Apple Processor Type Information (Type 131)

Source: the AppleSmBios.h header of OpenCore, Include/Apple/IndustryStandard.

Tells the type of the processor, by which macOS names it, e.g. 0x0701 for the first generation of Intel Core i7 in apple/imac11-3.bin. The Intel reference code gives type 131 to the Intel vPro information too.

Table 1. Apple Processor Type Information structure
Offset	Version	Name	Length	Value	Description
`0x00`	2.0+	Type	`BYTE`	`131`	Apple Processor Type Information indicator
`0x01`	2.0+	Length	`BYTE`	Varies	Length of the structure
`0x02`	2.0+	Handle	`WORD`	Varies
`0x04`	2.0+	Processor Type	`WORD`	Varies	Class of the processor in the high byte, see Processor Classes, and its generation within the class in the low byte
`0x06`	2.0+	Reserved	2 `BYTE`	`0`	On newer firmware

1. Apple Processor Type Information — Processor Classes

Table 2. Apple Processor Type Information: Processor Classes
Value	Meaning
`0x00`	Unknown
`0x02`	Intel Core
`0x03`	Intel Core 2
`0x04`	Intel Xeon (Penryn)
`0x05`	Intel Xeon (Nehalem)
`0x06`	Intel Core i5
`0x07`	Intel Core i7
`0x09`	Intel Core i3
`0x0A`	Intel Xeon E5
`0x0B`	Intel Core M
`0x0C`	Intel Core m3
`0x0D`	Intel Core m5
`0x0E`	Intel Core m7
`0x0F`	Intel Xeon W
`0x10`	Intel Core i9