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> Battery life tips: 1. get the simplest screen (FHD instead of 4K, 90Hz...). 2. don't get an integrated 3D card.

This sounds counter-intuitive. I thought integrated graphics used less power than a discrete amd/nvidia card.

Yes, I can only imagine the parent made a very unfortunate choice of wording, meaning "integrated" as in "integrated into the laptop," and "3d card" as "discrete graphics card." You definitely want A graphics card for battery life (not that you can buy a laptop without one) and you want it to be one integrated into the CPU.

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