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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?

Risposto! View the answer Anch'io ho questo problema

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


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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Soluzione Prescelta

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


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

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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mchlgrblsk sarà eternamente grato.
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