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SPDIF Audio problems....

566 Views 3 Replies 2 Participants Last post by  luc2010
Hopefully someone can help me with this one. I just hooked up a 9800 GTX+ into my PC rig. Well I hooked up my SPDIF out from mobo to the 9800 GTX and have HDMI running to TV at 720p. I got video and audio and everything is fine. The problem is when I decided to overclock my 6850 3.0GHZ to 3.6. I got no audio anymore on TV.

I unclocked the CPU and audio was back again. This happens with anything over 3 GHZ(which is my CPU stock clock.) I thought maybe this had to do with the onboard realtek HD audio and overclocking CPU. So, I bought a SB X-FI PCI. Hooked this up to another video card, 8800GT with HDMI. I also tried another HDMI cable but still nothing.

What can I do to get SPDIF to work while I am OCing CPU?

GA-P31-DS31 mobo
Intel Core 2 Duo E6850 (3.0GHZ)
Nvidia 9800GTX+
DDR2 6400 2 GB
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Is the PCI-e speed locked at 100mhz?
No, I tried booting the PC with manually setting the PCI-E to 90 MHZ all the way up to 110 MHZ. The only thing that seems to boot up is Auto. This I don't know what to do. Any help to try and manually set this?
OK, found out why it won't boot without auto. I found this on another board.
Budget boards such as P31 or P43 will need PCIE set to above 100 for overclocking generally. Auto is not advised because when you raise the FSB the PCIE Freq will also increase automatically.

I suggest 100-110 as a safe range, but anything above 100 can damage your board/GFX Cards, and Hard drives. So it is all up to you, but manually set it for sure.

If you want to run 400 FSB, and have to use 118 I do not suggest that or you will damage something for sure. I suggest a new board, P35 if you do not have much money, or P45-UD3x models are all around $90-120

Apparently I would need to change my PCI-e to 121mhz to match 400mhz fsb. This could cause some damage. So looked like I will be buying a new board.
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