I have been using DxO products for years. Yesterday I installed the trial version of PhotoLab 4 to try it out before upgrading. I am working on a desktop which I rebuilt in 2012 with an Intel i5-2380P CPU. Since then I have been using Lightroom, Photoshop, DxO Optics Pro and PhotoLab, and the Nik collection without any issues. Initially it had 8 GB which I increased to 16 GB a few years ago when Adobe improved Lightroom's performance in a new release.
Last night I processed a photo in PhotoLab 4 with DeepPRIME turned on. On exporting the photo to disk the CPU cores started to overheat, at one point all four of them. This morning I ran a test with two of my old nightclub photos taken on my K20D (now long gone) shot in 2010 at 6400 ISO. First in PhotoLab 3 with PRIME turned on, then in PhotoLab 4 with PRIME, and finally in PhotoLab 4 with DeepPRIME. PRIME in PhotoLab 4
seems a bit better that the PhotoLab 3 version; and the DeepPRIME version was the best, somewhat less noise and slightly sharper. But the overheating of all four cores in my CPU occurred in both the DeepPRIME exports (88, 91, 90, 88 deg. C at one point).
From the website
CPU Temperature Overheat | PC Gamer: "Overclocking temperatures could in theory go as high as 90°C while still being ‘safe’, and the max temperature for many CPUs is listed in the 105-110°C range. But for long-term use, you’re much better off keeping things below 80°C in general and only pushing up to 85°C at the most."
Although I like the interface changes made to PhotoLab 4 and the DeepPRIME feature, I think I'll pass on it until I get a new desktop or rebuild this one again. I won't even try it on my older hand-me-down Surface 3 tablet. I am writing this as a bit of a warning to other users in this forum. PhotoLab is a great product, but the latest version appears to need more-than-usual processing power to get much use of the deepPRIME feature.
Added: Or at least, a newer more powerful CPU than the one I have now; even though it has had no issues up to now.