According to Siliconlottery.com 7700K's require higher voltage to reach 5.0 then 4790K's take to reach 4.9. So 100Mhz improvement for slightly higher power draw.. How is this any different than any other product using a much more mature manufacturing process?
What % of 4790Ks could even get to 4.9GHz? What % of 7700Ks can get to 5GHz+?
SiliconLottery says 56% of all 7700Ks tested can get to 5GHz+. I don't think 4790K at 4.9GHz was anywhere near as common. 6700Ks that could do 5GHz stable on reasonable cooling (high end Air or AIO) were unicorns.
Any different than vanilla 7970's to 280X 1ghz? Those were commonly called rebrands yet 280x improved frequency curves with some small decoding/encoding improvements like Trueaudio.
I am not familiar with what AMD said about the 280X. Did they explain the changes that they made to the silicon, if any? Anyway, 280X was eventually replaced with a Tonga-based solution, was it not?
This is the exact same! Intel released Kaby Lake purely as a preemptive marketing move against Ryzen. I'd be floored if anyone claims that Intel released Kaby Lake purely on their own accord when they have NEVER done a full naming update without a true process or architecture upgrade.
You are right, and it hasn't changed here. Kaby Lake adds new features (much better media block, which is very important for mass market PCs), it brings a performance-enhanced process (the changes made in 14nm+ compared to 14nm are not trivial), and they had to redo the physical design to actually make use of the new process. They did not simply have their process technology guys come up with a new process recipe and then hit a button in the factory that magically allowed them to take the same Skylake design and make them into Kaby Lakes by virtue of being run thru this new process.
There was serious work that went into taking advantage of the new process.
And to be clear the process changes were not trivial. They changed the fin height with 14nm+ and made a bunch of tweaks to the metal stack for more performance, too. It is a fair bit more than your typical mid-life optimization.
Intel merely stopped cheaping out on the thermal "solder" for their "high performance" CPUs and took advantage of the ever present fact that manufacturing improves over time and called this a new generation.
No, I explained to you why this isn't the case.
Why are you ignoring the fact that motherboards cost nearly twice as much on average for these higher core count processors? That factors in hugely to platform costs. And again you're using this historical consumer "data" to prove something that won't be relevant to shoppers looking at Zen core counts.
Cheapest X99 board:
https://www.newegg.com/Product/Product.aspx?Item=N82E16813157542&cm_re=x99-_-13-157-542-_-Product - $190
Cheapest Z270 board:
https://www.newegg.com/Product/Product.aspx?Item=N82E16813128975&cm_re=z270-_-13-128-975-_-Product - $110.
You are right, there is a significant price differential here, but the difference isn't inherently due to the socket or the chipset, it is due to the fact that X99 boards are explicitly targeted at enthusiasts. They need to have higher quality components because the mobo makers need to assume that they are going to be overclocked, and the assumption is that performance/features matter.
Just as some examples, the cheap-o X99 board supports SLI, while the cheap-o Z270 board does not. You get an Intel LAN chip on the X99, but you get a Realtek on the Z270, etc.
Really, I don't know why somebody would cheap out on the motherboard for a serious gaming PC.
Haven't you yourself said upgrading from Haswell to Skylake is a sensible upgrade? What kind of argument is based on "what people are saying"? The fact remains there is often a 5-10% performance gap between Intel's latest generations. Not apples to apples.
Did I say this? I mean, *I* personally upgraded from Haswell to Skylake to Broadwell-E and then to Kaby Lake, but I am a crazy hobbyist who buys the new shiny toys because I like the new shiny toys. Realistically, if I weren't a hobbyist, I'd have stayed with the 4790K I bought a long time ago and would be running it -- probably with no complaints -- today.
I wouldn't recommend that somebody upgrade to a 7700K from a 4790K/4770K unless there is a platform feature that they really want (M.2 SSDs, for example).