Look at the results of the Red Devil 5600 XT
https://www.techpowerup.com/review/powercolor-radeon-rx-5600-xt-red-devil/27.html
Overall, when averaged over our testing suite at 1080p resolution, we see the PowerColor RX 5600 XT Devil beat the NVIDIA RTX 2060, with a slim 2% lead—an important win. The card also slightly beats AMD's aging Radeon RX Vega 64, which is just as important a victory. The NVIDIA GeForce 16-series is far behind, as the GTX 1660 Ti is 17% slower, and the GTX 1660 Super is 19% slower.
This chip was never designed to compete against the 1660 IMHO. And this particular sku, with the updated bios, beats a 2060! But wait there is more nuggets of information:
Temperatures are a bit higher than competing cards, but still perfectly fine. Noise levels are outstanding. With only 28 dBA, the card is whisper quiet even when fully loaded. However, other cards are emitting just as little noise this round. For the RX 5700 XT, the Red Devil was the clear winner; here, the noise differences are tiny. In a surprise reversal, AMD's graphics cards are now quieter than their competing NVIDIA counterparts, who would have expected that.
So the only reason why temps are slightly higher is to make the card quieter.
But here is the meat of this post:
The secret sauce behind these impressive thermals is that AMD undervolted their Navi 10 GPU. Normally the GPU is designed to run at 1.15 V to 1.20 V. On the RX 5600 XT it ticks at 0.9 V before BIOS update and 1.0 V after the update. This brings with it tremendous power savings at the cost of maximum operating frequency. But limited frequency is actually something AMD wants.
These 5600xt on the RD don't appear to be just binned 5700 chips but revised/respun chips. They were able to reduce the core voltage of 1.15 - 1.20 volts down to 1 freaking volt! That's huge find! Before the updated bios it was only .9V. And we have a 5600 XT RD that beats a 2060 handily.
Now he goes on to say that the 5600 xt could tie/beat a 5700 with a heavy overclock (remember that's just an assumption). However, if you look at the results it's clear you wouldn't need the added .20V or 200mV in order to achieve that hypothetical scenario and that's at 6gb vs 8gb. Which indicates to me that these are some sort of revised/respun gpus being used in these 5600 XT RD.
Cliff Note:
AMD's 1.0 volt 5600 XT RD sku beats a 2060.
