You did not provide the lspci and other required info as mentioned on the wiki, but with a NVIDIA chip I can be pretty sure when I say no, as they do not provide the necessary info for there chips to be supported.
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"Larry G. Vidrine" <papalar@illicom.net> wrote:

I have an Asus K8N-DL mainboard with nvidia CK-804 chipset. I canonly find A8N 
boards with CK-804 chipset in the list of supported boards.

My question is: is my mainboard supported by Coreboot?
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