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The original jpeg (attached) is all single lines but some of the paths have ended up loops that I need to delete half of the loop. If you look at the file you will see what I meant by duplicate paths in an earlier post. It started with ~18,000 nodes and I am now down to around 15,000. It is a puzzle that I did a trace bitmap on and I am now cleaning it up. I think I will have you look at this file. If you can't share the file itself, at least tell us how big it is (MBs). I would say these days, 4 gb might be close to the minimum, considering any size file. Just based on experience, I would say 2 gb ram would be the very bare minimum, but only if you only work on very small files. Just because it annoys me, and I had the very same question 10 years ago, when I first started to learn how to use Inkscape. If I ever get up my nerve someday, I might even make a formal request for minimum requirements to be set. To more directly answer your question, I've never seen any minimum requirements for using Inkscape.
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Here's an article/tutorial I wrote, which tells about some things you can do, to keep working in a very large file. Inkscape does run faster on Linux systems, as far as I understand. So if you're not doing the same steps, it might not necessarily be a fair comparison. When you're comparing the 2 computers' performance, are you performing the same tasks with Inkscape? There are ways you can use Inkscape, to either help avoid the performance issues, or keep you working in a large file.
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