Interestingly I'd say the Xeon 1680 V2 was probably the best chip ever made which almost no one would have bought - only available to OEMs for the most part and hard to get via retail unless you had the right contacts, also with the approx. £2000 launch price tag and holding its value few would have bought one.
8 core, 16 threads from 2013 with a full range of technologies which are only just becoming obsolete - USB3, PCIE3, etc. etc.
If you get a good clocker, and many of them were, 4.7+GHz stable is possible putting them competitive against the AMD 3000 series and not hideously outclassed by the 5000 series for gaming, though can't compete with it for heavy weight productivity titles.
Also a good showing for the 5960X in that video.
Personally don't think a lot of the CPUs people talk about in this thread can hold a candle to these 2 CPUs when you move beyond what the CPU offered within its generation.