This is problem! On the entire series of video cards PowerColor Red Dragon. My 5700 - boost (official 1750). And he adheres to them, but in all applications (amd drivers, msi afterburner and etc.) he writes in fact 1850. And my friend has an XT version of the video card.
He also shows 100Hz less, while if he accelerates the frequency to the same 100Hz - it still works.
It does not matter the voltage, power and temperature limits. The cant was either from the company or from AMD!
Everywhere the wrong frequencies are displayed in the entire PowerColor Red Dragon line! Sorry for the mistakes, because I'm from Russia. At our popular overclocking forum, there are at least 5 more people who have the same cards and the same problems.
It is necessary for AMD to correct overclocking. And so that the cards would fix the initially correct frequency.
I know that it all depends on the success of the chip, and many XT accelerate in frequency to 2000+, this factor does not play a role here. The error is in the AMD software or BIOS from the company mentioned above. But I think AMD can fix the situation, but their chips.
I ask the moderators to transfer the topic where it will be right!