It will do, and is fine with LRc.

In Part III I set forth some technical measurements which indicated that the performance of the 2024 Mac Mini M4 was pretty much on a par with that of the 2010 Mac Pro fitted with dual 3.46gHz 6-core Intel CPUs, 80gb of memory and a speedy Nvidia GTX980 GPU. By contrast the M4 Mini has a single 10 core CPU and just 16gb of very fast memory. This testifies not only to the great performance gains realized by Apple with its in house Apple Silicon M4 CPU with its integrated GPU, but also shows just how awfully good that old behemoth, the Mac Pro tower was almost 15 years ago. Sadly, Apple’s planned obsolescence strategy, which saw to it that the Mac Pro was now six generations of MacOS behind, forced the upgrade. Well, that and the aggressive pricing of the new Mini, and my electricity bills will fall!

I now have a month of heavy daily use with the M4 Mini under my belt, much of that with the Apple Silicon optimized Lightroom Classic (LRc – v14.1.1), an upgrade from the prior Lightroom v6.4), so the following observations are mostly subjective.

Start up is much faster at 4-6 seconds compared with 20 for the older version, if I get a beachball it’s maybe once or twice a week, and with previews enabled image-to-image flipping is instantaneous. There’s the very occasional delay of 3-4 seconds for the image to render in full definition but that was also much the case with the Mac Pro.

More significantly, the latest version of LRc adds significant functionality in terms of localized image adjustments with both the Remove and Masking tools well implemented and easy to use, largely obsoleting the more complex variants in Photoshop. Indeed as I hate paying rent I dropped PS all together and made a one-off purchase of Affinity Photo 2 which does all I need on those rare occasions where LRc cannot do the trick.

A good example of the use of these new to me tools is in this night snap of a retailer’s window in Carmel, CA. The host of images I took in that setting all have a common factor which is that the dynamic range is very high, necessitating exposure for the highlights, to avoid burn out, with a post processing need to bring up the shadows. In the case of these ‘before’ and ‘after’ images not only was the shadows slider used to bring up the shadows across the whole image, I then selectively masked the fountain at the lower left to bring the sparkle in the water to life. The difference is, err…., night and day:

Before.

After.

In learning some of these new features I invested in Scott Kelby’s book. It does not cover the recently added Remove/Generative Fill functions but is an excellent learning resource, greatly superior to any video I have seen.

Returning to the Mac Mini M4, it never gets more than a tad warm to the touch, is small enough to nestle at the back of the keyboard tray and performs equally to the old Mac Pro at a fraction of the cost. While there were many frustrations regarding application incompatibility when switching from Intel to Apple Silicon CPUs these are now behind me, though I still hate paying Adobe $10 monthly in rent for LRc. Otherwise, what’s not to like?

Matching storage.

In Part IV I wrote about the French company named Polysoft which is providing upgraded storage for the Mac Studio computer, adding that I expect they will expand their offerings to include the Mac mini M4.

That may take a while as they will have to reverse engineer around Apple’s greed, but meanwhile another entrepreneurial outfit has produced an external SSD in a box with the same footprint as the Mini. TechRadar has the story and storage capacities from 512gb to a whopping 8tb will cost from $140 to $1000. That is extremely competitive when you look at Apple’s upgrade pricing – Greedy Timmy wants an additional $800 for just 2tb.

The Orico external SSD for the Mac mini M4.

Orico claims a throughput of 40Gbps which seems unlikely to me, but we should soon be seeing test data.

Expect storage upgrades soon.

In Part III I wrote:

Internal SSD upgrades: Early teardowns of the Mac Mini M4 disclose that the NAND storage resides on a removable card. However, components on that card make it impossible to simply plug in a larger storage one as the Apple design ties the card to your particular machine. However, hackers with micro-soldering skills have unsoldered the two existing NAND modules from the card, replacing them with much larger ones for very low cost, and things work well. So you can bet that an aftermarket business will shortly arise offering this service. When you realize that Apple charges $200 for the jump from 256gb to 512gb, and $600 more to go from 256gb to 1tb, there’s money to be made from competing with Apple’s greed. So if you want a 1TB drive or greater it might make sense to buy the base 256gb $600 Mac Mini and wait for the market to offer upgrades.

Well, here we are not a month after the release of the Mac Mini M4 than French company Polysoft has reverse engineered the NAND storage in the Mac Studio and will soon be offering 8tb upgrades for $1,160. Here’s Apple’s pricing – greed personified while Mr. Cook walks around the stage, hands prayerfully clasped in supplication to the god of money:

Mac Studio SSD upgrades.

And here’s the excellent article and related video from Cult of Mac explaining what Polysoft accomplished and it’s really magical:

Click the image for the article.

In contrast to much of the appalling dreck found on YouTube, Luke Miani’s presentation is articulate and involving.

The real volume for Polysoft’s business will be selling upgrade SSDs for the Mac Mini M4 because that’s where the money is. I would expect they should have a competitive offering in a quarter or two. And yes, Apple’s greed for upgrades to that machine is equally abundantly on display. Well done Polysoft. Vive La France!

Performance.

