I think X99 with a 6-core CPU might be the best route at this point - as you state, it is clear that rapid IPC growth isn't something we can depend on so the ability to upgrade core count in the future without buying an entire new platform might be important.
If I had a 2600K @ 4.5Ghz, I'd wait until SLK-E. You waited this long, might as well wait 1 more year and get a 6-core SLK-E and an all new socket/chipset that will have a long life and one a newer architecture than BW-E.
Of course, if everyone is still buying quads due to these high prices, maybe core count won't matter for a long, long time.
At any rate, bring on Zen and let's see what happens.
I think they looked at their long-term roadmap and realized they are near the end of the road as far as CPU clocks and IPC goes. By slowing down the mainstream platform and allowing the workstation platform to catch up, when Sandy/Ivy/Haswell owners are up for upgrades, Intel may offer them a $434-450 6-core or a $399 4-core. They'll win either way since the workstation platform's mobo/chipset will have a premium while on the mainstream platform they'll have huge margins due to small die sizes.
If Intel teamed up with AMD and worked with PC developers to have more AAA DX12 games that benefit from 8-12 cores, they could spur upgrades. However, they a dilemma because if they do this, they are walking right into Zen's strength (8C 16T). I guess that's why they announced a change of strategy away from the traditional PC space, but remain focused on the PC enthusiast/overclockers space by raising prices on us with BW-E and now we might see more price hikes with SLK-X and KBL-X.
I'm not complaining since this trend saves me $$$ on CPU upgrades.
Not just CPUs....RAM, HDDs, SSDs, I/O interfaces are already in deep real-world diminishing returns territory.
Ya true, but JHH realized gamers have more descritionary income to spend since the main platform from Intel now lasts 5+ years. We save $ on the CPU/platform side but GPU side's prices are going way up. I am not even sure what Intel's strategy will be to get i7 3770K/i7 4770K/i7 4790K/i7 6700K users to upgrade. For sure the latter 3 of those CPUs will last until the end of PS4/XB1 generation (I am thinking 2019-2020).
Looking
at this chart, A9X is only as fast as a Intel Core i3-3217U. I looke up the scores of C2D T9800 2.93Ghz and it beats the i3-3217U in 3DMark06, CB10 single and multi. I have a couple friends using older C2D 2.0Ghz T5800/6400 laptops. Going to order T9800 online, upgrade them to W10 and put the SSD into the laptops. Those laptops will probably be good to go for another 2-3 years, enough until Icelake. Once my friends upgrade to Icelake in 2018-2019, I bet that laptop will last them 10+ years considering those C2D laptops are from early to mid-2009. :sneaky:
Intel needs to do something by working with software developers, or sooner or later the only sales of CPUs they will get will be the top 5% enthusiasts who want the latest and greatest, or only newer generations of people going to high school/university. Even firms will likely shift from a 2 year laptop replacement to 4-5 years.