As such, you can keep working as is if adequate for you. If you don’t need high-end graphics, then with scenario 2, you won’t even notice anything wrong. But, the heavy-duty video rendering won’t be available when needed which is where the discrete, more powerful, graphics card comes in. Can you just downgrade to your integrated graphics card? Well, in this case, your MacBook is already prominently using the on-board integrated chip. Scenario 2: Your discrete graphics card goes belly up. In turn, your discrete graphics card is moot due to not being able to toggle over to it. Well, on this one, if your main ingrained graphics chip on the board fails, your logic board will be rendered useless also. Can’t you switch it to the discrete, isolated graphics card.
Scenario 1: Your integrated (embedded on the logic board) fails. Let me give you a few scenarios to help answer this. Good question, and we’ve looked for shortcuts too on this. Logically speaking, if you have two graphics card on your Mac, can’t you just use the one that’s working? The loaded high-end models will typically have both. The cheaper models contain these integrated GPU’s because they use less power than the discrete, power-hungry video chips.
Some MacBooks like the MacBook Air and the MacBook Pro with and without the Touch Bar all come with integrated graphics, or built-in graphics where they are embedded into the logic board. Technically speaking, a GPU is a graphics processing unit. You do have a MacBook logic board that needs repair, but 90% of the time, that means that specifically your GPU has failed and you either can’t power up your Macbook or there’s no video output. Many times, Apple will say you have a failed logic board. The dreaded GPU failure on a MacBook is common.
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