My primary use for the Mac Mini M4 is for processing and printing still photographs from either my Nikon D800 (36mb lossless compressed RAW files) or from my iPhone 12 Pro Max (32mb Apple Pro RAW) using Lightroom Classic. If video processing is your focus I suggest your research what your applications of choice require in terms of machine hardware.

Apart from the dramatic size and weight comparisons –

• Mac Pro – 54lbs, self contained.
• Mini – 1.5lbs, drive enclosure 10 lbs, DVD reader/burner – 2lbs, the last two external

– the CPU and GPU comparisons are also striking:

• The 2010 Mac Pro sports two 6-core 3.46gHz Intel CPUs, an Nvidia GTX980 4gb GPU and 80gbs of 1333MHz RAM.
• The Mini uses a 10 core 4.4gHz CPU, a 10 core GPU, all Apple Silicon and 16gb of 7500MHz LPDDR5X RAM.

Both machines boot from SSDs and data storage is on traditional spinning disk HDDs.

CPU performance: The Geekbench comparisons are instructive:

Mac Pro on the right.

Simply stated the Mini is 42% faster on single core tasks but 27% slower on multi-core tasks. Now Adobe claims that Lightroom Classic is optimized for Apple Silicon and uses multiple cores when processing. Who knows? I find it hard to believe anything from this poor integrity business. The same one that sold me a ‘perpetual’ license for LR6 only to make sure it did not run on Apple Silicon.

Disk speed: The Mac Mini’s internal SSD is far faster than the SSD in the Mac Pro:

Mac Pro below.

This five fold speed increase contributes to the Mini’s fast start and application loading performance. LR takes 4 seconds to boot on the Mini (my picture catalog contains some 29,000 images) compared with a lengthy 20 seconds on the Mac Pro.

GPU performance: The Mac Pro used a very capable 4gb Nvidia GTX980 card which cost more back in the day than the Mac Mini M4! LuxMark comparisons show that the GPU in the Mini is 15% faster when rendering a complex scene:

Mac Pro below.

Performace with Lightroom: I’m no fan of subjective evaluations when it comes to processing speed but am finding that the Mini is pretty much identical in performance to the Mac Pro when processing images from the relatively large Nikon and iPhone files. With 1:1 previews you can fly through images by holding down an arrow key and when you cease the sharp preview pops up instantly. So the use experience is much the same, you have a minuscule box doing what a monster one did the past 15 years and power consumption is negligible by comparison (one small fan compared with 7 large ones (two of those in the GPU) and a power efficient CPU/GPU). The power supply section of the Mac Pro is alone maybe twice as large as the Mini, which also sports an integrated power supply unit which is tiny.

Security: Perhaps the greatest gain, as mentioned in the opening of Part I, is the availability of up to date security to fend off the bad guys. Yes, Ivan and Boris, I’m looking at you. Cost wise, while Apple continues its habit of ripping you off on disk storage ($200 extra for 256gb more – really!) the sub-$1000 package price (I had to add external disk drive and DVD enclosures to the $745 base price of the 512gb Mini) is a fraction of what the Mac Pro cost for much the same performance. Based on just a few days’ experience the Mac Mini M4 is recommended. The new computer takes up negligible space, costs a fraction of the 15 year old Mac Pro and is equally speedy on most operations. On disk read/write operations the Mac Mini M4 is far faster.

Internal SSD upgrades: Early teardowns of the Mac Mini M4 disclose that the NAND storage resides on a removable card. However, components on that card make it impossible to simply plug in a larger storage one as the Apple design ties the card to your particular machine. However, hackers with micro-soldering skills have unsoldered the two existing NAND modules from the card, replacing them with much larger ones for very low cost, and things work well. So you can bet that an aftermarket business will shortly arise offering this service. When you realize that Apple charges $200 for the jump from 256gb to 512gb, and $600 more to go from 256gb to 1tb, there’s money to be made from competing with Apple’s greed. So if you want a 1TB drive or greater it might make sense to buy the base 256gb $600 Mac Mini and wait for the market to offer upgrades.

If you cannot wait but still want to avoid Apple’s gouging, buy an external Thunderbolt SSD of large capacity and make that the boot drive. This 1tb Thunderbolt 4 example sells for $150. For best performance, be sure to plug it into one of the three rear sockets as the front ones are not Thunderbolt capable.

Location: My M4 Mini hides in the rear of the keyboard tray. The DVD drive is at the monitor’s lower left, along with the camera CF/SD card reader. The disk drive enclosure is in the footwell of the desk:

It looks pretty ugly with cables sprouting out in all directions,
so hiding the M4 Mini at the back of the keyboard tray makes
sense. Ventilation is adequate.

The front connections include a mouse, keyboard and loudspeakers. The three rear Thunderbolt 4/USB-C sockets connect a laser printer, the disc drives, the DVD drive and the camera card reader, the latter two through a two into one splitter. Then there is the HDMI cable for the monitor and the power supply cord.

Time to upgrade: If you’re thinking of upgrading your Intel Mac to the M4 chip set now would be a good time to do that before Pig’s cretinous tariffs kick in on January 20, 2025.