Not the most powerful model but it's pretty well built out. My current computer is a fairly recent iMac 5K, with a 3.8GHz i5, 25Gb of memory and a Radio Pro 580 GPU. Once that's done, in Photoshop, you select all of the layers and run Edit->Auto-Align images followed by Edit->Auto-Blend layers choosing the stacking option. Photoshop creates a file and loads each image into a separate layer. This fires up Photoshop and hands the 45 images. To run the Photoshop test, I select the 45 images in Lightroom and then choose Photo->Edit in->Open as Layers in Photoshop.
That's actually pretty good, but there's some sharpness falloff on the flowers to the right at the back.
