First:Intel® Server Board S5520HCSpecificationsProcessor support: Up to 2 Intel® Xeon® processors 5500 or 5600 seriesΣ
Intel® Xeon® Processor E5645
Home/ Intel® Processors/ Intel® Xeon® Processor 5000 Sequence/ Intel® Xeon® Processor 5600 Series/ E5645
Third:S5520HC Firmware Update PackageVersion:60;58;30;112Status:Latesthttp://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=20641&ProdId=3069&lang=eng http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=20641&ProdId=3069&lang=eng In other words, it should work but it doesn't harm to upgrate the BIOS too.
Why i asking, i got this and it's not working. A similar case http://www.tomshardware.com/forum/272649-31-intel-s5520sc-dual-xeon-w5580-boot-problem http://www.tomshardware.com/forum/272649-31-intel-s5520sc-dual-xeon-w5580-boot-problemIntel Engineer sample CPUs will NOT run on intel motherboards (they doesn't work on a Intel s5520sc).
They will on ASUS.
My cpus are xeon W5580 ES and now they are running on a ASUS Z8PE-D12X motherboard.
Anyway, i wanted hear answer from the intel officially, but i guess they'll never tell me, cause ES processors it's a little bit illegal i think.
And of course i tried to update bios from Bios recovery...