@Vayra86 Looking at the 60Hz VSync power consumption numbers and Gaming power consumption numbers from the review page, for all three RDNA3 cards and comparing them with RDNA2 cards, it seems that RDNA3 is just heavily optimized for low to medium load situations. When pushed too hard it loses that efficiency. And 7600 seems to be set out of it's efficiency curve.
View attachment 302292
You seem to keep missing the point. I am not looking at my power bill when talking about the power consumption in video playback. You insist on that.
What? No, I don't know if we need to ask the W1zz himself but AFAIK the Energy per frame chart is made up of the standard ultra settings suite. And given the fact all these cards have ran the same stuff, well...
60hz Vsync says nothing of efficiency, it says something about overall card performance relative to whatever is required to run the game at 60hz. Note that bigger cards need higher watts to run the same stuff at 60hz. Suddenly the energy per frame chart is turned upside down wrt where the 7600 is relative to a 7900XT(X). Obviously this has something to do with what we see elsewhere in lower load situations for these cards: they actually do NOT do low load situations well, even if they've dropped to 1/3rd of their maximum board power doing 60hz Vsync. Having a 7900XT, I know what clocks you're seeing then- somewhere along the lines of 1400mhz, perhaps even down to 1100mhz. With a peak stock of 2750, that's pretty damn dynamic in range. Another aspect is that higher tier cards carry a lot more VRAM and a much bigger die, so they play with voltages on a much bigger field; 0.1V is not as fine grained on a big GPU as it is on entry level.
And that of course echoes what we see in video playback and idle on RDNA3. They could simply do with a few more intermediate low load power states, is my guess, but that's probably harder going on chiplets. The world isn't ending here. We're seeing a child's disease of a new technology on GPUs. And it is, honestly, with the recent fixes, a mild one.
Its totally imaginable we'll see more dynamic power states in the future, perhaps they'll even manage to completely turn off specific chiplets to get an efficiency bump at low loads.
Efficiency where it matters, to me, is gaming at >60% load situations. That's where you'll be most of the time, or you'll be idling. Again... reality checks are in order, that low load gap of 30W (we see it here, again, in 60hz Vsync between the 7600 and 7900XT(X)!) is the equivalent of having one extra old school light bulb on in the house. Those
began at just about 25W. Honestly, who cares.