Overcloking a 2500 on a A7N8X-X

[kill3ruk]

I am going to overclock my CPU which is a AthlonXP 2500. My motherboard is the Asus A7N8X-X with the 1009 BIOS. I know my CPU is locked as I tried lowering the multiplier in the BIOS and my system would not boot.
So, a friend told me to overclock my FSB by just going into the BIOS and setting it at 400mhz. Is this correct?
I have been reading that I need to first lock my AGP and PCI FSB?

CPU Heatsink is a Thermalright SLK-800 with a 40CFM fan on top. At the moment its running at 33c idle and it can go up to 60c under full load. So, I am going to reapply some thermal goo and buy a Delter 'Screamer' later today.

Thanks for any help you can give me.

 

[Sylvanas]

put on some artic silver 5 thermal paste (its the best) never just go straight to 400 FSb (its actually 200 in the bios giving 400 effective) raise the fsb in 5-10mhz increments. use prime 95 to make sure your overclock is stable (google search prime95) and you should be set. if theres no option in the bios for your agp/pci lock then it should be auto locked with NF2 400's

 

[kill3ruk]

I re-seated my heatsink and brought a Delta 'Screamer'. My temps are now 28c idle and 35 full load.

P.S. I have just had a look in my BIOS and there is an option saying something like AGP Frequency which is set to 'Auto' at the moment. Should I leave it at this or change it to 66mhz so it sticks at that setting?

 

[reallyscrued]

change it to 66 mhz, overclocking ur AGP bus does little to nothing. Btw, ive taken my 133 athlon 1600+ strait to the 166 fsb on a Via Kt333 and it worked fine. i couldnt up it 1-2 mhz at a time cuz my system couldnt lock the agp/pci. but it had a 1/3 divider so it worked out fine. i took a 1.4 ghz to 1.74 ez.