Need help with Celeron 566 overclocking. Thanks

[Newb Mo]

Hello everyone, I am a newbie to overclocking. :D I have a computer that I want to overclock. It's a celeron 566 on an Abit VH6 motherboard, I have pc133 ram installed on it.

I've overclocked it to about 640mhz (8.5x75) and 707mhz (8.5x83) but because my motherboard doesn't allow me to overclock the FSB by one points at a time, I can't seem to get it stable. I can set the FSB to 75, and 83mhz but anything above 83 can't boot into windows :(. Also, if I set the FSB to 75mhz, the computer will freeze a short while after it boots up but at 83mhz it seems stable up untill I use a graphic program or play some games. I have a PCI video card installed (Voodoo 5500), is this the problem? Should I get an AGP card and if I do which one works best with overclocking if there is one?

My temperatures are also really low, they are almost always at 25 degreese celcius at stock speed, even when I play games they don't go any higher than 30 degreese, so temps can't be the problem... I've also ran SiSoft's BurnIn Wizard for over 4 hours when the CPU was overclocked to 707mhz (the system and CPU temps never went above 35 degreese celcius) but it didn't freeze up at all untill I opened Internet Explorer!! What gives? I'm thinking it is either my network card or my Video card.. can this be the case??? I've also tried running BurnInTest 2.2 but after about 5 minutes my computer freezes up. Can someone please help me, Thank you very much.

[Super]

Hi and welcome to the forums!

Did you try to bump up the voltage? It will give you the stability you need. (make sure you got proper cooling, yes I am stressing it because a lot of people killed their chips by not having good cooling, but your temperatures seem good. My celeron 600@900 does everything ok until it hits 43'-45'C)

Your voodoo might be a problem at higher FSB speeds, but now I don't think that you have to worry about it.

:)

[Newb Mo]

Thanks for replying so quickly.

I can only put my voltage up to 1.70 on this motherboard for some reason, originally it's at 1.50 but I bumped it all the way up to see if that was the case and it still freezes up like I was saying earlier. I believe I have proper cooling, I have 5 80mm fans in the case and 1 90mm fan on the side.:cool: I bought a Therm. Dragon Orb3 for the Heatsink before I started overclocking just in case.

For some reason if I try to hook up this heatsink through the Fan Connector on the mobo, the heatsink won't even start up so I have it connected with a Mollex(?) Splitter.

I just thought of something, it could be my motherboard?? Maybe? :confused:

[deez]

You should run your machine with just the vid card and see if it locks up....if not install components one by one and that will let you know what is causing the lockup if it is PCI related.

Also are you using thermal grease...your temps sound good so you should be able to hit 850 with that chip

Does your board have a setting for 92Mhz FSB with a 1/3 PCI divider...my BP6 does and I was able to run my 566 at 789 for a while at this setting at 1.7v In order to get to 850 (100Mhz FSB) I had to wire my CPU to get 1.85v

[[OC]Lucifer]

Im not trying to step on anyone's feet but, if the system doesnt clock well with all your hardware in. Then it would be of no use removing hardware you need to hit higher speeds. Lets say your soundcard is keeping you from hitting a gig with your p3-700 100mhz FSB. Sure, now you got a gig, but no soundcard! On the other hand, if you knew it was the soundcard you could buy a SBLive or a clocking compatibile card and be set :)
Lucifer

[The Doors]

Hi Newb Mo, welcome to the Forum,
I think that your chip needs VidPinning for an higher voltage, generally it works stable @1.8-1.85v, take a look to this link for more info http://www.hardocp.com/articles/intel_stuff/bumpvoltage.html or http://www.wildandyc.co.uk/vidpinfrm.htm

I hope it helps you ;)

[deez]

ummm....lucifer yeah that was my point and at 100FSB there should be no PCI conflicts since PCI bus will still be at 1/3...just the in between tweaking where you need to pull stuff so you dont fry your cards or have unnecessary crashes

[Newb Mo]

Thanks for replying everyone. I will try with just my video card like you stated deez, I also managed to get an old AGP card from my cousin so I'll try that out later today if I have time.

