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Hardware Installation
Frequent Q&A on Memory Usage
Q:
How can I obtain good performance on an overclocked system?
A:
Insert two identical broad bandwidth memories in DIMM 2 and
DIMM 4.
Q:
Why will the system board fail to boot when 3 DIMMs are
used?
A:
The integrated memory controller in AMD's 64-bit Socket 939
series CPU supports dual channel however the controller is not
capable of accurately distinguishing between dual and single
channels resulting to boot up problem. If you have luckily
booted the system, the total memory size detected is from 2
DIMMs only, not 3. Therefore we do not suggest using 3
DIMMs.
Q:
Why won't the system boot when 4 single side DIMMs are
used?
A: Normally, the memory timing is set at 2T but to enhance system
performance, the default memory timing has been fixed at 1T
(Command Per Clock: Enabled). Therefore if you use 4 single side
DIMMs, the load will exceed the limit (DDR 400). Please refer to
the steps below to solve this problem.
1. Set the "DRAM Voltage Control" field (in the Genie BIOS
Setting of the Award BIOS) to "2.8V".
2. Set the memory timing to 2T by selecting Disabled in the
"Command Per Clock" field (in the Genie BIOS Setting of the
Award BIOS).
