Originally Posted by r4m0n
OK, finally had time to finish my build and start with OC testing.
Specs: 1800X, 64GB RAM (4x16GB, F4-3200C14Q-64GVR), custom WC rig with CPU+GPU (980 Ti) ending with the radiator in front of my AC unit.
First tried to get the RAM up to spec. Failed to boot at 140 BCLK (GPU didn't like it), got it to boot on 120 BCLK, 3200 and CAS 14, but it wasn't stable in IBT with up to 1.45v DDR, 1.15v SOC and quite relaxed timings.
Left the BCLK back to 100 and the RAM on 2666 and started playing with the CPU instead. Working with P-States, vCore on offset:
4.0GHz - Fully stable, auto vcore, no offset
4.1GHz - boots at +25mv, IBT Very High stable at +112mv (vCore up to 1.439)
4.15GHz - boots at +150mv, CPU-Z and CB15 bench-able, IBT unstable
4.2GHz - boots at +175mv, CPU-Z and CB15 bench-able, IBT unstable
4.25GHz - boots at +175mv, CPU-Z bench-able, can't handle CB15
4.3GHz - boots at +175mv, unbench-able
Anything over 4.1GHz gets the vCore above 1.45v, so I'll probably stick with 4.1GHz as my daily config. At +175mv I was hitting 1.52v+ on vCore, so I wasn't comfortable trying even to bench on that. Might try again later just to get a CB15 @ 4.3GHz :-)
Next I'll be trying to get that 4.1GHz with 120BCLK and try to get my memory to work properly at 3200... Not going to be easy.