This doubly confirms it. One huge pile of nonsense. Very high FPS loads are not comparable to 120@4K at all. The excessive coil whine in the 300 fps run should give that away... You're stressing the GPU in a radically different way. Where at 4K you might simply fully tax certain GPU bits, leaving the rest not fully utilized even if the GPU shows 100% utilization, at lower res you might cap out an entirely different part of the system. 4K pushes harder on memory and bandwidth for example.
I guess the OP has managed to lower himself to the gutter trash YT crowd rushing for clicks and headlines. No need to be right! We're clicking so goal achieved. Sad indeed.
I chuckled this morning when I saw Optimumtech's video. Not because it's wrong, but because there's no way to bring up this topic without drawing the ire of the internet Radeon crowd. It's not even news, it's not like all of a sudden after 6 months RDNA3 suddenly decided to become less efficient in these circumstances.
Look, discounting some of the power consumption and multi monitor quirks, the XTX is a great product. It's even coming down to an attractive price now, while Nvidia prices never budge. What's not to like?
You can framecap or undervolt all you want. RDNA3 simply does not get down to the same efficiency levels as Ada,
when under light loads or when
framecapped. All the "gains" that desperate youtube commenters or forum users point at to justify "omg optimumtech doesn't understand how to run RDNA3!!!" are pretty moot, considering Ada pulls even farther ahead when you apply those same undervolts or framecaps to Geforce.
I don't agree with OT's conclusion though. I don't think it's something to be fixed in driver (dude, just look at any XT or XTX's power consumption behaviour across the memory rails), but I also don't think it's something that necessarily needs to be fixed. There are plenty of reviews all around; most people don't buy the XTX for outright low power or efficiency, and anyone who potentially feels betrayed by AMD after discovering after purchase clearly didn't do much research. I think if Ali spent a little more time with the XTX staring at HWInfo or measuring with Elmor(?)/PCAT he'd know that it's not really a "problem". Though, with the especially space-efficient build he's been preoccupied with in recent months, I can understand why, since waterblocked the FEs offer a much smaller footprint than Navi31 and are therefore more suitable.
The 4080 running fanless is pretty familiar to most 40 series users - XT and XTX simply can't get to that level, or under 100W in most of those scenarios. And that's just fine, it comes with the [fanout link, chiplet] territory. It's not a deal-breaker for most, but that also doesn't mean you get to dismiss it as "niche" or "useless". Navi31 is a product that likes to run balls to the wall when it gets the chance; contrast the XT and 4070 Ti, the latter *in practice* is a very different product than its 285W "TDP" suggests.
As expected it is pretty funny to see people trashing Optimumtech on here though. Tell me you have 0 experience with SFF, without telling me you have 0 experience with SFF. Ali may not get into 100% depth or understanding in every product he reviews (especially when it comes to niche things like PBO2, mem OC, and some under the hood GPU stuff like here), but you'll be hard pressed to find anyone else with this level of SFF and watercooling experience. Some things only become clear when all of a sudden you have to pay attention to power and thermal constraints that don't exist in a massive 50L tower.
At least, that's all I can say, really. Don't wanna be dragged into another red vs green war that didn't need to exist because people don't watch whole videos or fully read all the text on the page.