Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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What is a GPU and what does it do?

What does GPU stand for?

What guide should be followed to replace it?

What part should be ordered to replace it?

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It might be helpful trying to understand why you think you need to replace it. Can you explain your reasons.

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I have vertical colored lines when I boot up. I had white screen, then replaced the logic board, but now I've got vertical lines.

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Solución Elegida

GPU stands for: Graphic Processor Unit. Technically just the raw chip.

Often we use the term GPU Board, GPU Card or Video Card to describe the full assembly

Here's the guide: iMac Intel 20" EMC 2133 and 2210 Video Card Replacement

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What the GPU does, is it renders all the stuff. Or, it turns the computers electrical signals into a visual that can be seen on the screen.

So its like

COMPUTER SIGNALS --> GPU --> DISPLAY

A GPU turns Computer signals into signals a display can recognize and display.

I worded it to make it simple and in my own words

Wikipedia article

Update (01/17/2018)

Heres a nice little block diagram of a PC

Block Image

image found on www.graphicsbuzz.com

why am I including the source? I'm not a sponsor or anything. I don't want to get called out for accidentally infringing copyright again. Also that website is sketchy and gives you Microsoft support scams. Don't go there.

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