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You need to review the information stated on the tab BDW-DE to BDW-DE NS changes of the Broadwell-DE NS SoC Ballout Signal and Mechanical Package document # 567993 to answer your first and last questions.
You should review the information stated on page 15 of the Intel(R) Xeon(R) Processor D-1500 NS and D-1600 Product Families Thermal and Mechanical Specification and Design Guide (TMSDG) Addendum document # 569152, where are listed the Broadwell-DE NS devices.
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