There are very few motherboards which will accept both ECC and non-ECC
memory (and never both at the same time).  Most DDR ram is compatible with
slower speeds.  If your motherboard states a preference for DDR PC-2100, it
will PROBABLY accept DDR PC-2700 and DDR PC-3200, but it is not guaranteed.

On Sat, Mar 21, 2009 at 10:03 PM, Tom Waddell <[log in to unmask]> wrote:

> Looking to upgrade the 256 MB 184 pin DDR RAM in an older desktop MB to
> 1GB. Lots of used ECC memory out there pulled from servers for half the
> price of new non-ECC memory. My question is will ECC work in a desktop MB
> and what are the advantages/disadvanteges of using ECC. Have heard it is
> slower because it checks for lost bits befor processing the data.
>
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-- 
Ron Jobe

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