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Phase One Capture One 20: Negligible CPU Core Utilization while Importing Images, Regenerating Previews + Inscrutable GPU Usage

Negligible CPU utilization is a minor footnote compared to the much more serious pain points in Capture One 20.

Ignoring cores

I made a new catalog several times, because I could not believe how Capture One 20 wastes nearly all the CPU cores.

I don’t take kindly to an application that turns my $15000 computer into a crappy detuned space heater, and a poor one at that since so few CPU cycles are used that not much hot air comes out of the butt-end.

Witness below for Import that C1 Pro uses a bit more than one of 16 CPU cores (32 virtual cores). That means a CPU utilization of about 7% at best. These files are on a PCIe SSD capable of sustaining over 6 GB/sec—I/O speed is not an issue.

While Activity Monitor shows 0% GPU usage, I suspect that the GPU is actually being used substantially, and there is a bug in Activity Monitor. So I’m going to give Capture One Pro the benefit of the doubt for now.

Still, 15 of 16 CPU cores are just sitting there idling. Compare to Lightroom CPU core usage.

Bottom line here is that if the GPU is being used substantially, you’ll want a much faster GPU than the base AMD Radeon Pro 580X, e.g., the AMD Radeon Pro Vega II. And Phase One has to get its act together on not wasting computing power in an outrageous way like this.

Capture One 20 Import on 2019 Mac Pro: outrageously poor performance

Below, C1 Pro uses less than 3 CPU cores while regenerating previews, averaging about 2.6 cores. That’s 2.6 out of 16 (32 virtual cores), so at best 16% CPU utilization—84% of the computing power is just idle. Again, maybe the GPU is really busy and Activity Monitor is just buggy and doesn’t show it being used. But the point is, my very expensive 16-core CPU is almost entirely idle.

If the GPU is indeed being used intensively, you’ll want a much faster GPU than the base AMD Radeon Pro 580X, e.g. the AMD Radeon Pro Vega II. But you also want Phase One to get their act together on using CPU cores.

Capture One 20 Regenerate Previews on 2019 Mac Pro: outrageously poor performance

MacPerformanceGuide.com
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