Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 2 01-2011 Datasheet page 81

Processor Configuration Registers
B/D/F/Type:
Address Offset:
Default Value:
Access:
Size:
BIOS Optimal Default:
Bit
7:4
3:3
2:0
Datasheet, Volume 2
0/0/0/PCI
E4–E7h
00000000h
RO-FW, RO-KFW
32 bits
000000h
Reset RST/
Attr
Value PWR
RO-FW 0h
RO 0h
RO-FW 000b Uncore
Description
Reserved
Reserved
DDR3 Maximum Frequency Capability (DMFC)
This field controls which values may be written to the Memory
Frequency Select field 6:4 of the Clocking Configuration
registers (MCHBAR Offset C00h). Any attempt to write an
unsupported value will be ignored.
000 = MC capable of "All" memory frequencies
101 = MC capable of up to DDR3 1600
110 = MC capable of up to DDR3 1333
111 = MC capable of up to DDR3 1067
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