CPU FSB or CPU core??

Associate
Joined
5 Jun 2007
Posts
153
Hi everyone!
Tried my 1st overclock last night! (from 2.13 - 2.50) But before I go any further though, I just wanted to know that when I hit my stablity wall which voltage should I up: CPU core or CPU FSB?? :confused:
 
Soldato
Joined
17 Dec 2006
Posts
8,197
Neither unless you figure you need too. When you hit system instability when overclocking, it isn't necessarily the CPU voltage or FSB voltage, or even MCH voltage that can be the problem. You have to run benchmarks and get some indiciation of what is causing the instability, normally Orthos spits out good errors that can indicate that. Also, wouldn't bother touching the FSB voltage unless you've exhausted other options of voltage increases and checked other areas. The FSB voltage is the line between your CPU and Northbridge, ie. increasing Vcore raises the direct CPU volts, increasing the MCH raises the direct volts to the Northbridge and increasing the FSB voltage raises the volts to the "path" between the CPU and Northbridge.

I guess my point is, don't just start ramping up CPU voltage when you hit instabilitys with an overclock :)
 
Soldato
Joined
17 Dec 2006
Posts
8,197
Hmm, guess I worded that a little badly. When I mean ramping them up, I mean in the case of... You get an instability with the overclock, therefore you add some voltage to the CPU, still unstable so you add more, then more, then more and so forth (that's not really what you should be doing). That was what I was trying to get add when getting an instability with a system, almost definetly try a small voltage increase on a CPU to check if it helps or removes instabilities with a system, but you have to keep an eye on the other areas of the machine at the same time, like is my RAM overclock / am I way over stocks speeds that my NB might need more juice to cope / does my cpu need some more volts to stay stable.

Some people tend to just think "hmm, instability, I know I'll increase CPU voltage!" :) It kinda might be the case when you are reaching a point where you are WAY over stock speeds that basically the CPU needs a lot more juice. You tend to see a trend happening when people overclock in respects that they go for ages on stock volts, then trying to squeeze out another 100mhz when they are way over stock requires a reasonably large boost to CPU volts.

From your system specs, I'd be suprised if you needed any voltage increase on the CPU before 3Ghz. Mine does 3.2 Ghz on stock volts easily and I've seen people pushing 3.3 - 3.4 Ghz on stock.
 
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