howto overclock FSB ?

[orfd2]

the newer mobos come with a jumper set for selecting FSB 100 or 133 MHz. How do we change it so that we can do FSB based overclocking? I have read reports of folks going up to 152 MHz FSB! How??!! More specifically I am using a 1 GHz Duron on EPoX 8KHA+.

 

[LanEvoVI]

On startup, enter the BIOS. There should be options to change the FSB frequency in the menu.

 

[orfd2]

The bios has modifiable fields for CPU clock and CPU ration. But nothing for FSB clock. Besides, when we have a jumper on 100 MHz, isn't that hardwiring the FSB? The mobo wont bootup if I take the jumper off or if I put it on 133 MHz. The clock multiplier is 10.

 

[Halogen]

hmm i posted a similar topic just after you, anyway;
XP 1700+
Gigabyte 7VTXE

when i enter bios it says FSB set by jumper and it is unselectable and unchangable set at 133
i took the jumper off my motherboard and booted up bios. now it STILL says set by jumper yet somehow still set at 133. wtf?

 

[orfd2]

going through the mobo manual, i see that bios does have a Current FSB frequency field. but description says CPU clock frequency info. are fsb clock and CPU clock the same? if so do i need to close the l1 bridges to change even FSB ??

 

[Wind]

<< the newer mobos come with a jumper set for selecting FSB 100 or 133 MHz. How do we change it so that we can do FSB based overclocking? I have read reports of folks going up to 152 MHz FSB! How??!! More specifically I am using a 1 GHz Duron on EPoX 8KHA+. >>


1. Set the FSB jumper to 100 FSB.
2. Clear the CMOS.
3. Fire the PC up.
4. Go to bios & up the FSB. Small increment until PC not stable.
5. Then up the vcore & RAM voltage.
6. Up the FSB again (small increment).

In O/Cing, increasing the speed of the CPU must be compliment by increase in vcore & RAM (2 most important settings). Try this first.

Post back results.

 

[orfd2]

4. Go to bios & up the FSB. Small increment until PC not stable.

Therein lies the problem. How does one "up the FSB". As it turns out
cpu clock == fsb. So i "upped the cpu clock" and system became unstable.
found that dram is at 140 MHz. too high. so "downed" dram to 100. everything worked fine (dram was at about 110). cpu was at 1.055 GHz.
Now upped the CPU clock to 120. would not post. now downed the cpu clock to 110 (1.1 GHz) posted and windows came up but harddisk read failure. i guess i will have to play with other settings. Anyway my
initial problem (how to up the fsb has been answered!) Thanks to all who
responded. also found interesting articles in the motherboard community of this site as well as amdmb.com and 3dspotlight.com