Is it really the mobo that is the wall for BCLK or rather the CPU's in question? I mean have we tested these exact CPU's on other mobos to confirm or have we used known high BLCK capable CPU's pulled from other systems to test on here?

2nd, as for the LLC feature. Why is it such a bad thing to get the lil' increase under load as opposed to having to crank it up for idle just to maintain stable vcore needed under load? In reality, how many daily hours are we really keeping our machines pinged to max under load and if so how much of a temp increae if any is it really? I personally use now, and have been overclocking with LLC Enabled since the early days of X38 with Q6600 and let me say in my experiences with that core and chipset, I welcomed it. If not enabled you now need to crank up your vcore so it idels at a few steps above what will be needed to keep stable since the droop will cause it to drop instead of increase. But if just for testing, we do what we gotta' do

Keep in mind, this is more of my personal experience and opinion. I found it helped in my past and present overclocks to keep idle vcore and temps lower.