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FSB vs Multi OC - Page 2

post #11 of 17
You are a little too exited I meant when you raise FSB (4212 18x234 1.5v), you may need NB voltage as well. Otherwise you don't touch nb voltage. You never touch HT voltage.
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post #12 of 17
Thread Starter 
Quote:
Originally Posted by Catscratch View Post
You are a little too exited I meant when you raise FSB (4212 18x234 1.5v), you may need NB voltage as well. Otherwise you don't touch nb voltage. You never touch HT voltage.
testing 1.475 now, bsod about 10 mins in
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post #13 of 17
Quote:
Originally Posted by exzited View Post
why does 4200 21x200 1.45v seem stable opposed to 4212 18x234 1.5v

even though the voltage is lower
First of all, how have you determined what is "stable"?

Secondly, a potential cause of instability with a combined multiplier + ref clk OC approach is that you may not have compensated for increases in the RAM frequencies (via the RAM divider settings), CPU-NB, and HT speeds.

An all-multiplier approach guarantees that you don't have to manipulate anything other the CPU multiplier and CPU voltage settings (since the reference clock doesn't change). Once you start playing with the reference clock, all the other subsystems tied in to the reference clock also now come into play.

As I'd said earlier, it may seem more tedious, but it's really just a case of being to fine-tune your settings with a lot of granularity and control. Plus you get to know and understand your entire system better, knowing each subsystem's limits as you proceed.
    
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post #14 of 17
Thread Starter 
Quote:
Originally Posted by txtmstrjoe View Post
First of all, how have you determined what is "stable"?

Secondly, a potential cause of instability with a combined multiplier + ref clk OC approach is that you may not have compensated for increases in the RAM frequencies (via the RAM divider settings), CPU-NB, and HT speeds.

An all-multiplier approach guarantees that you don't have to manipulate anything other the CPU multiplier and CPU voltage settings (since the reference clock doesn't change). Once you start playing with the reference clock, all the other subsystems tied in to the reference clock also now come into play.

As I'd said earlier, it may seem more tedious, but it's really just a case of being to fine-tune your settings with a lot of granularity and control. Plus you get to know and understand your entire system better, knowing each subsystem's limits as you proceed.
i just hate my mother board since it doesnt have half multiplier, so even if i try and fine tune its not necessarily a fine tune
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post #15 of 17
Umm, also press CTRL+F1 in bios and check if the spread spectrum is disabled. Gives a little bit more stability.
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Intel Evilnow
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post #16 of 17
I used to mess with FSB when I had my 965, but now on my 1100t, I just do cpu multi to 4ghz, do northbridge multi up to 2800, then ram multi from 1333 to 1600 (ram is 1333 stock), and Im golden. Thats the best way to get a good all around boost for my on the stuff besides the cpu, and still be safe.
post #17 of 17
okay, so, seeing as the "1:1 ratio" doesn't really matter as the "FSB" is not really used to transmit data between the CPU and Memory, does any ratio affect its performance in any way? or should i just crank my memory clock up without worrying about (what it's refered to in my BIOS as) FSB?
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