Actually, I'm not sure about the frequency limits of my VGA: last year I could bench at 675/850, but now this seems a bit harder to reach...
I'm sure the RAM can easily get to 2000 C8 with less than 1.6V, so I'll try that, and that the CPU could run 3Dmark @4900MHz with the same vcore, but I discovered it later
That was only a first try, with fail-safe settings