How come your temps are so utterly low ?
Is that with just Watercooling ? I see EK Supreme there, but there is no chance in the world to get below 50c with just that.
Are you using a chiller or your ambient temps are just below 0 ?

Aside from that nice clocks, I might as well try that settings to see if it helps to make my CPU stable at anything above bclk=210 Mhz.
I managed to go up to 220 Bclk with lower Multi, like 17x but with 21 I maxed out at about 215 with a few lucky runs on 217.