There are in fact three die 'flavors' for the Ivy Bridge-EP, meaning that they are manufactured and organized differently, according to the number of cores an Ivy Bridge-EP CPU includes: The basic Ivy Bridge-E is a single-socket processor sold as Core i7-49xx and is only available in the six-core S1 stepping, with some versions limited to four active cores. Ivy Bridge-EP introduced new hardware support for interrupt virtualization, branded as APICv.Support for up to eight DIMMs of DDR3-1866 memory per socket, with reductions in memory speed depending on the number of DIMMs per channel.Thermal design power between 50 W and 155 W.Up to 15 CPU cores and 37.5 MB 元 cache for Ivy Bridge-EX (released on Februas Xeon E7 v2 ).Up to 12 CPU cores and 30 MB of 元 cache for Ivy Bridge-EP.Dual memory controllers for Ivy Bridge-EP and Ivy Bridge-EX.Gladden was offered in BGA 1284 package for embedded applications.Ivy Bridge Xeon with LGA 1155 socket were mostly identical to its desktop counterparts apart from the missing IGPU despite branded as Xeon processors.Ivy Bridge-EN uses a smaller LGA 1356 socket for low-end and dual-processor servers on certain Xeon E5 and Pentium branded models.

It supports up to eight socket motherboards.

Ivy Bridge-EX introduces new LGA 2011-1 socket and features up to 15 cores.

Ivy Bridge-EP which also uses LGA 2011 socket for the Xeon E5 models aimed at high-end servers and workstations.

Ivy Bridge-E uses LGA 2011 socket and was branded as Core i7 Extreme Edition and Core i7 high-end desktop (HEDT) processors, despite sharing many similarities with Xeon E5 models.

There are five different families of Xeon processors that were based on Sandy Bridge architecture: Intel Ivy Bridge–based Xeon microprocessors (also known as Ivy Bridge-E) is the follow-up to Sandy Bridge-E, using the same CPU core as the Ivy Bridge processor, but in LGA 2011, LGA 1356 and LGA 2011-1 packages for workstations and servers.

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