little advice please

AlanJ · 23 Jan 2006 at 16:57

Hi there,
Ive managed to overclock my cpu with no errors 100%. My processor runs at 1.93GHz at stock and ive managed to overclock it to 2155 MHz (11.5 x 187) Vcore at 1.65. Im not to sure what my ram timings are set to.

Anyways more to the point, when i go 2mhz to make it 189 it becomes unstable but the temps remain nice and cool.

Any advice on what i could change in the bios to make matters better?
Spec;

Abit K7DA
2X512 PC2700
480w Hiper Type-R PSU
AMD barton xp 2600+

Thanks in advance.

Matt82 · 23 Jan 2006 at 17:01

bit more vcore

ive got a barton running 1.85

mp260767 · 23 Jan 2006 at 23:15

could look at raising the vcore, i wouldnt go above 1.7v tho, raise the chipset voltage (if it shows) to 1.7 and raise the memory/dimm/vdimm to 2.7/2.8.

Topitoff · 23 Jan 2006 at 23:53

The mobo has a VIA KT400A chipset which does not have AGP/PCI locks; so you are overclocking these buses when you up the FSB. The instablity is probably here; in extreme cases too much fsb can result in the gfx card and PCI bus being fried!

Soul Rider · 24 Jan 2006 at 00:04

your only hope is to drop the multiplier to 11 and push for 200fsb, but that would require doing a mod on the chip. other than that you wont get this system to be stable at much of an overclock due to the pci/agp requiring a denominator of 33 to function perfectly

Topitoff · 24 Jan 2006 at 00:28

At fsb 200 the Ratio (FSB:AGP

CI) must be 6:2:1 - is this an option in the BIOS? if not then it looks like you've gone as far as you can with this mobo.

For better OCs you will need a NF2 400 ultra chipset mobo like the Abit NF7 v2.