Does anyone have decent settings for R9 290x with Elpida RAM?  I have 3 rigs with 3 cards each and am 'only' getting about 320kh per card

Been following this thread and it looks like these cards should be running a little better but I have not had any success tuning them.  I am currently running I-18  TC-25550 threads-1 dyninterval-7 platform-0 vectors-1 lookup-gap-0 worksize-256 GPU-925 Mem-1500 stock voltage

I have adjusted the GPU clocks up to about 1025 and get a little improvement, but it is unstable and crashes within about 10-15 min

If I adjust the Mem clock down or the Intensity then hash rate drops

Cards are sapphire reference cards - they hash on normal scrypt at about 880-900kh (win7) - I have one of these same cards in a BAMT machine that is hashing at 980kh - so I think they have more potential, but haven't been able to tease it out yet...