AMD Radeon RX 6600 XT GPU is the best efficient crypto mining when it comes to low electric bills at the end of monthly periods. Great undervolted GPU core and overclocked memory clock settings gives bigger advantage towards AMD GPUs compared to Nvidia’s GeForce lineup in Windows OS and as well as HiveOS.
One mysterious YouTuber from Turkey has unlocked 33+ MH/s Ethereum performance hashrate from RX 6600 XT using only Radeon software without BIOS change.
Detailed overclock settings for RX 6600 XT is clearly seen on Radeon Adrenaline software. Specific numbers on memory clock at 2300 MHz, core clock set at 1250 MHz and core voltage brought down till 762mV. Results in mining hashrate is 33.22 MH/s on average without rejected shares overall. Electricity consumption is around 90W on the wall socket and mining software provides false numbers sometimes.
In comparison, RX 6600 non-XT model makes only 29-30 MH/s in Ethereum mining hashrate with same amount of power consumption. So, RX 6600 XT is the best choice for extra hashrate gain and resale value.
To conclude, RX 6600 XT is the best value card for mining Ethereum after seeing effective stable hashrate and power draw. In current market condition the RX 6600 XT only costs around $500 on eBay or Amazon.
Source: Alper Desdicioglu via YT