Intel i5-2500K BX80623I52500K User Manual
Product codes
BX80623I52500K
Datasheet, Volume 1
21
Interfaces
2.1.3
System Memory Organization Modes
The IMC supports two memory organization modes—single-channel and dual-channel.
Depending upon how the DIMM Modules are populated in each memory channel, a
number of different configurations can exist.
Depending upon how the DIMM Modules are populated in each memory channel, a
number of different configurations can exist.
2.1.3.1
Single-Channel Mode
In this mode, all memory cycles are directed to a single-channel. Single-channel mode
is used when either Channel A or Channel B DIMM connectors are populated in any
order, but not both.
is used when either Channel A or Channel B DIMM connectors are populated in any
order, but not both.
2.1.3.2
Dual-Channel Mode – Intel
®
Flex Memory Technology Mode
The IMC supports Intel Flex Memory Technology Mode. Memory is divided into a
symmetric and an asymmetric zone. The symmetric zone starts at the lowest address
in each channel and is contiguous until the asymmetric zone begins or until the top
address of the channel with the smaller capacity is reached. In this mode, the system
runs with one zone of dual-channel mode and one zone of single-channel mode,
simultaneously, across the whole memory array.
symmetric and an asymmetric zone. The symmetric zone starts at the lowest address
in each channel and is contiguous until the asymmetric zone begins or until the top
address of the channel with the smaller capacity is reached. In this mode, the system
runs with one zone of dual-channel mode and one zone of single-channel mode,
simultaneously, across the whole memory array.
Note:
Channels A and B can be mapped for physical channels 0 and 1 respectively or vice
versa; however, channel A size must be greater or equal to channel B size.
Figure 2-1. Intel
®
Flex Memory Technology Operation
C H B
C H A
B
B
C
B
B
C
N o n in t e r le a v e d
a c c e s s
a c c e s s
D u a l c h a n n e l
in t e r le a v e d a c c e s s
in t e r le a v e d a c c e s s
T O M
B – T h e la r g e s t p h y s ic a l m e m o r y a m o u n t o f th e s m a lle r s iz e m e m o r y m o d u le
C – T h e r e m a in in g p h y s ic a l m e m o r y a m o u n t o f th e la r g e r s iz e m e m o r y m o d u le
C – T h e r e m a in in g p h y s ic a l m e m o r y a m o u n t o f th e la r g e r s iz e m e m o r y m o d u le