The 7700k is losing in all aspects below w.r.t. the Ryzen 7 1800X, except absolute single-threaded perf. Intel is losing in:
- absolute multi-threaded performance
- relative multi-threaded performance per $
- memory bandwidth
- L3-cache bound workloads (AMD has twice more L3)
- price of motherboards
> - relative multi-threaded performance per $
Highly depends on the particular workload. Given the few benchmarks we have right now, it seems to go 50-50 once you factor in the lower price of the 7700k. At the very least, this one is close.
> - memory bandwidth
Seems about equal from the measurements I've seen (the theoretical numbers are irrelevant).
> - L3-cache bound workloads (AMD has twice more L3)
Cache-size bound workloads to be precise. Cache latency still seems higher, even on L3.
Overall, the 1800X seems to make the entire Broadwell-E series redundant on price/performance (at least at current price), no argument there. Against the 7700k, however, it's a very interesting decision, entirely based on the distribution of your workloads. And if Intel drops the prices on Kaby Lake, the value equation can change very quickly indeed.
http://www.guru3d.com/articles_pages/amd_ryzen_7_1800x_proce...
[1] https://www.pcper.com/reviews/Processors/AMD-Ryzen-7-1800X-R...