Newbie needs help

[Evil-c]

Ok i got a
Gigabyte GA-6VX7+ (bios f4)
Celeron 533 (might be 533a how do i check)
i read you can o/c a 533a up to 800mhz by setting fsb to 100mhz.
I tried that via jumpers but sys wont start.
Need to adjust core voltage ?? is this cpu voltage ??
I have a jumper called magic booster, open it will increase cpu voltage 10%..

Ok the help i need is how do i o/c this setup?
what is core voltage and how can i test it and turn it up??

please dont say go away and read newbie pages...

[AoD]

Well the basic Idea in Voltage core is the CPU's voltage itself. Usually setting this higher at an already unstable overclock can sometimes help with the stability of the CPU. This does however increase the temperature and makes for higher cooling needs. As for the celeron I do not have to much experience with them but the only assured CeleronA I have seen was a 333a which the post marked it as being a Celeron 333a at system startup. Well thats all I can add at this moment. At least you get to know there are more newbies than just you. 8)

[Newbie_Doo]

Evil-c (Feb 18, 2001 05:41 a.m.):
Ok i got a
Gigabyte GA-6VX7+ (bios f4)
Celeron 533 (might be 533a how do i check)
i read you can o/c a 533a up to 800mhz by setting fsb to 100mhz.
I tried that via jumpers but sys wont start.
Need to adjust core voltage ?? is this cpu voltage ??
I have a jumper called magic booster, open it will increase cpu voltage 10%..

Ok the help i need is how do i o/c this setup?
what is core voltage and how can i test it and turn it up??

please dont say go away and read newbie pages...

One question at a time. 533a is a coppermine core and has a default voltage requirement of 1.50 (Fc-PGA) or 1.70 (Slot-1) volts. It will have a CPUID of 068xxx. The older 533 has a core voltage of 2.0.

Before you start turning it up, make sure that you have thermal grease between your heatsink and processor. Check your installation and make sure that all your components are in place, seated properly and connected. If your board has intermediate steps between 66Mhz Front-side bus and 100 Mhz, use them. Go slowly. At some point you will find that your processor/memory/video card/etc. has reached it's limits.

Be cautious about playing with the voltage and bus speed so quickly, or you might wind up with a very cool looking keyfob.

And...go to the main page and read the basics of overclocking. A little time spent in the pursuit of knowledge is better than wasting money frying equipment. We ALL started there.

BTW, my CeleronII-600 will only go to 810 happily with air cooling. I can get to 902, but not with stability. I have very good RAM, a very good video card and other components too. I am circumspect about pushing it farther without some VERY GOOD cooling (watercooling system) because my $$ is still important to me and I hate to waste it by being dumb.

I hope this helps.

[batboy]

I don't think Intel made any slot 1 Celeron II's, I think they all were FC-PGA (socket 370 flip chip). If so, then that will be a definite way to tell.

[Evil-c]

yups it's a fc-pga slot 370 celly

[Newbie_Doo]

My mistake, both of the voltages listed as coppermine are FC-PGA. However, they did make a PPGA Celeron 533 and the default voltage is 2.0v. I'll stand by my earlier post for the rest of the info.

[batboy]

I'm pretty sure that's a C-533a CPU then, which is good news! Those coppermine Cellies are great overclockers. You only need to do two things before trying 100 fsb speed (800 MHz): 1) better than average cooling and 2) usually you need to increase the CPU core voltage. The default voltage is 1.5v, but the same core is used in the P-III cB0 chips too and the default voltage is 1.65 with them. So you know 1.65v is perfectly safe. Your magic voltage setting of 10% increase would also be perfect, because that should equal 1.65v (1.5v + 0.15). My C-566 runs at 100 fsb at 1.65v, no problem, even when I was using a Golden Orb.

[Evil-c]

Looks like it's a celly 533 not a 533a :(
with core volt up 10% and fsb at 75mhz it will run stable at 600 and refuses to go higher just sends my box wonky

[proze]

is it green with a little blue chiclet in the middle? 533a...
is it dark grey with a silver cap on the top...? 533-mendocino.

[Newbie_Doo]

Evil, I am assuming that you have a CeleronII-533a. See Proze's post to be sure. If you have a 533a then: If you have good cooling and are limited to a 10% voltage boost on your board, then you can fool the board into thinking that your celeron has a higher Vcore than it does. You will need to wire the VID pins in the proper combination to get the right voltage. DO THIS VERY CAREFULLY. Go here http://www.hardocp.com/articles/intel_stuff/bumpvoltage.html and read the article. It will tell you how to get 1.65V or 1.90V by wiring the VID pins on the back of your CPU. Does your board have any FSB speeds besides the ones you listed? Try an intermediate one if you can.

I have wired my Celeron for 1.65V ( and my board is limited to +10% too) and am running at 1.82V right now. I can POST at 1008MHz, but can only run 810MHz rock stable. I am still using the retail HSF and until the watercooling rig is installed in the new case, I won't go to 1.90v.

Good luck.