio tracks through the I connect audio port, 3 stereo track through the iconnectmidi. Asio4all takes care of aggregating the devices, and able to set at 128 samples latency on the computer.
How likely Apple will put out a new iPad this year? Will they announce something in March?
They should. Their PRO level iPad is not the most powerful at the moment. It’s the Air.
I have a iPad Pro (12.9-inch) (2nd generation).
When I first got it I was worried it was too big. Now I wouldn’t go back. It’s awesome.
Yes, I do want a 12'9 one...so in March we'll find out more about it
Looks like new colored M1 iMacs will come soon...
I would say not really so huge. Apple's iOS processors have been roughly equivalent to fastest Intel laptop CPU's for a while. Actually the Apple chips are generally faster at single core, not as fast at multi-core. E.g., comparison here: https://gadgetversus.com/processor/apple-a14-bionic-vs-intel-core-i7-10710u/
Yes, the Apple chips compete already quite well to mobile Intel chips for a while - that's true. But if the leaked benchmarks are correct the A14X will deliver 50% more multi-core performance than the A12X. I think that's quite an upgrade.
https://gadgetversus.com/processor/apple-a12x-bionic-vs-apple-a14x-bionic/
Sure, if you're using an old processor then the upgrade will always depend on how old/slow your processor is. But we already have A14's in the iPad Air, and single core performance of A14x is only about 10% better. And anything with A14x will probably cost more. Not disagreeing that things are improving, as they consistently have for decades. Just adding some perspective. Improvements now are actually not as dramatic as they were, say, between 1970 and 2000, when speeds doubled roughly every two years. http://www.mooreslaw.org/
Give me the old processor and quadruple the ram, that’s where I’ll be happy. My processor never goes over 50% but ram’s always at 80% and above on pro 11 2020.
Have you tried playing 5-10 instances if Model D?
Haha, no but I feel I might have better things to do with my time