AGP and PCI Divider

[vlovich]

I'm trying to oc my system even more (633 celly @ 1ghz) but it is able to do more. However, i suspect the reason is because of the PCI and AGP buses. When i oc (using cpucool or cpufsb) it says the PCI bus will be a 33 (100 FSB) However, when i ran SiSoft Sandra it said my AGP was 101 mhz and my PCI was 50. I'm just wondering where i can get a third opinion (if SiSoft is wrong) and where i can change the divider settings for both the PCI and AGP (if necessary). My mobo manual doesn't specify any jumper settings that control this and there is no option regarding this in the BIOS. wondering if there is some sort of prog that can change the settings within windows. thnx for any help

 

[vlovich]

I was right. I used MSI Fuzzy Logic 3 and it confirmed that my AGP is using a 1/1 divider and my PCI is using a 1/2 divider. This is most likely the reason for my inability to oc higher. I was just wondering if there is any way to change the dividers through software (no settings in BIOS or jumper information in the mobo manual). Any help would be greatly appreciated (don't worry; i won't cut off your heads if your bring me the bad news that i can't change it (maybe))

 

[cw823]

I was right. I used MSI Fuzzy Logic 3 and it confirmed that my AGP is using a 1/1 divider and my PCI is using a 1/2 divider. This is most likely the reason for my inability to oc higher. I was just wondering if there is any way to change the dividers through software (no settings in BIOS or jumper information in the mobo manual). Any help would be greatly appreciated (don't worry; i won't cut off your heads if your bring me the bad news that i can't change it (maybe))

I can only assume the mobo does it automatically, or doesn't in this case....though it should. Since I have no idea what mobo you have I can't help too much....

 

[vlovich]

I'm using a PcChips M754lmr mobo with an Ali 1631 chipset. In my manual, and on the website, it says that my mobo supports a 66, 100, and 133 mhz bus speed and coppermines at least up to ~800 mhz. If the agp and pci clock dividers were locked, wouldn't that cause serious problems with the system; is it possible that the comp detects that i am trying to oc the system and is therefore not changing the dividers or somethings along that reasoning; detects the fsb should be 66 so it sets settings for that fsb no matter what it really is (grasping at straws; hope i'm not limited to a 66 mhz bus speed for the rest of my life with this mobo (hoping to upgrade to p3 coppermine 1ghz 133 before i make a huge jump to either the best amd (probably) or maybe the best intel)) again: am wondering if the agp and pci dividers can be changed outside of bios and jumpers

 

[vlovich]

i'm using a pcChips m754lmr mobo with an ali 1631 chipset. The mobo supposedly supports p3 coppermines up to ~800 with a 133 bus (although i think it can support the 1ghz p3). If the agp/pci dividers were locked at their current settings, the system would probably not even boot. Is it possible the mobo detects the real FSB that the cpu uses and then sets the dividers accordingly or am i stuck with a 1:1 agp and a 1:2 pci? am also wondering if it is possible to change the dividers outside of bios and jumpers. also is it possible to find out the jumpers on the mobo that relate to this (if any) that just aren't mentioned in the manual(and if so how)

ps: sorry for the redundancy with previous post. had troubles with my browser; didn't display my post from above

pps: stupid microsoft

 

[Peter007]

You should count yourself as lucky that you even get your
Celeron 633 to do anywhere above 1G

I've own 4 633 Celerons, and out of the 4, only 1 will do 980mhz reliabily ( that is 9.5 x 103fsb)

Vlovich, I don't think your PCCHIP is telling you the TRUTH.

If you overclock with 100mhz FSB, you should have 950mhz, not 1000mhz.

You need to download programs like wCPUID/Sandra to check the real SPEED. The BIO post speed is often WRONG.

I have a supermicro P6SBA that would post my 950mhz as 1000mhz, but it isn't real

 

[vlovich]

You're right, i don't reach 1ghz. But close enough (998). You made the mistake of assuming i use a 100 fsb while i really use a 105 fsb. Anyways, i'm really asking about the agp/pci divider change through software. Is it possible?

 

[vlovich]

Oh.... I see where I created the confusion. I stated my celly went to a ghz but stated the agp and pci clock speeds for a 100fsb. sorry about that, but I remember there was a reason for me doing that i just don't remember what it is. Sorry 'bout that.



I think I have both deja vu and amnesia at the same time. I think I have forgotten this before.