What does PCIe 2.0 x16 (x4 mode) mean? - General Discussion - Linus Tech Tips

What does PCIe 2.0 x16 (x4 mode) mean? - posted in General Discussion: I know what PCIe 2.0 is, but what is the (x4 mode)? ... I have personally experienced Generation 1 PCIE 1.0&2.0 in 1x and BF3 Maxed is 50-80fps but cripples down to 28fps for long ...

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