General GPU Questions

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turkey3_scratch

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Jul 15, 2014
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I have a few questions on GPUs.

1) Where do they go on the motherboard exactly? I think PCIex16 correct? What's the difference in PCIe 1.0 and 2.0? What about PCI vs PCIe?
2) GPUs seem to have video output (like VGA) on them. Why is this? I thought the motherboard's HDMI port supplies the video output to the monitor. What then is one needed on the GPU for?
3) How does one power the GPU?
 
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1. Yes modern GPUs use PCIE x16 slots. There is a slight difference in speed but you want at least PCIE 2.0. PCI is another type of slot, it can be used for a slot for a widi adapter. Modern gpu uses the PCIE slots now.
2. Some motherboard offer displayports if the cpu has integrated graphics. If you have a graphics card then the integrated graphics is disabled so the motherboard's outputs is disabled. You would use the graphic card for displaying anything.
3. You power the graphic card by using a PCIE power cable directly from the power supply. Some low end gpu don't require any power cables but most higher end do.
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Suztera

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Mar 18, 2014
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1. Yes modern GPUs use PCIE x16 slots. There is a slight difference in speed but you want at least PCIE 2.0. PCI is another type of slot, it can be used for a slot for a widi adapter. Modern gpu uses the PCIE slots now.
2. Some motherboard offer displayports if the cpu has integrated graphics. If you have a graphics card then the integrated graphics is disabled so the motherboard's outputs is disabled. You would use the graphic card for displaying anything.
3. You power the graphic card by using a PCIE power cable directly from the power supply. Some low end gpu don't require any power cables but most higher end do.
 
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