FSB question

[H1HID]

I had an old venice 3800+ Oc'd to 262mhz x 10.5 multiplier = 2750mhz. I got a new processor (in my sig) and it only does 250x11 = 2750. When I tried 262x10.5, it wouldnt be stable. Everything else in the computer stayed the same. I guess my question is that I thought the ram and mobo would have more effect on how high FSB could go than the CPU. True or False? thanks!

 

[Nenu]

It looks like you are at or near the max speed of the chip assuming the following arent an issue:

Check the core temp, if too high this can limit the overclock.
If temp isnt the issue, you might need to increase VCore.

 

[H1HID]

well thats the thing...I couldnt even get 262x10 = 2620mhz but I can get 250x11=2750mhz all at the same volts and roughly the same temps. Its confusing me.

 

[Nenu]

well thats the thing...I couldnt even get 262x10 = 2620mhz but I can get 250x11=2750

Thats not what you said...

I got a new processor (in my sig) and it only does 250x11 = 2750. When I tried 262x10.5, it wouldnt be stable.

262 x 10.5 = 2751MHz which is slightly faster than your other stable speed.

Also things are not quite equal at different frequencies as Electromagnetic / Electrical noise will have more effect at some frequencies than others.
When on the edge of stability, this can become a dominating factor.

If you want to see what max FSB is usable, reduce your multiplier and try it out.

 

[H1HID]

well i was first demonstrating that the even with the same clock speed I couldnt keep the higher FSB stable. The second example I gave you was just to show you that I was hitting the peak of my overclocking capability. 2750mhz is prolly not my peak clock speed however its good enough. What isnt good enough is the 250mhz FSB. So basically i used to be able to do 262x10.5 on my old system, and now I cant even do 262x10 on my new system but miraculously I can do 250x11 which gains more clock speed than 262x10 without the instability and the same clock speed as my old chip. Why is this? I hopwe that clears things up thanks

btw...305mhz is my highest FSB on my MOBO

 

[Nenu]

whats the highest fsb you can get while using the new chip?

 

[H1HID]

ill have to give that a shot, but I guess that was my original question. I though the motherboard and memory effected the FSB speed more than CPU. I guess I will try and find out.