P55 chipset and its PCI Express "2.0" support

IntelUser2000

Elite Member
Oct 14, 2003
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http://techreport.com/articles.x/20241

Those familiar with the P55 will remember that it, too, has PCIe lanes claiming second-generation status. But those lanes run at half speed and offer no more bandwidth than gen-one PCIe links. The P67's PCI Express 2.0 lanes are cranked up to the standard's full 5.0GT/s data rate, setting up a three-way comparison with the P55 and AMD's SB850.

I didn't know this. So maybe we'll be ok with only having x8 slots with the P67.
 

tcsenter

Lifer
Sep 7, 2001
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Only the peripheral PCI-E lanes are 2.5GT/s PCI-E 2.0. The PEG interface lanes are 5.0GT/s.