OT: PCI-X Bus Speed no set correctly on PE4600

Marc Schmitt schmitt at inf.ethz.ch
Thu Mar 6 06:45:00 CST 2003

I just checked on Qlogic's homepage, there it says the QLA2310 is a 
66MHz PCI-X card. The Qlogic Quick Start Guide reads:

100-MHz PCI-X models. The QLA2310 series supports 100-MHz PCI-X and is 
backward compatible to run in standard 66-MHz and 33-MHz PCI systems.


I contacted Qlogic support, this is quite misleading.


Marc Schmitt wrote:
> Hi all,
> According to the manual of the PE4600 it has:
> Hot-pluggable: 6 x 64-bit/100MHz PCI-X slots
> Yesterday I put in a QLA2310 FC adapter, which is a 64-bit/100MHz PCI-X 
> device. I placed it in slot 4 (bus 2) where no other device is that 
> could possibly force the bus to 66 MHz (slot 5 is empty). Indeed, in the 
> BIOS, the mode for slot 4 shows PCI-X, but the frequency is 66MHz 
> instead of 100MHz.
> I could nowhere find how to change this, anyway, this should be 
> autodetected, imho.
> Anyone has an idea how to fix this? I have the latest BIOS installed (A08).
> Regards,
>     Marc

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