Ok I've never really tried overclocking my 3800+ to bad until now and it always used to be I'd hit a wall and just give up cause i wasn't a big deal. Well i downloaded cpuz the other day was trying quite hard to get past this wall and then i noticed every time i changed the multiplyer and rebooted and loaded up cpuz it would say the multi was back at stock settings.

I'm thinking maybe the cmos battery might need replacing but that is about the only idea i came up with.

So a little help for a newbie here guys.

Thanks

you can only choose lower multi , higher are locked

Quote: Originally Posted by Razel Ok I've never really tried overclocking my 3800+ to bad until now and it always used to be I'd hit a wall and just give up cause i wasn't a big deal. Well i downloaded cpuz the other day was trying quite hard to get past this wall and then i noticed every time i changed the multiplyer and rebooted and loaded up cpuz it would say the multi was back at stock settings. I'm thinking maybe the cmos battery might need replacing but that is about the only idea i came up with. So a little help for a newbie here guys. Thanks

The higher multipliers are locked as they are on most modern processors (AMD's black edition and intel's extreme edition procs are unlocked IIRC). Back in the good ole days with older athlon/duron procs you could do the pencil trick which entails drawing a line with a pencil to make electrical contact with two points on the processor but it doesnt work on amd cores newer than the thunderbird i think (this is going back to like 2001). The rest are harder to unlock and there are a few crazy ways it can be done. There was one where you could join two pins with a strand of copper wire. I have no idea which ones and i've never tried it and don't recommend it. You might google it and find some articles though if you're brave. Otherwise it's FSB overclocks for you.

technically it would be ht overclocking.with a 3800+ i'm assuming it's a socket 939.there are other adjustments to be made besides the ht speed and voltage, but off the top of my head i can't remember them.

fyi, a dead cmos battery would show by resetting the clock/date (along with every other setting) to bios defaults when the machine is unplugged

Quote: Originally Posted by piscikeeper technically it would be ht overclocking.with a 3800+ i'm assuming it's a socket 939.there are other adjustments to be made besides the ht speed and voltage, but off the top of my head i can't remember them. fyi, a dead cmos battery would show by resetting the clock/date (along with every other setting) to bios defaults when the machine is unplugged

True. For some reason I was thinking it was a socket A.

So lowering the mulit is not a good thing. OOOk That makes sense but still cpuz says a different multi then what i set in the bios.

Why is that i see other ppls pics of cpuz and the have the multi lowered but still have a higher frequence. Cause isnt the freq figured out by the external clock times the multi? I've a read a few things on oc'in so i understand some of this stuff I think. lol

I thought that is what happened when the cmos went out but thought maybe it had just enough juice to keep that but not other things.

Oh it is a skt 939 proc and I think it is a san diego core. Do these oc well or no? Also what is a safe voltage on the cpu and ram?

Thanks again guys

quick guide to 939 o/c'ing
Athlon 64 Guide - Extreme Overclocking

lowering the multi is not really a bad thing.i have a socket a 3000 mobile that i recently changed mobos on.the stock setting is 133(266) x 16.5, with the new mobo, it would lock.change it to 200(400) x 11 and it runs fine.while technically overclocked, all other components are running at stock speeds since 200 is a standard bus speed.

by pushing the htt setting, the other components get o/c'd also.if you have dividers for pci,vid,and memory, use them to control how far out of spec everything is running.

that said, the best place to start for a good overclock is a good mobo and other components.this is why oem bios usually don't have the options for o/c'ing.the cpu my be ready for it, but the rest of the system isn't.

Thanks that guide seems a little more simpler and easier to understand than some of the others that I have found. +rep for pisci if I can.

My mobo is a abit An8 32x so I think it's ok for trying to overclock. Even though I was looking right now and I don't have any dividers that I can see of but oh well not much I can do about that.

Thanks to everbody else too.

under the oc guru of your bios, there is an option to set the pcie clock.use it to lock the pcie bus speed @100mhz.
under advanced chipset features are options for changing the ht multi.not really useful unless it does decimal rather than whole numbers.you can also manually set your ram timings here.