How can I tell if my FSB is set up correctly?

[Kryo]

Hi...

I have just upgraded my computer from...

Althon XP1800+
Jetway KT266B Mobo
512Mb PC2100 DIMM
GForce 4 MX440

to...

Athlon XP2500+ Barton Core
Chaintech CT-7VJL Apogee Mobo
512Mb DDR-333
GForce 4 FX5200

In the bios I have the multiplier set to 11x166 Is that correct for a 333Mhz Proccessor? or am I doing something wrong? The MHZ won't go past 250... I'm confused!!!

[Stee]

lmao.

sorry no wonder it wont go past 250 thats ur fsb.

fsb is frotn side bus.

which basicaly is half your clock speed on amd tbred/bartons, not sure about 64s and fx.

the 166 is right, think about it 166x2 = 333.

if you dont know these kinda basics i would really sugest you dont play around the settings in the bios booting at 250fsb would more than likely force you to have to cmos reset as it just will not boot.

[Kryo]

Thanks for the reply...
I do know what I'm doing in the bios, I was just a bit unsure...

Is there any reason why my PC restarts by itself at random intervals?

[JigPu]

It could be unstable. Does it reboot at stock speed? If not, then it's definatly unstable. Run Prime95 (http://www.mersenne.org/freesoft.htm)'s torture test to check if an overclock is stable. It stresses the CPU by doing some intensive math, and then checks the results against the known values. If it's off by a fraction, it knows the CPU is unstable.

JigPu

[Kryo]

Hmm... Well it appears that JP31 on the mainboard was set to pins 1+2, making the FSB 133, I only just noticed it in the bios, I have now set it to 166... could that have been the problem?

[Stee]

as far as i can tell, jp31 isnt ne thing to do with fsb. i cant be sure.

you said originaly ur fsb was 166 ne ways, whats the issue about 133?

the mobo sounds like a via kt266 which im not sure can do 166fsb as standard, meaning that running at 166fsb would be 'overclocking' the motherboard.

not sure the a/b could mean its a higher model.

[Kryo]

I'm running the Chaintech 7VJL Mobo, in the manual Jumper 31 (JP31) pins 2-3 sets 166MHz CPU Clock, pins 1-2 enable JP3 which sets either 100MHz (Pins 1-2) or 133MHz (Pins 2-3)

In the CMOS under 'Advanced Chipset Features -> DRAM Clock/Drive control' the Current FSB was set to 133MHz, but since I changed JP31 to pins 2-3 it now says 166MHz.

Under 'Frequency/Voltage Control' I had the 'CPU Clock' set to 166, which was where my first analogy came from and the 'CPU Ratio' set to 11x

[Stee]

ah ok, by the sound of it u were still using the old kt mobo.

think the mobo will let you down alittle tho

[Kryo]

Why's that then?

[Stee]

well its a kt333 motherboard which is fine runs nice in sync with your memory. however your cpu is likely to be able to be held back by it, esp the the degree the mobo doesnt support barton cores, so its possible it wont use the cpus advanced barton features and treat it as a tbred.

[Kryo]

Ahhh right... Thanks for the info... Most appreciated!