4770k with a Hyper 212+ in push/pull
35x min / 39x max cache (better to lock this at 39x?)
Ran stable for 10 - 12 rounds of prime95 blend. Rebooted and swapped vrin back to 1.65v with an LLC setting of "Level 8". Lower temps and nearly identical stability.
Not entirely stable, still ended up hard rebooting after about 15 minutes, but definitely near the same performance with a dramatically lower vrin. Are these high vrin values simply making up for vrin droop under load? Setting an LLC value (as opposed to auto) seemed to make a difference.