[TRM] RX 480 core undervolt not applying

[kern0w]

Hi, I am quite small scale so I want to be as efficient as I can be. I recently got a pair of RX 480’s (reference style PowerColor&Sapphire) to go alongside my RX 580 and RX 5700 XT.

I BIOS modded with no problem, I can achieve 33.5MH/s without any notable invalid shares if I raise the core clocks, But I am not so happy with the power draw at that level so I’ve dropped the cores back to 1100Mhz. I am hoping if anybody can help me get the core undervolts to apply I can get similar efficiency to my RX 580.

I did try Phoenix miner but the power draw was higher, as was the error rate.

[kern0w]

Here are screenshots from RBE, memory straps are the only thing I have changed, if somebody more knowledgeable has any pointers to lower power draw that would be great!

[kern0w]

Okay, a update for anybody seeing this in future. I’ve had a play around with RBE, I’m no expert so do this at you’re own risk!! currently seeing savings of 60W at the wall. I will run for 24hr for stability before raising core for 33MH/s

[Stcomrie]

I have eight of these RX 480s myself and I’ve been looking for a way to get the core voltage under a thousand as I think the power draw is kind of crazy and also the cards run extremely hot and at certain points a thermal throttle and overheat. Did you find your solution to be stable?

[cypher619]

What you have done in RBE is correct way of lowering GPU core voltage. Only need to do 1145 and above since we clock these cards are 1200 - 1275 for good hasing. Also look at Aggressive Undervolting in the Overclocking page.