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1.3
Central Processing Unit (CPU)
The motherboard comes with an onboard Intel
and a specially designed CPU heatsink.
J1800M-A/J1900M-A CPU
J1900M-A with Intel SOC J1900. J1800M-A with Intel SOC J1800.
1.4
System memory
1.4.1
Overview
This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
J1800M-A/J1900M-A 240-pin DDR3 DIMM sockets
1.4.2
Memory configurations
You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM
sockets.
•
•
1-4
J1800M-A
J1900M-A
Intel SOC
DIMM_A1
DIMM_B1
J1800M-A
J1900M-A
You may install varying memory sizes in Channel A and Channel B. The system
maps the total size of the lower-sized channel for the dual-channel configuration. Any
excess memory from the higher-sized channel is then mapped for single-channel
operation.
Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.
Celeron™ Quad Core / Dual Core Processor
®
Attention: If only one
DDR3/-L memory module is
to be installed, be sure to
install it in the DIMM_A1.
Channel
Sockets
Channel A
DIMM_A1
Channel B
DIMM_B1
Chapter 1: Product introduction
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