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P5B Deluxe: 16x PCIe slot running at 1x!!!

B

Bop

2[H]4U
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Oct 1, 2003
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I noticed my 3dMark score and gaming performance was terrible so I did a whole bunch of things to see if it was my graphics card but I loaded up CPU-Z to discover that the slot is running at 1x!!!

I cannot find anything in the BIOS to force 16x... I don't know what to do.

Can anyone help me with this?
 
Are you overclocking? What BIOS revision are you using? This is a known issue with the P5B Deluxe and there doesn't appear to be one universal fix. For me, I had to manually set the Northbridge and Soutbridge voltages to fix it.
 
Yup, PCIe freq and NB voltage appeared to be the culprit. I had to up the PCIe frequency to 115mhz and then up the NB voltage to 1.6v so it'd boot at that frequency.
 
Mine does this too.

Run PCIe at 101mhz.

Make sure your FSB is AT LEAST 401mhz, as there's a wall between 350 and 400.
 
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