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.

MSI 570 Armor & GamingX 4gb findings and questions

Both have hynix memory

570 Armor 4gb OC Best results came with copying 2:1500 to 2:1625, 2:1750 and 2:2000  I set the Undervolt in watttool to -16 and I am able to achieve 27.2 in smOS, clocks set to 1161/1975  gpu-z shows 114w

570 GamingX 4gb Best results came with copying 2:1500 to 2:1625, 2:1750 and 2:2000  I was not able to undervolt in watttool as everytime I change the undervolt value it goes back to NA  I am able to achieve 28mh, clocks set to 1161/2010 gpu-z shows 94w

Has anyone had any better luck with these cards and if so can you please share settings in polaris.