This is basically what AMD's "Naples" server/workstation platform is. There is rumored to be 16 core versions for workstations and up to 32 for high density servers. Clock speeds will probably be a bit lower because of the thermal density involved.
Yes, and if AMD is smart, they'll have a decent turbo on that and possibly the ability to OC, if you choose to use it as a workstation. The 16c/32t would be mighty interesting. I think the most powerful machine you can get through custom ordering is the Z840 with 44c/88t. So if the 16c/32t Naples is cheap, say around 1,200-1,600, it's going to be a really good processor for professionals and people who simply care about expanded workload over something niche like gaming. It's going to be a dream for content creators who need above and beyond performance. Alas, we have to wait and see.
IF AMD really has hit it out of the park and goes after Intel with Naples, when and if I do upgrade in a few years from my IB-E system, I will go for the 16 or 32 core, provided the latter's price comes down at some point, or if they bring in something like a 20 core, 26 core whatever Naples.
I had buyer's remorse with my IB-E system but that quickly faded.
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So, 1800X would cost the double of 1600X for 33% more cores.
Probably not. There's a rumor that their 4c/8t will be around $220 and the 4c/4t will be even cheaper. I was close with my 1800X estimate, not so much the others in the R7 lineup, as I overshot on those.
What doesn't make sense is the pricing disparity between the 1700X and the 1800X. $100 for 200 Mhz of speed on base and turbo. I suspect the 1800X price will drop 1.5-3 months post release. Which would actually fall in line with Intel's price playbook in 2006.
Edit: Can anyone confirm that Ryzen will make available the ability to use 8 SATA 6Gb/s ports versus Intel's standard 6 ports? Usually on Intel boards, even high priced ones, the extra 3 or 4 are third party.