Just want to note that in the case of the M1, "7 cores" binning referred to getting 7 graphics units instead of 8. All retail M1s came with all 8 CPU cores enabled, so you should be seeing similar geekbench CPU scores as all other M1s out there.Take a look at Geekbench.....
From a quick glance.... (if I'm reading it correctly).
Intel® Core™ i5 8265U, single core 1232, multi core 2492
Apple M1, single core 2276, multi core 8025
My own Apple M1 with 7 cores, single core 1695, multi core 7245 (not sure, but that may have been on battery rather than mains which might account for the lower score).
Just rerun it now on mains power and getting 2367 / 8623.
I noticed you have 1TB storage on your current PC - I got the same on the M1.
(This is currently not the case for the M4 iPad, where they for the first time have opted to disable a CPU core instead).