Question for NDC

[Ruse21]

I read in another thread you have OC'd some ABITs. First, let me say I'm new to this. Second, I have a cel 667 @ 832, 83Mhz FSB, 1.65 CoreV on an ABIT VH6 II. I cant get my sys to POST at 84 Mhz FSB. I've been told to drop the AGP divisor, but after RTFM and checking out the web site, I cant find anywhere that will alllow me to do just that. Any ideas?

[NDC]

Well, first of all, the AGP and PCI clock dividers can be set in "Soft Menu" in the BIOS. It appears that the VH6 BIOS doesnt have an independent AGP/PCI divider setting like the BE6-2 or VP6. It has preset values with the external clock (FSB). Here are the following settings that are available. The divide value is in the "( )"...

66Mhz (1/2) 100Mhz (1/3) 133Mhz (1/4)
150Mhz (1/4) 140Mhz (1/4) 105Mhz (1/3)
110Mhz (1/3) 115Mhz (1/3) 120Mhz (1/3)
112Mhz (1/3) 103Mhz (1/3) 83Mhz (1/3)
75Mhz (1/2) 124Mhz (1/3)


Keep the PCI port speed as closest possible to 33Mhz which is the default speed. Keeping the PCI port under 39Mhz would be ideal. You can calculate the FSB speed by dividing the Mhz with the Divider. For example:

This is your current setting on your system and the AGP and PCI port clock speeds are well below the specs so I don't think that's the problem...

PCI speed: 83Mhz (1/3) = 83Mhz divided by 3 = 27Mhz for the PCI.

AGP speed 83Mhz (2/3) = 83Mhz divided by 3 and multiplied by 2 = 54Mhz...


The processor may need some more juice to get it to post. Try raising the CPU Voltage a notch up and see if this will get your system to post. You can raise the "Core Voltage" by going into the "Softmenu" setup and changing the the value for the "CPU Power Supply" from CPU Default to User Defined and then raising the "Core Voltage".


You may also want to read the link below which may help you determine what's causing your system not to post when overclocked. This can be due to numerous reasons... RAM, CPU Temperature, Voltage, etc...


http://forums.digitalmntsnow.com/topic.asp?TOPIC_ID=303