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DDR ram question? Help


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#1 Badcube

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Posted 25 January 2009 - 04:14 AM

I have DDR slots and I think I can use -

DDR PC3200
&
DDR PC2100


But can I also use something like this -

4GB (4x1GB) Corsair PC2100 Reg/ECC DDR RAM ?

The ECC/Reg part scares me I don't know what that is...would I still be able to use it or not? plz help me thank you :thumbsup:

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#2 dc3

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Posted 25 January 2009 - 05:32 AM

Hi Badcube, and welcome to BleepingComputer.

If we are to help you we will need to know the make and model of your computer, if you can supply this information we will be glad to help you.

Alternately you can go to Crucial and use either their system scanner tool or their memory advisor tool, either will provide you with the number of expansion slots, the maximum amount of RAM for each slot, and the type of modules that will work with your computer.

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#3 Platypus

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Posted 26 January 2009 - 08:30 AM

can I also use something like this -

4GB (4x1GB) Corsair PC2100 Reg/ECC DDR RAM ?

As dc3 says, to be sure we will need details of the board it is to go into.

Generally speaking, memory specified this way is probably intended for use in a server, and most desktop motherboards would not be able to use it.

ECC RAM has extra memory bits available for Error Checking and Correcting - a board which does not need these because it does not do ECC may just ignore the extra bits, but equally may find it confusing and not be able to boot with the ECC memory fitted.

"Reg" indicates registered memory - again designed for servers with large amounts of memory. Each DIMM having a register reduces the load on the memory controller so it can drive a large number of DIMMs, and increases the integrity of data operations, at the expense of speed because an extra cycle is needed to transfer data through the register.

Memory that is both registered and ECC is likely to require a server class motherboard.
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