Apparently AMD wants to avoid shortages of their new Vega cards at any cost. Consequently, the company is doing their best to help miners to keep their older GPUs functional for mining. In order to do that, AMD issued an official driver release aimed to improve GPU mining hashrate.
Radeon Software Crimson ReLive Edition Beta for Blockchain Compute
I have tested this new driver on my rigs and I can confirm that they it does improve hashrate, no more hashrate drop, everything is back to normal. I suspect that the driver reverse the DAG epoch issue, rather than making GPUs mine faster.
I have tried the driver on RX 400 and RX 500 cards, though according to AMD webpage, the Crimson ReLive Edition Beta is compatible with a wide variety of GPUs, starting from the Radeon HD 7×00 series and up to the Vega edition.
To receive the latest updates follow me on social media! 🙂
Yes, i can confirm that everything is now back to normal! YAY, no more DAG epoch hashrate drop :), also i see a slightly less power consumption. Note that i used the exact same clocks, dcri, undervolt with both driver versions.
Sapphire Nitro+ RX 580 4GB 4x GPU Mining Rig
Finally i was able to test the RX 500 series (this should work for rx 570 and 580) since many of you were complaining about high power usage, undervolting and high temps, i had the same problems.. no matter what i tried Beta MSI Afterburner, Trixx, WattTool.. no luck.. in the end i tested with WattMan from AMD Driver Settings, after some tweaks i was able to undervolt them to 130w – 140w on DUAL MINING. This was a quick test but i will add soon more pictures with results.
This is a 4 GPU rig and before undervolting and downclocking, power usage was around 900+w (forgot to take a picture, will add it soon).
Clocks: 1130 / 2200
Core voltage: 850
Memory Voltage: 850
GPU temps: 50c with 75% fan speed
Ethereum Hashrate: 30.5 Mh/s
Decred Hashrate: 900 Mh/s
Total power usage: 650w (100w system)
Power usage per 1 GPU: 130w – 140w
Mission accomplished! Still room for improvements 🙂 the rig is running stable with not much hashrate fluctuations.
VERY IMPORTANT To overclock and undervolt the GPUs you will have to use .bat file commands. For example i used this commands for Sapphire Nitro+ RX 580 8GB: -cclock 1150 -mclock 2200 -cvddc 850 -mvddc 850, you can increased -mclock to 2250 and also if system crashes lower voltages from 850 to 875 or 900.