KTD-N0882-I
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System Specification
KTQ87/KTH81 Users Guide
3.4
System Memory support
The KTH81/mITX, KTQ87/mITX and KTH81/Flex have two DDR3 UDIMM sockets while the KTQ87/Flex has
four DDR3 UDIMM sockets. The sockets support the following memory features:
•
DDR3 1.5V/1.35V UDIMM 240-pin
•
Dual-channel with 1 UDIMM per channel (2 UDIMM for KTQ87/Flex)
•
Single/dual rank unbuffered 1333/1600MT/s (PC3-10600/PC3-12800)
•
The supported 4
rd
Generation Core i5/i7 support 1333/1600 MT/s
•
From 1GB and up to 2x 8GB (4x 8GB for KTQ87/Flex).
o
Note: Less than 4GB displayed in System Properties using 32bit OS
o
(Shared Video Memory/PCI resources is subtracted)
•
SPD timings supported
•
ECC supported
The installed DDR3 DIMM 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 1600 memory is used with a 1333 MHz system bus frequency
processor, the memory clock will operate at 167 MHz. The table below lists the resulting operating memory
frequencies based on the combination of DIMMs and processor.
DIMM Type
Module
name
Memory Data
transfers
[MT/s]
Processor system
bus frequency
[MHz]
Resulting memory
clock frequency
[MHz]
Peak
transfer rate
[MB/s]
DDR3 1333
PC3-10600
1333
1333 / 1600
167
10666
DDR3 1600
PC3-12800
1600
1333
167
10666
DDR3 1600
PC3-12800
1600
1600
200
12800
Notes
: Kontron offers the following memory modules:
1GB DDR3 1333 PC3-10600, P/N: 1031-9872
2GB DDR3 1333 PC3-10600, P/N: 1054-3702
4GB DDR3 1333 PC3-10600, P/N: 1054-3703
8GB DDR3 1333 PC3-10600, P/N: 1054-3704
1GB DDR3 1600 PC3-12800, P/N: 1054-3706
2GB DDR3 1600 PC3-12800, P/N: 1054-3707
4GB DDR3 1600 PC3-12800, P/N: 1054-3708
8GB DDR3 1600 PC3-12800, P/N: 1052-5601
Memory modules have in general a much lower longevity than embedded motherboards, and therefor EOL
of modules can be expected several times during lifetime of the motherboard. Kontron guarantees that the
above P/N will be maintained so that EOL module will be replaced by other similar type of qualified module.
As a minimum it is recommend using Kontron memory modules for prototype system(s) in order to prove
stability of the system and as for reference.
For volume production you might request to test and qualify other types of RAM. In order to qualify RAM it
is recommend configuring 3 systems running RAM Stress Test program in heat chamber at 60
⁰
C for a
minimum of 24 hours.
