According to a competition programming site, where users can submit single source files to be compiled and run, "programs are run on a modern processor but times are scaled to a 700 MHz Pentium III ... with 16MB datasize limit and 1MB stacksize limit".
How can I estimate this scaling factor when running on a modern(ish) processor, such as a i3-8100 CPU @ 3.60GHz? Is this even possible, or would runtimes vary too greatly due to things like cache, instruction set, different clock speeds, etc. too be able to get a useful number?