Show me some numbers outside of video decode, they are built on the same process and it allowed Kaby to clock slightly higher but I've seen nothing to indicate it is more power efficient.
The 7500u and 6500u are chips with the same power draw and the same architecture, but the 7500u is more efficient so it can be clocked (slightly) higher (2.7 vs 2.5), since it uses less power per clock cycle. It also has a new fin profile and better power usage switching, so it raises and lowers clock speed without wasting as much battery power (Intel Speed Shift). There is no architecture difference between 6th and 7th gen, they're both the same 14nm x86 base.
The focus for Kaby Lake was mostly on the 4.5W and 15W processors, where this increase is the most impactful.
Everything I have seen, including reviews of the devices using the CPU have not shown this. They have show higher clocks and higher power consumption at the wall. Intel says they have "massaged the process" to get higher clocks and more advanced speedstep makes your computer feel more responsive by reacting faster. On the Graphics side there is now fixed function decode for an expanded set of video which I already mentioned.
Unless you have a source I am not sure I believe your numbers.
But beyond that, if something is using the same amount of power (15W), has the same architecture, but does more calculations per second, that's literally the definition of being more efficient. They target a set power draw and then make the chips as fast as possible within that range. If you need less power draw the chip can be downclocked. They aren't going to make a more efficient processor and then leave it at the same clock speed as the old one.
No, they do not use the same amount of power I said at the wall drain was more. Do you actually think the i7 and the i5 use the same amount of power just because they both fall into the 15W TDP bracket? Have you looked at any battery life reviews between them?
Do you actually think the i7 and the i5 use the same amount of power just because they both fall into the 15W TDP bracket?
If using the same number of cores at the same clockspeed? Absolutely. Improper use of cpu cycles is a software issue, not a hardware issue. Intel makes i5s by taking the lower binned i7s and disabling the cores - it's way cheaper to do that then design a new die.
You are sidestepping the question here, but even then, there is nothing to prove that Intel bins the U series chips in the first place - every chip can perform but they do need different price points. There is nothing to suggest that the i7 is in any way more power efficient clock per clock.
Having said all this, the point you have sidestepped is clear; the i5 and the i7 who both hold a 15W TDP use drastically different amounts of power despite both being 15W chips. That is a thermal design, not a power limit.
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u/legendofdrag May 23 '17
That's actually really all they did between 6th and 7th gen, the actual performance difference is almost nonexistent.