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Epox 8KTA2 , can't do multiplier over 10.5x , why?

D

Dizway

Senior member
Hello,

I got an Epox 8KTA2 w/ a 900mhz tbird. I have the L1's connected with a pencil. I can do 9x , 10x and 10.5x but when I set the multiplier to 11x or 12x, it shows as 900mhz. It runs at 1050 @ default voltage stablely. So i'd like to push it to 1100mhz to test it. I had a KT7-RAID last week (which i returned) and with the same CPU I was able to clock it at 11x 1100mhz, it posted but didn't boot windows. Is it my pencil trick or is it the mobo/bios? Thanks

Diz
 
It came with the latest bios already. And their website says the board supports up to 1100mhz. Hmm... any other ideas? Should I redo the pencil or do you think it's something else?

Dizway
 
Your tbird just might not like to dance at anything higher. Let's hope it does though. Retry the pencil, it's the easiest thing to do. What cooling are you using? Have you upped the voltage already? (not that you have much room to do that)
 
You think so? I don't know. It worked on the KT7-RAID. I've redone the pencil 3 times already. I would think that if it doesn't like to do 1100mhz it just wouldn't POST instead of downclocking to default. I'm at 1050mhz now @ 1.775 vcore. I haven't played with the FSB yet since i'm still testing stability at 1050. I'd really like to try 1100 @11x100 though. No chance... not sure if its the cpu or the bios. Btw i'm using a standard hsf w/ radio shack paste. Thanks for your thoughts.

Dizway
 
Definitely change out the generic HSF. You've aalso got ssome room to go with the voltage, up to 1.85V, but get a new HSF first.

Just because the KT7 let you post but not boot to windows means very little. I had an old P100 that would only do 120, but occasionally would go at 133. Wasn't necessarily a cold boot, or a cold day, or any single factor I could find. Just felt like doing it when it wanted to. Also Abit boards tend to allow slightly better overclocking at the sacrifice of some stability. Epox are traditionally more stable, and slightly above average overclockers.

You may be able to squeeze that extra 50MHz out of it with more voltage and a better HSF, but maybe not. You seem to be near the limits of your chips core. Let us know what you're final results are.
 
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