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The Dual OC has a custom PCB that is different than reference and Strix. I could not find a compatible boardview file, but there might be some other model that uses same/similar PCB.

It's my first touch with AMD card newer than HD7970 and I didn't even know what I'm buying, but this particular model seems to be a popular amongst miners in my country.

The PCB exposes convenient I2C pads for the main PWM controller and also additional pads for hotwire (vcore, vmem, vddci).

To enable hotwire functions, I had to bridge some pads for the different rails, otherwise the pads are disconnected and you can only use the measuring points.

- I2C connection to ASP1300 - it's a relabelled IR3567B and EVC2 has full support

- bridge pads marked in red to enable OVM and OVCI pins. For example, to control memory voltage with EVC, connect a GND point to GND on EVC, OVM to SRC1 and VDDM to VIN1, then use feedback mode in the software. It should be possible to use a regular hardware mod with a variable resistor (trimpot), but you need to connect one leg to OVM and the other one to GND. Always measure voltage under load.

Asus_RX480_DualOC_front.thumb.png.5948483bed96f6ae6516fcca13d7cfbc.png

rx480_dualoc.thumb.png.40e5450bfafdb5fb156718ddfaff1284.png

 

The core pads are on the back of the card, but that's unnecessary if you're going to use the I2C pads for the main PWM.

Asus_RX480_DualOC_back.thumb.png.bbc7169038f49eea0eaddcf1588af675.png

rx480_dualoc_ovc.thumb.png.ccb1ed59ccec09751152f46150537bd0.png

 

Edit: Replaced images

Edited by I.nfraR.ed
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