ASUS P5B-Deluxe; Problems & Fixes

[Olivier]

Works at 100 for me but you could try lower and keep the x16.... and try setting Sb V and NB V on fixed settings rather than auto.

[drac89]

tried 94 to 105 from clockgen from windows and no results, i also fixed voltages for Nb and Sb, and i definitively have this problem because i realised that in everest it says Type of Bus :PCI Express x16 @ x1. WTF? i cant understant this, this mb is cool but this thing sucks! i cant understand why asus has never fixed this thing! at least i know isnt the memory, its strange but this only happens when more than 430 FSB

[chuckbam]

tried 94 to 105 from clockgen from windows and no results, i also fixed voltages for Nb and Sb, and i definitively have this problem because i realised that in everest it says Type of Bus :PCI Express x16 @ x1. WTF? i cant understant this, this mb is cool but this thing sucks! i cant understand why asus has never fixed this thing! at least i know isnt the memory, its strange but this only happens when more than 430 FSB

What bios are you using?

[drac89]

bios is 1004
now i put 90 pci-e and i put higher voltages ( i didnt need them to be stable) and everest marks @X16. I launched a game in which i had sound corruption and lag and it seems to be fine for the momment. I will be testing it.
PD: i put the latest bios 1226 and i had the same problem with the pci-e X1 and i put back this old one because i cant boot past 440 FSB.

[chuckbam]

bios is 1004
now i put 90 pci-e and i put higher voltages ( i didnt need them to be stable) and everest marks @X16. I launched a game in which i had sound corruption and lag and it seems to be fine for the momment. I will be testing it.
PD: i put the latest bios 1226 and i had the same problem with the pci-e X1 and i put back this old one because i cant boot past 440 FSB.

That may be the problem. That is an old issue that has been fixed by a bios update. I would go with #1219 or 16
bios 1226 has an OC problem.

[drac89]

That may be the problem. That is an old issue that has been fixed by a bios update. I would go with #1219 or 16
bios 1226 has an OC problem.

Anyway, updating to 1219 is worthly apart from that?

[jonny_ftm]

Anyway, updating to 1219 is worthly apart from that?

Let's be clear. ASUS bios never solved the PCI-E x1 issue, this is not true. It is a hardware limitations fixed in new PCB releases. I tested two P5B Deluxe, same C1 revision, one old, the other new. The new one, doesn't have the problem. Note also taht it is not a NB revision bug, as many C2 boards also have the problem. It is suerely a problem in the PCB design or elsewhere.

The only thing causing it on those defective PCBs is the NB voltage above 1.45v. Starting from 1.55v it happens, this is a well known issue since the begining. I tried all bios versions, it won't solve it. The only solution is a poweroff by removing the electric plug completely. Any soft reset will give the error again.

My two cents, live with unplugging the power cable when you reboot, or RMA it, you could get a new PCB bug free