If the old 3-4 year old stuff (and some of the 6-8 year old stuff as well) is performance equal to the current new 14nm stuff, what should a PC person do?I can give you my read on it, fresh this weekend.
I toasted the power supply in my little Dell box, by stressing it and letting dust bunnies build up over the air vents resulting in a classic thermal kill. My bad, I killed it. Simple carelessness, really.
My bad again, a new to me used power supply is $50 for the machine and please remember the machine complete only cost me $80 shipped to my door as a refurb wonder two Thanksgivings ago. Plus, who can guarantee that the power supply was the only thing that was thermal killed? Overheating is a systemic type issue, MB, Drives, Memory you name it can all be affected by excess heat to some degree or another ....
Oh, what to do, what to do ......
Guess what, them marvelously powerful dirt cheap refurb wonders are still out there if you go look a bit, a whole NEW generation of them dusty wonders are coming off lease right now with whole better generations of processors and memory and hard drives, etc. compared to my old cheapie box and they getting sold off by the thousands all over the place even as we speak. For prices ranging from cheap to retail no less, depending on where you go to looking at them.
So, go to the larger refurb houses and look for tail ends and leftovers for the very best deals.
So, instead of paying $50 for a power supply, I bought a whole new larger machine with bigger/better everything for $87.95 delivered to my door. (them ungrateful sods actually charged me sales tax, the gall of them boys !!!!) and
with a one year warranty included (wow, never had one of those warranty thingies before on a cheap refurbie unit).
And, I betcha I can take them two each 2 gig memory sticks out of the existing slightly dead Dell box and plug them into empty slots in the new box to give me either 6 or 8 gigs of systems memory (depending on slots and stick sizes) --- won't that be nice?
Now I will have me 8 full sized USB 2.0 ports on the new box, one of every other sort of I/O port that exists, a read write DVD drive
and a read write CD drive and a 3.5 floppy drive plus a bigger stronger power supply and Win 7 pro already loaded on the 3x bigger hard drive just a salivating to be upgraded to Win 10 ....
--- and I will likely just run Linux Mint on it all the time except when gaming an antique Win only game that is not out on Steam yet.
THAT is what you do about Intel's current implosion --- you ride it like a little pony for all it is worth. 
For me, FASTER/BETTER in the future will likely come from a change in OS, not from better stronger hardware. The hardware I just bought for less than $100 is MANY times stronger than what I need to run Linux Mint --- 10 times stronger as a matter of fact.
Please Remember, Win 10 is NOT any sort of performance improvement to anything, it IS THE EXACT SAME AS Win 7 as far as speed and performance goes.
So a mid generation Win 7 machine is still a fairly fast powerful Win 10 machine too.
In any case, dual booting the MUCH FASTER Linux Mint gives you the best of both speed and performance, while Win 7 (or Win 10 as the case may be) can give you "the same old Windows experience" you have suffered through for the last 15 years (but hey, you apparently have managed to convinced yourself that you "really need" to have it around, right?)
And yes, you really can buy what you really need in a 3.3 gigahertz Core 2 Duo rig with 4 gigs of systems memory in a full sized Dell business class tower (with the larger power supply) from Dell Leasing or from one of the many other Ebay resellers of the huge mass of just coming off lease business level machinery.
Remember, the Ebay guys are a lot cheaper ...... $87.95 delivered to my door. (them ungrateful sods charged me sales tax though, the gall of them boys !!!!)