P4C-800 vs P4P-800

MY friend and I have comparibles systems withthe exception of the
motherboards, his being a P4C, but his system seems to rum faster, is there
much of a performance difference between the boards?

 

The Northbridge chips on the two boards are identical. One difference
might be whether the PAT/MAM feature is enabled on the two boards,
but Asus uses a trick to allow it to run on both boards. Consult
abxzone.com forums search engine, using the search term "ctiaw",
to find some threads on experiments done on that feature. (ctiaw
is a program that can display the status of that feature.) I doubt
the difference is measurable at the application level though (i.e.
it won't make the desktop feel snappy or anything).

http://abxzone.com/forums/search.php
http://abxzone.com/forums/showthread.php?t=49613&highlight=ctiaw

There are so many Windows tweaks that could make the difference.
If your friend knows how to prune the garbage out of the OS, that
would help.

Are you using different video cards ? Is his video card overclocked
via a tweaker program ?

A reason for buying a P4C800, is if you want to overclock in
1:1 mode to a high overclock. The P4P800 will develop video artifacts
if you do this, while the P4C800 won't. This has to do with the
binning or sorting of chips at Intel. The best chips are used
as 875's and the second best become 865's. The package the chips
are put in is different (has a different number of pins), but
that doesn't change the fact that they are the same die. With the
exception of overclock potential in 1:1 mode, simply compare the
products for the included peripherals, to make a purchase decision.
If your dream is to go to FSB1000 and use two sticks of PC4000+
memory in dual channel mode, then a P4C800 board is the one to use.

HTH,
Paul

 

The P4c800 is ~5% faster than your board.

 

Thanks gentlemen, makes sense....