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Forthcoming Intel Xeon E5 family will be separated into 4 subfamilies, based on intended market. Xeon E5-4600 will support up to 4-way servers, E5-2400 and E5-2600 will target 2-way servers and workstations, and E5-1600 series will work in uni-processor systems. In the past months we reported on details of E5-1600, E5-2400 and E5-2400 families, whereas model lineup of E5-4600 family was not known up to this moment. On Saturday January 7, 2012, Intel added Xeon E5 box part numbers and S-spec numbers to Material Declaration Data Sheets (MDDS) database. This addition confirmed processor numbers of one- and two-way Xeon E5 chips, and revealed E5-4600 processor numbers:
According to MDDS database, Xeon E5-4600 series will consist of at least 8 models. Xeon E5-4603 will be based on Sandy-Bridge-EP-4 core, which means that it will have 4 or fewer cores. Remaining 7 processors, including low-power E5-4640L and E5-4650L CPUs, should have 6 or 8 cores. Xeon E5-4600 box part numbers, related processor numbers, and associated S-Spec codes are listed below:
The database lists only one chip from E5-1600 series: Xeon E5-1660 with box part number BX80621E51660, and two S-spec numbers SR0KN and SR0H2, perhaps with different core steppings. Two other E5-1600 SKUs, expected to launch this quarter, are E5-1620 and E5-1650.
The MDDS database has 7 SKUs from E5-2400 family. This list is incomplete, as it doesn't include 5 low-power Xeons from the series. These microprocessors will be available in Q2 2012. Model, s-spec and Box part numbers of standard-power processors are provided below:
These Xeon E5s will be released this quarter:

According to MDDS database, Xeon E5-4600 series will consist of at least 8 models. Xeon E5-4603 will be based on Sandy-Bridge-EP-4 core, which means that it will have 4 or fewer cores. Remaining 7 processors, including low-power E5-4640L and E5-4650L CPUs, should have 6 or 8 cores. Xeon E5-4600 box part numbers, related processor numbers, and associated S-Spec codes are listed below:
Code:
Model number Box part number S-spec(s)
E5-4603 BX80621E54603 SR0LF
E5-4607 BX80621E54607 SR0KU / SR0JL
E5-4610 BX80621E54610 SR0KS / SR0JJ
E5-4620 BX80621E54620 SR0JP / SR0L4
E5-4640 BX80621E54640 SR0KT
E5-4640L BX80621E54640L SR0JK
E5-4650 BX80621E54650 SR0KJ
E5-4650L BX80621E54650L SR0L3 / SR0JN
The database lists only one chip from E5-1600 series: Xeon E5-1660 with box part number BX80621E51660, and two S-spec numbers SR0KN and SR0H2, perhaps with different core steppings. Two other E5-1600 SKUs, expected to launch this quarter, are E5-1620 and E5-1650.
The MDDS database has 7 SKUs from E5-2400 family. This list is incomplete, as it doesn't include 5 low-power Xeons from the series. These microprocessors will be available in Q2 2012. Model, s-spec and Box part numbers of standard-power processors are provided below:
Code:
Model number Box part number S-spec(s)
E5-2403 BX80621E52403 SR0LS
E5-2407 BX80621E52407 SR0LR
E5-2420 BX80621E52420 SR0LN
E5-2430 BX80621E52430 SR0LM
E5-2440 BX80621E52440 SR0LK
E5-2450 BX80621E52450 SR0LJ
E5-2470 BX80621E52470 SR0LG
These Xeon E5s will be released this quarter:
Code:
Model number Box part number S-spec(s)
E5-2603 BX80621E52603 SR0LB
E5-2609 BX80621E52609 SR0LA
E5-2620 BX80621E52620 SR0H7 / SR0KW
E5-2630 BX80621E52630 SR0H6 / SR0KV
E5-2640 BX80621E52640 SR0H5 / SR0KR
E5-2650 BX80621E52650 SR0H4 / SR0KQ
E5-2660 BX80621E52660 SR0KK / SR0GZ
E5-2665 BX80621E52665 SR0L1 / SR0HB
E5-2667 BX80621E52667 SR0H3
E5-2670 BX80621E52670 SR0KX / SR0H8
E5-2680 BX80621E52680 SR0KH / SR0GY
E5-2687W BX80621E52687W SR0GX / SR0KG
E5-2690 BX80621E52690 SR0L0