Per core ratio overclocking not properly working?

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I followed this guide on per core ratio overclocking:
https://youtu.be/9iEwHxcOvss
CPU: i5 4690k, mobo: Asus z97-A
I found that my 1st core could do 4.8 GHz, seconded could do 4.6, and the rest could do 4.5.
Here were my settings:
1-core ratio limit 48
2-core ratio limit 46
3-core ratio limit 45
4-core ratio limit 45
VCORE 1.33v
Input voltage 2v
Uncore 35 min/max
My settings should be stable, but I BSOD from low voltage when booting into the OS. My idea is that it applies the 48 multiplier on one of the weaker cores, causing BSOD.
Any ways to fix this?
 
Solution
He suggests just before 12 minutes that they implement actually independent clock settings for each core. The X-core ration limit just limits the clocks with X number of cores active, regardless of which cores that is. You're not actually overclocking each core independently at all.
He suggests just before 12 minutes that they implement actually independent clock settings for each core. The X-core ration limit just limits the clocks with X number of cores active, regardless of which cores that is. You're not actually overclocking each core independently at all.
 
Solution