Question about Overclocking

[ScreZ]

Hey,

so I was playing with my bios a little bit and overclocked my i7 950 to 4Ghz with speed step and turbo disabled. I idle at around 38-42 degrees and at load I reach 78 max after a couple of hours.

What i was wondering is - What is the difference between setting the multiplier to 21 and having a bclk of 191 and setting the multiplier at 23 and having a bclk of 174. Both are 4Ghz... do you get different temperatures or what does it do?

 

[bomberboysk]

Essentially, there isn't much difference. Typically it's easier to get a higher overclock while using the multiplier, because when you raise the multiplier you are only overclocking the processor, and not other interconnects. The Base clock multiplies by the CPU multiplier to give you the final CPU speed, but overclocking the base clock will also change Memory frequencies (depending upon memory multiplier), among other things. So in a sense, using the bckl will net slightly more performance gain than multipliers alone, but other factors such as how fast you can actually run your memory come into play.

 

[ScreZ]

Thanks now I understand better. So I used the 21x191 overclock.. from looking at my rig do you think this is the better way to overclock? I guess you can slow your computer down by increasing the bclk too much since my memory frequency will at some point be weird or just not as good as before..