new at oc-ing, this makes no sense...to me

[shizzzon]

i got an ASUS A7V266-E/AA mobo with an AMD mobile 2800+ chip.

My settings in the bios do not add up to what it runs at so for one... i am lost as to what to even change to get it faster.

Before i begin, i did have an XP 2100+ in here and when i would oc it- i could get to a 287mhz FSB going from a 1.73 to a 1.86 then it would become unstable, then freeze, hard reboot then it wont let me increase the FSB past 266 anymore nor the multiplier or it wont even go into windows but if i try a few days later i can but will eventually crash in windows within minutes. Temperature only increased by 1 degree, so i dont know what problem was with that but check this out-

My mobile 2800 is-
multiplier - 8x
FSB - 133
And somehow, this equals - 2.15ghz verified by SiSandra.

Now, only thing ive tried is changing multiplier from 8 to 9 and it would even post, hehe.

So, what can anyone tell me that i might be doing wrong or the answer to why that weird configuration equals 2.15ghz?

[RamonGTP]

Not sure why sandra is reading 2.15GHz, but i'm pretty sure that board does not properly support moble chips.

[shizzzon]

probably so, that would make sense. However, i have been stable for 2 months now and is noticably faster than my xp2100.

[GameManK]

the fsb you're used to seeing is doubled for DDR (double data rate) ram, so 266 actually means 133.

maybe that board tells you the multiplier x the DDR rate for some reason. 266x8 = 2128

that board is really outdated. maybe a BIOS update would help. it seems it also doesn't have a PCI lock, so when you overclock you're also overclocking the PCI bus and that can cause instability.

what speed ram are you using?

[RamonGTP]

Yeah, that board definatly does not have a PCI lock. (use to have one and it was not a good overclocker) So the only time the PCI/AGP busses are within spec is when the board is operating at 100mhz or 133mhz. Anything above 133 or anything in between 100 and 133 and they'll start gong out of spec.

[shizzzon]

oh ok, i use PC2100. How would one know if a mobo has pci lock or not?

[RamonGTP]

Well all nVidia chipsets have a PCI/AGP lock. Some VIA boards do, but many do not.