I'm trying to overclock my E6550 on MSI 945P NEO5 and 9500GT. I can boot and stable (6h Prime95) on 372Mhz (2.6Ghz cpu) FSB, 1:1 FSB/Memory, PciE 133Mhz!!!. Naturaly my problem comes when I try to play. Every game has artifacts. Now I'm trying to lower my pcie frequency to 100 but after I save and reboot the setting is back on 133. Even with the cpu native fsb of 333mhz the pcie is set on 123. Options for pci section are: Adjust AGP/PCI, Adjust PCIE and Auto Disable DIMM/PCI. There is no lock pcie freq or auto pcie freq.
Try either 1) CLR_CMOS jumper or 2) entering the BIOS at POST, setting the BIOS to its "Default" or "Fail Safe" settings, save and exit BIOS. Either way you'll have to re-set your custom settings, then save and exit. If these don't fix the PCIe frequency, RMA the motherboard for replacement.
Thanks for the reply treefrog but I don't think that it's bad mobo because with FSB on 266Mhz then PciE is lowered to 100Mhz. It's must be some fsb/pcie ratio integrated in it. Disappointment is that now I'm stuck from a trivial thing like pcie freq. I have the latest firmware, low temps, stable overclock and no use for gaming...
Is there any body who found modified bios for 945p neo5 that locks the f**kin pcie frequency? Or at least a site where I can learn to write new one... this is so stupid reason to left e6550 on 2.3Ghz. Even my cheep pqi 800 ram is cool at this settings.