The executable file is exactly same in both editions. The only difference is that the installer edition does install the file(s) into the destination folder (depending on whether it's a 32- or 64-bit system) while the portable one are just bare HWiNFO32 and HWiNFO64 executables.
So that means no additional functions in the installed version vs the portable one.
I remember seeing a thread here and the OP "screenshot"ed like a system summary somewhere. I'm curious how to access that in portable version.