@mhorgel Yea I have the exact same problem with my core 0.

It MIGHT be because of the cpu but for some reason core 0 just seems TOO weak to be true. My core 1 overclocks very well and primes for hours while the other core fails in a few seconds. I try booting the vcore to 1.6v but it still is unstable. I haven't figured out what's wrong yet. I might get another cpu soon to test it on but that won't be for a few weeks.