hmm, this is strange, it won't pass the code 95 with 1T, no matter I throw at it, 3.6GHz, even with driving strength 4, timmings 5-5-5-15 (and that was desperate), even if I raise the NB + related voltages, I've tried everything, no go.
It seems I get best results with 535MHz CAS4 tight timmings, read = 8820MB/s 13.250s 1M Pi, will tweak that for now.