First: Thank you for your lengthy and well-thought-out response to my questions. There is no "one configuration works for everyone" here - that's the beauty of being a hardware enthusiast.. even if you're more of an armchair enthusiast like myself.
Second, to answer your question, there are X99-based motherboards with Alpine Ridge the Gigabyte X99P-SLI is supposed to have it. I also see the ASUS' "refresh" motherboards are supporting an Alpine Ridge-based add-on card per http://www.fudzilla.com/news/40663-asus-announces-new-rog-strix-x99-gaming-motherboard
For myself: I'm leaning more towards the 6800 on the X99 platform. All of these motherboard chipsets are "doomed" to eventually fade into obsolescence over the years. We just have to buy and hope that our choices will last long enough to reduce the TCO for us while providing maximum bang-for-the-buck at the time we buy.
The 6700K vs 6800K question is almost a joke since the differences aren't too extreme. Socket 1151 has at least 1 more processor upgrade for it but do we want to buy today based on what might come later (and is already known to have a new motherboard chipset - the Z270, if I am not mistaken).. or do we go with the established-and-venerable Socket 2011-v3 and either the Haswell-E or Broadwell-E CPUs, knowing that BDW-E is the last CPU for the socket?
It's not an easy question but I am finding myself leaning more-and-more towards the 6800K just to have the extra cores..even if I never need them.
The Gigabyte GA-X99P-SLI doesn't look too bad, but be careful with the BIOS if you go for any of the BDW-E CPUs: you aren't guaranteed compatibility out of the box for the new CPUs with an "older" motherboard like that one or the GA-X99-UD3P.
Why does this remind me of the old "640K ought to be enough for anybody." quote (that may or may not be legitimately tied to Bill Gates)? Hah!Not that I will ever have a reason to need 22 cores and 44 threads.
Are there X99 ATX mobos with four evenly-spaced PCI-E x16 slots? (Even if they are electrically x8?)
I own what I consider to be a magnificent (Edit: AMD 6-core, Thuban) workstation board of the time, an MSI 790X-something, that has four evenly-spaced PCI-E x16 slots, that can run in x16/x16 or x8/x8/x8/x8. I have used it for distributed-computing, with three or four video cards (single-slot, in my case), power-supply permitting.
I would like to do something like that again, build a nice "crunch rig", maybe with 4x Polaris 10 / RX 480 cards, if they are really $200. (Like the list price of my single-slot HD4850 cards before them.)
Would such a mobo, if it exists, work in x8/x8/x8/x8 mode, with a 6800K CPU? Or would you need a 6850K or whatever the one with more PCI-E lanes? I'm pretty budget-conscious, so if this isn't going to work with the cheaper chips, I probably won't do it.
Edit: This one looks pretty nice:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128885
Decided. I'm getting the 6950X. I voted now but will be ordering it when the Asus Rampage V Edition 10 is out. Good news is that the price has already dropped a bit in the EU from EUR 1799 to around 1710, so...(lol).
6950X @ 4GHz vs. 5960X @ 4GHz
Nice. Is 4GHz as high as it goes? What Vcore did you need in order to hit that frequency? What temps are you seeing at load?
That's probably true, and if anyone has a problem mating an older X99 board with a Broadwell-E chip, they might send it to someone like me with a Haswell-E that would flash it for them.The Gigabyte GA-X99P-SLI doesn't look too bad, but be careful with the BIOS if you go for any of the BDW-E CPUs: you aren't guaranteed compatibility out of the box for the new CPUs with an "older" motherboard like that one or the GA-X99-UD3P.
I don't know if I can't until mid July like I was planning for this...
Been working in Lightroom all week and my 4 core lynnfield is not cutting it. UGH
I need that 6800k NOW!
Asrock X99 professional or Asrock X99 OC formula. I think Asrock was the first company with a BW-E ready bios.
Nice. Is 4GHz as high as it goes? What Vcore did you need in order to hit that frequency? What temps are you seeing at load?