My motherboards External Clock settings are kind of strange, I will list them all so you can see what I mean because you said the PCI bus will still be at 1/3 but by default my mobo has it at 1/2. Here look:

66MHz(1/2), 75MHz(1/2), 83MHz(1/2), 100MHz(1/3), 103MHz(1/3), 105MHz(1/3), 110MHz(1/3), 112MHz(1/3), 115MHz(1/3), 120MHz(1/3), 124MHz(1/3), 133MHz(1/4), 140MHz(1/4), 150MHz(1/4)

Those are the only settings I can set it to. I can't go up anywhere near the 100mhz point or my system won't boot into windows, this is problably because I can't get my voltage up higher but I'm not trying to get my CPU up to 850 right now, just trying to keep it stable at 707. Should I attempt to bump my voltage up MORE for 707mhz or is 1.70v enough because deez was saying he had his CPU at 789mhz with a 1.70v setting.

I have thermal tape on my heatsink and I have a Santa Cruz Turtle Beach Sound Card installed with an Intel Anypoint Home Network card installed. Those are the only PCI cards I have in the system not including the Voodoo card.

BTW, in the case that I DO have to bump my voltage settings up with VidPinning like The Doors was saying, can I just use a computer wire from say, an LED connector?

[deez]

Strange settings...nothing between 83 and 100. But the first thing you need to do before messing with your voltage is go out and get some thermal paste or heatsink compound. It makes a huge difference and you will probably stabilize your system at 707 just by doing this. You can pick some up quick and easy at radio shack for 2 or 3 bucks.

Before applying thermal grease first remove your heatsink and get all that thermal tape crap off with alcohol or tronic clean. Also remove your chip and clean that off too. When you get your chip nice and clean put it back in your system then apply thermal paste from the tube directly to the chip and put just enough to spread over the blue die on the chip. Too much will make temps increase. Then apply heatsink.

Some people swear by arctic silver and other thermal compounds but any thermal grease is better than a thermal pad. I've used radio shack compound to OC a cele 500 to 600....a cele 566 to 850 and a Duron 900 to 1.2

[Newb Mo]

ok, thanks deez, I'll try that out also. Thanks again.

[deez]

oh yeah and every CPU is different so what works for one will not work on all.....my roommate had his 566@850 with 1.5v and a golden orb

When I wired my chip i used a single strand from an IDE cable and stripped the wire. I also used a magnifying glass, stats, small sharp scissors and had a lot of patience.

You shouldn't need to wire to hit 707 and 83(1/2) will put a lot of strain on your PCI devices. I fried a soundcard at that setting

[JetMech]

Originally posted by Newb Mo
Hello everyone, I am a newbie to overclocking. :D I have a computer that I want to overclock. It's a celeron 566 on an Abit VH6 motherboard, I have pc133 ram installed on it.

I've overclocked it to about 640mhz (8.5x75) and 707mhz (8.5x83) but because my motherboard doesn't allow me to overclock the FSB by one points at a time, I can't seem to get it stable. I can set the FSB to 75, and 83mhz but anything above 83 can't boot into windows :(. Also, if I set the FSB to 75mhz, the computer will freeze a short while after it boots up but at 83mhz it seems stable up untill I use a graphic program or play some games. I have a PCI video card installed (Voodoo 5500), is this the problem? Should I get an AGP card and if I do which one works best with overclocking if there is one?

My temperatures are also really low, they are almost always at 25 degreese celcius at stock speed, even when I play games they don't go any higher than 30 degreese, so temps can't be the problem... I've also ran SiSoft's BurnIn Wizard for over 4 hours when the CPU was overclocked to 707mhz (the system and CPU temps never went above 35 degreese celcius) but it didn't freeze up at all untill I opened Internet Explorer!! What gives? I'm thinking it is either my network card or my Video card.. can this be the case??? I've also tried running BurnInTest 2.2 but after about 5 minutes my computer freezes up. Can someone please help me, Thank you very much. I had the exact same experiences you have when I overclocked my 566 celly. 707 max. Agp overclocking turned out to be my prob or should I say side band addressing while agp overclocked. For some reason ATI video cards do not penalize the user for pushing the agp bus with sideband addressing turned on. I was able to reach 100mhz bus after putting an elcheapo Expert 98 card in the system. I never tried a better ATI board. Put my money into a 700E coppermine and motherboard. In your case however I would upgrade the motherboard to one of the 815e series like the Asus CUSL2-C ($115.00). This will put you inline for later upgrades. It will also give you a 1/4 pci/agp compensator. If you put money in a vid card, you're still going to have to think about that mobo during your next step up.