Name: optiprime Date: January 11, 2007 at 17:17:54 Pacific Subject: need sugestion on FSB speed OS: gygabyte GA-8I915P duo pr CPU/Ram: Pentium 4 Processor 630, Model/Manufacturer: Built
I am in the process of OCing my computer but i dont really know what to do. my goal is 3.5GHz. the only changes iv done is moved the cpu host frequency from 200 to 210 and the vcore from 1.385 to 1.5 it gave me a 150MHz boost. so i am curently at 3.15
can anyone help me find out what my CPU host frequenct should be at or what could help me reach my goal, thx.
You'd be surprised at how far a little googling can get you, especially in a situation like this, where you are trying to do something you aren't very familiar with.
Well, if you are of the impression that raising the CPU's voltage increases its speed - it's kinda hard to believe that you do understand how this all works, but we'll go with that - folks are very understanding on this forum.
Hopefully with the link I posted, you can stably crank the most of your processor. Good luck!
"i dont understand doesnt raising the Vcore increse speed?"
No, it doesn't. Raising the FSB increases the speed. However, the increased speed causes the CPU to need more voltage...but it depends on the CPU & how far you go with the FSB. Generally, you don't increase the vcore unless it's necessary & if/when you do, it should be done a little at a time (add 0.025v each increase).
To properly overclock, you should take small steps & test the system after each change. You shouldn't just jump from 200MHz to 280MHz. Increase the FSB in 10MHz increments. After each change, boot into Windows & test for stability. If your system become unstable, that's when you'll need to increase the vcore slightly. You also need to be aware of what happens to the RAM speed as the FSB is increased, plus the PCI & PCI-E buses. You *should* be able to lock the PCI at 33MHz & PCI-E at 100MHz...that will solve that problem. The RAM probably has some sort of ratio setting that will need adjusting. Ideally, the CPU & RAM should run at the same bus speed (aka 1:1 ratio). In other words, even though your DDR675 RAM has a default speed of 337.5MHz, it should be underclocked to match the CPU bus. So if your CPU bus is at 280MHz, that's the speed your RAM should run at as well. Here's some detailed O/C info:
It sure looks like a 3/4 memory divider is in effect, check your BIOS settings for your memory, and if you are to follow jam's advice - set that divider to 2/3 or 4/6, that way it'll be in tow.
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