I'm told it is a early 1st run/pre-production 8260L. That's why it shows B1/L1/R1 as revisions, as QS supposedly only went to B1.
All cores speed is 3.1ghz, all cores AVX 2.0 is 2.6ghz, all cores AVX-512 is 2.3ghz
2 cores speed is 3.9ghz, 2 cores is AVX 2.0 is 3.7ghz, 2 cores AVX-512 is 3.7ghz...