That’s something that might be useful to post here somewhere, if it hasn’t been done already – a table showing typical scan times for various processors, amount of files, and scanning mode. There’s been “is this normal time?” questions like this one posted all over.
My own contribution to that table: with my Celeron 2.2 ghz, a scan of 2.3 gb (according to the report) currently runs about 11 minutes for thorough-including-archives, and about 7-1/2 minutes for standard-including-archives.