Overclocking cpu, loose video AGP

[Guest]

Little help please. First time overclocking..going ok til....i kick up the FSB from 100 -133 on my FIC AD11; AMD 761 chipset, Athlon TB 1.33..loosing my AGP, no video boots up though. Left voltage and clocking on auto. Is it that the FSB to 133 is too much for the AGP card? Without messing with something i'm only showing 1 Ghz cpu speed. Using pc2100 mem.

<P ID="edit"><FONT SIZE=-1><EM>Edited by marknrom on 01/25/02 07:53 AM.</EM></FONT></P>

 

[Crashman]

AGP is normally the same speed at both 100MHz and 133MHz, look for other problems.

What's the frequency, Kenneth?

 

[girish]

With no settings, Auto would set the FSB to 100 Mhz, and your CPU having multiplier of 10 that would give you 100x10 = 1 GHz, your CPU actually has 133 MHz FSB which works out to be 133x10 = 1.3 GHz.

There are many instances that a genuine 133 MHz FSB chip doesnt work at 133! Its not the AGP problem, your system simply isnt booting up!

Anyway check your motherboard documentation whether it can set the AGP ratio to 1/2, generally with 100 MHz its 2/3 of the FSB, which with 133 MHz FSB gives 89 MHz which is too high for most of the older cards. but most of the board do automatically adjust the AGP ratio with FSB. What display card do you have?

You can try raising the core voltage a bit, say upto 1.85V or a bit higher.

girish

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