That's easy. Intel only does integrated graphics which are always subpar compared to a dedicated GPU. However, that really only matters if you're gaming or doing some kind of high end video editing with GPGPU functionality. Odds are if you fit into either category, you'd already know this and wouldn't need to ask the question any more than you'd even be considering a Celeron or Pentium based unit, so I'd say don't worry about it. Intel graphics are generally good enough and because they're generally so underpowered relative to nVidia and AMD offerings, they're much more battery friendly on laptops.