I'm the same. Lots of birds but only edit a handful. I use LrC. Heads up. Before the M chip (Intel) Mac offered both RAM and VRAM. Now with the M chip it is unified memory.
In January I picked up a 2024 MacBook Air M3, 24GB Ram, 512 GB SSD for travel. I usually get 256GB RAM for my travel laptops but I waited too long. If I had ordered before I left for my trip it would not hav arrived in time so I had to get what they had in stock.
A few weeks ago I picked up a Mac Mini M4, 32GB RAM and 512GB SSD.
I still have a 2019 iMac Intel, 5K, 64GB RAM, 8GB VRAM and 512GB SSD. I purchased it with 8GB RAM and installed the 56 myself. You can't do that anymore. Currently I'm using it as a monitor for the Mac Mini.
I never get more 512 SSD for my desktops because I keep my files in external 8 TB drives so my Mac drives (including my old 256GB SSD's) are never more than half full. Apple charges too much for RAM.
Let me break this down for you. Currently for Adobe Denoise AI the Neural Engine is disabled. Adobe said they didn't like the results in the shadow areas and I expect them enable it again when they resolve the issue. I purchased the Mac Mini 4 in anticipation for that to come back.
Here is an example. Before getting my 2024 MacBook Air M3 I had a 2020 MacBook Air M1, 16GB RAM. It took 85 seconds for Adobe Denoise AI. When Adobe enabled the NE that dropped to 25 seconds. I have not been able to test my new M chip devices as the NE is currently disabled.
Comparing my 2024 MacBook Air M3 to my 2019 iMac Intel which is a beefy machine 64GB RAM and 8GB VRAM. The MacBook Air M3 is way faster at everything than the iMac expect for Adobe Denoise. MacBook Air is 43 seconds and the iMac is 33 seconds. Future proofing the iMac with 8GB VRAM was a good idea. As for editing with the Air have done over 75 edits using LRC which included multiple mask. Not even a hiccup. It's excellent. So is the Mac Mini.
Currently my Mac Mini M4 is about 40 seconds for Denoise AI and I think that is because I'm using the iMac as monitor but it does not have an HDMI port. Apple purposely set it so you can't use iMac's as monitors, but there are work arounds. Currently I'm using this device and my iMac and Mac Mini are communicating via ethernet. Not ideal but pretty good.
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So I can't really give you an actual Denoise time for the Mini because there is a slight delay. Fair bit of data moving back and forth between the Mini and Hub/Modem. Even with this delay for all other functions my Mac Mini is much faster than my old iMac. When Adobe enables the NE I expect some pretty significant improvements with Denoise AI. Then I may look into a monitor with an HDMI port.
My iMac Intel will not benefit from the NE and Sequoia will be the last OS upgrade I suspect. The OS upgrade is not a big deal as you get a few years of security updates for a few yeas.
I'm a hobby shooter and my new Mac Mini is more than enough for what I need. My MacBook Air rocks and the Mini is more powerful.