do I need to up the volt?

[Intrepid]

To get a P4 2.53 (19 multiplier) from 133fsb too 158fsb(3ghz) would I need to up the voltage? And how much more heat would it make at 158 than at 149 than at 133?

[jazztrumpet216]

It really depends on the chip more than anything else. One chip might be able to do it at default, while another might need tons of voltage pumped through it. As far as temps, that's relevant to the last information... and since we don't have it, I can't tell ya. Expect a rise of about 5-10C (probably a little more too depending on how far you go with VCore/FSB) depending on your cooling.

[Intrepid]

Well I know I can get to 149 from 133 without changing the volt on a 2.26, so I might have to up the volt .05? well let's say one notch, however much a notch is. And I will be using an AX-478 with an 80mm Nidec coooling it. And there is a side fan blowing air from outside the case onto the CPU/HSF.

[seamadan000]

I haven't heard of many getting 3ghz without having to up the vcore, but your cooling is enough to allow for more voltage. My P4 is at 1.65vcore in BIOS and 1.7 actual, with stock cooling, and my temps never exceed 49C, so I say get Motherboard monitor and watch those temps. Also, some members have experienced the sudden death of their P4s due to extreme overvolt (at least that is the leading theory, but not the only) so I wouldn't exceed 1.7, but thats me.
________
LovelyWendie (http://www.lovelywendie99.com/)

[Intrepid]

I read up on that thread thoruly, I dont want my CPU to jsut up and croak on me ya know :)

[jazztrumpet216]

Most who had their Northys die on them were using 1.8V+ and extreme cooling. First off, no processor likes having that many volts pumped thorugh them over what they're designed to run at, and no processor likes being chilled to the temps that some of those Vapochills and extreme WC setups do. A tiny VCore bump to 1.65V or so won't do much to it as long as you have decent cooling. When in doubt, monitor temps.

[Rasputin'sLiver]

Originally posted by jazztrumpet216
Most who had their Northys die on them were using 1.8V+ and extreme cooling. First off, no processor likes having that many volts pumped thorugh them over what they're designed to run at, and no processor likes being chilled to the temps that some of those Vapochills and extreme WC setups do. A tiny VCore bump to 1.65V or so won't do much to it as long as you have decent cooling. When in doubt, monitor temps.

very few have died at under 1.75v. i have had both of mine running over 1.7v for months without problems, knock on wood!;)

[Rasputin'sLiver]

Originally posted by jazztrumpet216
Most who had their Northys die on them were using 1.8V+ and extreme cooling. First off, no processor likes having that many volts pumped thorugh them over what they're designed to run at, and no processor likes being chilled to the temps that some of those Vapochills and extreme WC setups do. A tiny VCore bump to 1.65V or so won't do much to it as long as you have decent cooling. When in doubt, monitor temps.

very few have died at under 1.75v. i have had both of mine running over 1.7v for months without problems, knock on wood!;)