There was one (to me critical) missing measurement in MSI MEG X570 Ace review ... sound level emanating from PCH fan. Having read several whining PCH fan the Aorus X570 Master (reviews) ... to me THIS related sound level measurement would be the deal breaker ... not a probably imperceptible mhz of performance here or there. From the test result posted ... one could intuit that the position of fan results in poorer cooling ... but the PCH fan placement gains from unobstructed output positioning and perhaps better/larger fan design from MSI fan design experience. Since the PCH temp seems to run higher ... the question is open if this causes the fan to work harder and the term wear and tear implications. I'm replacing a system now as much as anything because of noise. New system case will be Fractal Design S2 ... may replace case fans with Noctura ... depending on performance.