Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Whats the difference ?
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Bandit4575   12-06-2008 at 10:38:29 PM

PCI Express 2.0 x16 and PCI Express x16

 

Will PCI Express 2.0 x16 fit in a PCI Express x16 Slot?

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4745454b   12-06-2008 at 11:11:11 PM
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Seeing as you asked, here is the difference. In PCIe 1, each lane has 250MB of transfer space. The slot itself can also provide 75W of power. For PCIe 2, everything is doubled. (500MBs per lane, 150W of power.) They wanted to keep everything backwards compatible, so if you plug in a PCIe 1 card it won't blow up.

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