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Old 01-14-07, 10:03 PM   #6
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Join Date: Nov 2004
Location: Boston, MA, USA
Posts: 609
Default Re: What is the difference between x86 and IA32

Originally Posted by energyman76b

almost perfect answer. But you are a little bit wrong about the PCI/PCI Express/PCI-X part.

Yes, dumbasses (even some magazines), say 'PCI X' when they mean PCIE.

But PCI-X is not just 'PCI with 64 bit'.

Normal PCI: 32 or 64 bit, 33 or 64MHz (so 32bit/33 is the usual, there is 32/66, 64/33 and 64/66... ).

PCI-X: 64bit, 133 MHz (never 266 MHz).
There's also 100 MHz PCI-X, at least in my board

I don't think that anybody classifies a 64 bit 66 MHz PCI bus as not PCI-X, but I don't really care either.

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