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Old July 9, 2009, 01:27 PM
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Your current board may only be running each card at PCI-E x8, but it using the PCI-E 2.0 spec, which gives twice the speeds of the older PCI-E. So in a sense, you've still got the equivalent of x16 on an older board. Performance gains from going to a x48 chipset would be very minimal.
i7 2600K | ASUS Maximus IV GENE-Z | 580GTX | Corsair DDR3-2133
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