Can you please explain with what specs do you refer a PC to be a Potato PC ?
These days the RAMs and Hard disks are quite cheap and if you have at least 4GB Ram and 250 GB hard, you should still upgrade to windows 10.
Not totally obsolete, but specs are at least 5 years behind with i7 4710-MQ and GT740M. Struggles to play some titles even on low settings.
Still, the Windows 10 minimum requirements on Microsoft's website are pretty reasonable:
1 gigahertz (GHz) or faster processor or SoC. RAM: 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit.