-P4C800E-DLX has Intel ICH5R raid controller in addition to the promise one.
P4C800-DLX has only the promise one
-P4C800E-DLX has the intel CSA gigabit controller connected to the chipset
at 266MHz. P4C800DLX has a standard 3com gigabit controller connected to the
usual PCI bus (133 MHz).
By the way I own both of these two MB. they work fine both.
If you open you Asus Update program, it will give you your bios info. There
were just a couple of differences between the boards, I think the most
notable was the southbridge chip with raid on it (ICH5R)
-P4C800E-DLX has Intel ICH5R raid controller in addition to the promise
one. P4C800-DLX has only the promise one
-P4C800E-DLX has the intel CSA gigabit controller connected to the chipset
at 266MHz. P4C800DLX has a standard 3com gigabit controller connected to
the usual PCI bus (133 MHz).
By the way I own both of these two MB. they work fine both.
I looked up the P4C800 dlx specs and it says that there is the ICH5
controller and the Promise is optional.
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