Originally Posted by aalfabob
I have a Athlon XP 1700+ in a K7S5A Mb right now with water cooling hooked up to it. I used a pin mod to get the multi up to 15x from 11x, but for some reason i cant get the fsb over 112 Mhz. I have a Pot. hooked up to my voltage regulator right now so ive also tryed all voltages from 1.5x to 2.2v and nothing seems to work. When i had the multi at 11x i was able to boot stable at 150Mhz which is about my limit because of my PC133 ram. Any ideas or fixes for this problem?
Hey mate, I had this mobo for a year or so, and you're absolutely right. It is IMPOSSIBLE to put the FSB over 112MHz. A fsb of 117 (for ex) gives you a PCI freq of 29MHz and an AGP freq of 58 MHz as it passes on a divider FSB/4 for the PCI bus and FSB/2 for the AGP. It uses these dividers for any fsb freq between 117 and 150. When using a FSB between 100 and 112 it uses the dividers FSB/3 and FSB/1.5 respectively. I suppose you are doing the OC either with speedfan or with a modded bios (that I found on www.ocinside.de
) as in the ECS BIOSes I had there was no way of changing the FSB, except directly to 133MHz. This is also the case when going over 150MHz, it changes the divider for the PCI/AGP frequencies wich makes all the mobo unstable, just as it is the case when going over 112MHz.
There is no way to avoid that, I would be very surprise if someone has succeded to modd a bios so that it fixes this issue. Try with another mobo if you eally wand more OC, for a 20 bucks board 150FSB is quite OK
EDIT* Haven't seen y'r second post, but I suppose this answears y'r questions. Cheers!