Cant push duron 850 over 1060 dam it?

[ClockingOzzie]

Hi people iv got a duron 850 but i cant push it further than 1060mhz! If i up the FSB more than 106 on a 10 multipy it wont post!! Ive tried uping the vcore voltage but still no go! ive got a volcano 2 HSF and my idle temp is 39c the HSF fan is only a 5000 rpm and ive ordered a 6800rpm fan to see if that my help but any suggestions would be sweeeet so can you guys help a man thats feeling down and out from the down under land

[el]

that might be about all that guy can handle. Check the CPU database on the frontpage for other 850's to get an idea what the chip will handle.

[UnseenMenace]

ClockingOzzie (Jun 05, 2001 06:48 a.m.):
Hi people iv got a duron 850 but i cant push it further than 1060mhz! If i up the FSB more than 106 on a 10 multipy it wont post!!

Why not lower the Multiplier and increase the FSB as this overclocks your complete system.. Considering you have PC133 memory the least you should be running in my opinion is 133 mhz FSB.. I run my Duron 800 on a 140 FSB (7.5x140)

Welcome to the Forum

[WillysNut]

Once again Unseen is right. For some reason everyone says that multiplier oc'in is better but I believe the Duron's work better when you focus on FSB vs. multiplier. Give it a shot...couldn't hurt

[Justy303]

WillysNut (Jun 05, 2001 07:49 a.m.):
Once again Unseen is right. For some reason everyone says that multiplier oc'in is better but I believe the Duron's work better when you focus on FSB vs. multiplier. Give it a shot...couldn't hurt

I agree, since upping the FSB also increases the memory speed. This is very noticable i programs like pifast. BTW 1060 MHz is not a bad overclock!

[David]

u r lucky.
I cant get my '650 past 715 without it crashing all the time (lost 2 partitions, 2 heatsinks, and two handfuls of hair!)

[Rob Cork]

WillysNut (Jun 05, 2001 07:49 a.m.):
Once again Unseen is right. For some reason everyone says that multiplier oc'in is better but I believe the Duron's work better when you focus on FSB vs. multiplier. Give it a shot...couldn't hurt
I think people used to say that because with the 'old' KT133 boards you couldn't oc the fsb much past 110 - and that's if you were lucky (mine won't do past 107). However with the new KT133a chipset, we get the same chance at high fsb speeds as Intel guys, with the advantage of an unlocked mulitplier :)

Like Unseen and WillysNut said, go for a higher fsb / lower multiplier combination (eg 133x8 for 1064MHz). However, to try and find the maximum speed of the processor, you ought to try the lowest fsb / highest multiplier first - that way because you're not stressing the rest of the system you can be pretty sure it's the cpu stopping you. Try 10.5x100 and then crank the fsb up a bit till (and if) you reach 1100, then go for 11x100 and so on. To be honest I doubt you'll see much more out of that chip; most durons don't go past 1100, and a hell of a lot don't even make it there.

Once you've found what you reckon is the max speed for your cpu, try and get that from the highest fsb / lowest multiplier combo as suggested - eg if it can do 1100 but no higher, try 137x8 (1096MHz) or even 146x7.5 (1095). Hopefully that wasn't all too confusing...

[ClockingOzzie]

thanks for the info guys and i didnt find it confusing rob! I will give it a go useing the fsb in stead of the multi. I will post later today with results and keep the suggestions comming!

[ken257]

I have a Duron 750 that I just use as a test cpu for things like vmods. Why risk an expensive cpu untill the mod is proven? Anyway I had never tried to OC it before cause it is just for testing purposes. Out of curiosity I just gave it a go. I had the thing at 2.4 volts with a temp of -26C just to make a gig (1012 if memory serves) now that is what I call a lame Duron!

[ClockingOzzie]

ok guys i tried lowering the multi and uping the fsb but still no go, i tired aheap of differnt combinations. sometimes i would make it to windows but then get a registary error and it would make me restart. A funny thing is though as soon as i went past the 1.8v vcore it wouldnt post at all, but it would post a 1.8v! I have also got the option to up the vio voltage and the agp voltage. And i tried changeing the fsb to 133fsb via the mobo jumpers but when i started it up, the bios still showed 100fsb. Im considering doing the voltage mod for the mobo but i dont no where to get the correct variable resistor, Any more suggestions would be great

[rugby]

You say that when you go over 1.8v it doesn't boot? It sounds to me like a heat issue. My Duron 650 would hit 1070 but did not like 1.85v on warm days due to heat. I scaled it back to 1017mhz/1.725v and it behaved much nicer and the max temp dropped about 10oC by doing so. You might want to research better cooling in order to overclock more.

[ken257]

I have had 2 AMD's in the past that wouldn't post over 1.8v even with sub-zero cooling and others that have no probs all the way up to 2.4v. There are some cpu's in the mix that just don't like voltage.

[ClockingOzzie]

Thanks guys but i dont think it is a heat problem as i have a temp of 29c normal and a 39c load temp with the ambient temp of 24c. But i will keep trying to push it a bit further if i can! But keep the posts comming if there are any more idears. From the man in the downunder.