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[iansutton91]

GPU = Graphics Processing Unit. It is where the video comes from. It is not the same as CPU (Central Processing Unit) and does not replace it. You need both in a computer. If you don't have a separate video card then the GPU is built onto the mother board and shares RAM with the GPU and probably the Audio system as well. So you can probably subtract at least 512 to 1024 from the total system ram as that will be used by the video system and not be available for running games.

Most motherboards allow you to turn off a built in GPU if you install a separate video card. This allows the system RAM to be recovered for use by the CPU again.

Thank you so much! I've got quite a few decent components in line on ebay.