I managed to get one card before the price went up / sold out.

Sapphire Radeon PULSE RX 570 ITXI 4GB (Elpida memory)

Hashrate: 30.57MH/s / 733.1MH/s  (ETH/DCR)

1200 clock @970mv / 2100 memory on 1500 straps @1000mv. Stable 38hrs now. Temps are really good on a single fan card.

I have these values pretty high right now to give the card all the power it could need:

TDP: 140 -- TDC: 115 -- Max Power Limit -- 140

Power usage seems higher than other 470's I have.  I'm seeing 138w in GPU-z -- On my 470's I see from 98-115 typically.  

De-volting seems sort of strange.  The card runs around 1v for a while before dropping down around 0.95v.

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Pretty happy with this card.  If I can get power usage down a bit more it would be great.\

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PS: use pixel patcher 1.4.5.   download modified polaris bios editor to see memory timings properly.  there is a youtube video in this thread that has links to downloads.