Processor, SSD, and at least 8gb of ram as Arris mentioned above.
I'm assuming you're just using it for general usage and work? If so, an i5 (8th gen), ssd (storage depends on you), and 8gb of ram is good.
processor and ssd
make sure you've got at least 8 gigs of ram though.
graphics shouldn't matter too much depending on what you'll be using it for.
