Originally Posted by Raghar
I actually don't understant why someone would use BCLK at all. If you wana fine tune it, it's fine +- 1.03*BCLK, however the main grunt is done by multiplier and straps, and considering it allows straps there is quite a lot of combinations that allows great overclock even without touching BCLK.
I have been doing BCLK overclocking for years now on multiple system, so far nothing happen to any devices attached to PCI-E bus. Everything peachy. Just like OC using multiplier, if it's unstable, system will crash. BCLK overclocking (how far you can overclock) depends on the quality of the CPU.
Originally Posted by alancsalt
That doesn't make sense to me.. 125 strap is for using 125 BCLK or thereabouts - to me using straps is for changing BCLK...by big chunks...
Yes, that is correct. For example when using Strap 125 (ratio 1.25), BCLK is 125. The difference with Strap is that it doesn't effect PCI-E bus. It will remain at 100MHz (125 / 1.25). When you fine tune the BCLK, for example 169MHz (Strap 166), it will start to overclock PCI-E/DMI controller to 101.8MHz (169 / 1.66).