AMD OCverclocked yet unstable - Tech Support Forums

Phyac · September 2nd, 2003, 10:08 AM

Ive recently overclocked an AMD Athlon 1800 Series 8. All I have done is increase the fsb to 180, could somebody educate me about the other methods of OC (ie do I need to unlock the CPU and if so how etc)?

I have:
AMD XP 1800
Mercury KT400 Mobo
512 PC3200 DDR400 RAM
Geforce FX card

thePh@r@oh · September 2nd, 2003, 10:10 AM

try not bumping it up quite as much. i need to check my bios i cant remember wher ethe other settings and stuff are. Im sure someone will get you you before me.

shrae · September 2nd, 2003, 04:47 PM

If you didn't adjust the multiplier then it is still at 11.5, so the clockspeed is 180x11.5 = 2070Mhz. It depends on the stepping but it should be stable at that speed if you give it some additional voltage.

Also make sure your PCI is locked or you have the right divisor.

Phyac · September 2nd, 2003, 08:00 PM

Thanks Guys.

I can only alter the fsb in bios, do u know of any good software that would allow me to alter volyages and the likes whilst in windows or DOS?

beppodmime · September 3rd, 2003, 02:57 AM

Not off the top of my head. I honestly don't think I've heard of programs that allow you to adjust voltages in a windows/DOS environment, except maybe a handful that are board specific.

If the BIOS option isn't there, you may want to find out if there may be a BIOS update that will allow you to. If there isn't one, you're kinda outta luck. You're going to have to either bump down the multiplier (probably going to need to unlock chip to do that, though) or bump the FSB down until you get stability.

Dax_Brandy · September 4th, 2003, 05:26 AM

maybe you have set your FSB too high that your PCI and AGP bus speed have become over-specifications. make sure pci/agp frequencies are fixed or near to 33/66 respectively.