Multi-threaded focus
The floating-point intensive 7-Zip compression test slightly favours the Core i7-3820. There's no making up for a deficit in cores and threads, obviously.
And the cheapest LGA2011 keeps the comparative lead in the all-core-load wPrime. Bear in mind that it runs at a slightly higher frequency and has more memory bandwidth than the Core i7-2700K.
The Core i7-3820's figures remain in the same ballpark as a four-core, eight-threaded LGA1155 CPU; just as one would suspect.