overclocking a 1800xp problems

[Darklotus]

ive got a
amd 1800xp
albatron kx400pro
hyundi 256drr at 2100mhz 1 stick of it
albatron geforce 4 mx 440
20gb hard drive
cdrom

now my problem is i can over clock fsb to around 144 and sysem wil lboot says its a 2000xp which is all good and its fairly stable but if i try and go to a 2100xp it wont even boot at all all power settings etc are default
i tryed uping vcore once and it botted but was unstable
so i tryed more and more but stayed unstable
system heat is all fine neva goes past 45cpu and 30 system
any ideas?

[jmichna]

When you tried to get your processor to run at "2100xp" speed, what did you have the fsb and cpu multiplier set at? At higher fsb speeds, you may be bumping into the speed limit for the ram, or one (or more) of the pci devices.

Normal pci bus speed to 33.3mHz (fsb @ 133mhz/4). At 150mHz fsb, you are asking your pci devices to run at 37.5mHz... at 160, they would need to be capable of 40mHz. (Note, if you have a KT333 or KT400 chipset, the 1/5 pci divider doesn't kick in unless you set fsb to 166mHz.)

Also, when pushing ram, it is often beneficial to boost vcore. I run the ram in my overclocked pcs at +0.3v over default vcore (e.g., 2.80 instead of 2.50). Also, if ram is your limiting factor, change to less aggressive ram timings.

[Darklotus]

well only pci card i have is a network card which shoulnt be a problem?
sorry but i dunno anything about ram timing
all teh ram settings r defualt
and cls is at 2.5 or sumthing
only thing i know
multiplyer is defualt on cpu as well because mine isnt unlocked
to scared to do that stuff lol
i think its 11.5 not sure what eva defualt is

[jmichna]

Is your XP1800+ a Palomino (Model 6) or Thoroughbred (Model 8) CPU? The Palominos are multiplier locked, while the T-Breds XP1800s are multiplier unlocked. Did you record the code numbers that were on a small sticker affixed to the processor?

You need to read your motherboard's owners manual, and learn what your ram timings are set at. You should determine if your motherboard will allow you to adjust vcore (power going to the ram module). You should also learn if you can adjust your front side bus speed.

Just how did you manage to change (which) settings so that you saw "2000xp" when it booted up? You need to give a little more info before we can help.