Found an old Asus prebuilt in a closet and wondering if it makes sense to use as a starter box or not.

Specs:

• CPU: Intel i5-3340S (4c/4t, 3rd gen, 65W TDP)
• RAM: 4GB DDR3
• GPU: GT 620 2GB
• Storage: 500GB HDD
• PSU: 300W OEM

Is this worth tinkering with, or is 3rd gen Intel idle power so bad that I’d spend more on electricity than just buying a cheap N100 mini PC? Scrap it or keep it?