Kontron KTG41/ATXu, Руководство пользователя

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KTD-00781-A KTG41 family Page 16 of 78
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2.4 System Memory support
The KTG41 has two onboard DDR3 DIMM sockets and support the following memory features:
DDR3-800/1066 DIMM 240pin DRAM modules (PC3-6400/PC3-8500)
•
1.5V (only) 240-pin DDR3 SDRAM DIMMs with gold-plated contacts
•
DDR3-800 (PC3-6400), DDR3-1066 (PC3-8500) SDRAM DIMMs
•
DDR3-800/1066 DIMM with SPD timings supported
•
Unbuffered, single-sided x8/x16 or double-sided x8/x16 DIMMs
•
4 GB maximum total system memory using 64-bit OS. (Shared Video Memory is withdrawn).
•
4 GB maximum total system memory using 32-bit OS. ~3GB is displayed in System Properties.
(Shared Video Memory is withdrawn).
•
Minimum total system memory: 512 MB
•
Non-ECC DIMMs
•
Serial Presence Detect
The installed DDR3 SDRAM should support the Serial Presence Detect (SPD) data structure. This allows the
BIOS to read and configure the memory controller for optimal performance. If non-SPD memory is used, the
BIOS will attempt to configure the memory settings, but performance and reliability may be impacted.
Memory Operating Frequencies
Regardless of the DIMM type used, the memory frequency will either be equal to or less than the processor
system bus frequency. For example, if DDR3 800 memory is used with a 800 MHz system bus frequency
processor, the memory clock will operate at 400 MHz. The table below lists the resulting operating memory
frequencies based on the combination of DIMMs and processors.
DIMM Type Processor
system bus
frequency
[MHz]
Memory
Data
transfers
[Mill/s]
Resulting
memory clock
frequency
[MHz]
Module
name
Peak transfer
rate
[MB/s]
DDR3 800 800 800 400 PC3-6400 6400
DDR3 800 1066 800 400 PC3-6400 6400
DDR3 800 1333 800 400 PC3-6400 6400
DDR3 1066 800 1066 400 PC3-8500 8533
DDR3 1066 1066 1066 533 PC3-8500 8533
DDR3 1066 1333 1066 533 PC3-8500 8533
Note
: Kontron offers the following memory modules:
•
P/N 1028-6891, DDR3-RAM,
1GB
, 240p, 800MHZ, PC3-8500, DIMM
•
P/N 1028-6892, DDR3-RAM,
2GB
, 240p, 800MHZ, PC3-8500, DIMM
Memory Configurations
1. Asymmetric mode (Single channel). This mode is equivalent to single channel bandwidth operation. This
mode is used when only one DIMM is installed or two DIMMs with different memory capacities are installed.
Technology can vary from one DIMM to the other but if different speed is used, the slowest memory timing
will be used.
2. Interleaved mode (Dual channel). This mode offers the highest throughput. Dual channel mode is enabled
when two DIMM with same memory capacity are installed. Technology can vary from one DIMM to the other
but if different speed is used, the slowest memory timing will be used.
DDR3 DIMM (SLOT 1)
DDR3 DIMM (SLOT 2)