8K7A o/c question.

[Jittles]

I tried this yesterday. I got the new bios with the 1/5 divider and set my multiplier to 8 and my bus 166 so see what happened and it rebooted, stayed black for a second then finally POSTed back down at the default FSB of 133. So I had 1066 instead of 1333 like it should have been. Is this normal? If a component can't handle that kind of O/C would it automatically reset itself, or is there a setting I am missing? My RAM is 512MB PC2100 from Crucial.

 

[Mungla]

Jittles, try setting the FSB to 170MHz. Also, what memory timings are you using? For starters, allow the BIOS to assign the memory timings, and set the 'performance' option to Normal.

 

[Jittles]

Yeah, I thought of the memory thing first, and I did set it to normal. Still does this. I can get into windows and as far as I can tell 100% stable at 1440(10 x 144) but not at 8 x 166 = the default 1333. My main question is why is it waiting so long then rebooting without the O/C?

Maybe if I up the DDR voltage?

 

[Jittles]

buh buh buh buh buhbuhbuhbuhbuhBUMP!

 

[formulav8]

Look into your power supply

 

[bozo1]

<< My main question is why is it waiting so long then rebooting without the O/C >>


Because you are running at a FSB that the system won't post at - either the chip can't handle it or your memory can't handle it, etc. (Not saying that you can't make it work by messing with your RAM timings, CPU voltage, etc.) It takes a long time because once it realizes this, it reboots with the default FSB saving you from having to clear your CMOS manually. It's a feature. Mine does the same.

 

[Jittles]

Thank you, precisely what I wanted to know. I haven't had much chance to play with it but I am getting a delta fan (my computer is in a different room so I won't mind the noise) and the SX830 case w/4 fans.

 

[Courtland]

Do you have your ram voltage at max, +0.4, becaue if not you have no chance of getting your memory to run at that high of a fsb. +0.3 might work, but I would just max it out.