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March 29, 2008, 2:32 am
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Intel chip. I have Crucial Baliztics RAM:Crucial Ballistix Tracer 2GB
(2 x 1GB ) PC2-8500 1066MHz 240-pin DDR2 Memory w/ LED Lights
The operating system is Vista Business Service Pack 1
When I check the bois screens I see a line that says under the
PC Health screen DDR Voltage and the note is fail in red. There
appears to be no way to work with this entry.
Can someone aid me in figuring out what is wrong and then how to fix
the problem? If you need more info please request in responding to
Re: BIO message problem
Your motherboard has two kinds of memory slots. It has both
DDR2 slots and DDR3 slots.
DDR3 memory runs at 1.5V.
DDR2 memory (the kind you bought) runs at 1.8V. That is the "nominal" voltage.
The PC Health monitor, is probably not aware it should
be checking for 1.5V or for 1.8V. It might not know
what a "normal" voltage is.
What voltage value is showing in the PC Health monitor
(the one shown in red) ?
Is this your memory ?
2GB kit (1GBx2), Ballistix Tracer 240-pin DIMM (with LEDs), DDR2 PC2-8500 memory
BL2KIT12864AL1065 is rated for PC2-8500 operation at 2.2V. That means,
the memory needs more voltage than the normal 1.8V amount, if you
expect to run at elevated speeds. If, on the other hand, the motherboard
is running at some lower rate, like DDR2-800, it might not need
the full 2.2V value, but may work with values of voltage
somewhere between 1.8V and 2.2V. The more voltage, generally,
the higher the memory bus speed that the memory will support.
Using more than 2.2V is not recommended, as the specified value
That is pretty fancy memory.
Generally, what you do with a memory like that, is test for stability
with memtest86+ (boot floppy or CD) and with something like
Prime95 (Windows). You adjust the voltage in the BIOS, for error
free operation, and only use as much voltage as is needed to
For example, I own a previous generation of RAM, with a nominal
2.5V operating voltage, and I run it at 2.7V. It is stable at
higher than the rated operating frequency, and I've been
running it that way daily, for more than two years.
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