A8S-X and DDR

I know I'll be told to read the manual, I did and it is not explicit, tells
me I got four slots and that's about it. Have two identical (same
manufacturer, etc) 512mb, put 1 in the A1 slot and the other in the B1 slot
(they are both blue color, the other A2 and B2 slots are brown). I this
this is right to take advantage of DDR. Is there anyway to know if DDR is
working?

You did it correctly. And, no, there is no way to confirm.

--
--------
DaveW
"Jr" <> wrote in message
news:. ..
>I know I'll be told to read the manual, I did and it is not explicit, tells
>me I got four slots and that's about it. Have two identical (same
>manufacturer, etc) 512mb, put 1 in the A1 slot and the other in the B1 slot
>(they are both blue color, the other A2 and B2 slots are brown). I this
>this is right to take advantage of DDR. Is there anyway to know if DDR is
>working?

Thanks for your reply, may I ask another question. In the A2 and B2 slots I
put in leftover DDR ram that I had, one is a 512 and the other is a 256 and
they are not the same speed. The computer does recognize that I now have
1.75GB installed and everything is working ok. Does this however negate the
2 sticks I have in A1 and B1 working as dual channel or do they still work
as DDR, while the memory in A2 and B2 is just doing single channel.

"DaveW" <> wrote in message
news. ..
> You did it correctly. And, no, there is no way to confirm.
>
> --
> --------
> DaveW
> "Jr" <> wrote in message
> news:. ..
>>I know I'll be told to read the manual, I did and it is not explicit,
>>tells me I got four slots and that's about it. Have two identical (same
>>manufacturer, etc) 512mb, put 1 in the A1 slot and the other in the B1
>>slot (they are both blue color, the other A2 and B2 slots are brown). I
>>this this is right to take advantage of DDR. Is there anyway to know if
>>DDR is working?
>
>

Jr wrote:
> Thanks for your reply, may I ask another question. In the A2 and B2
> slots I put in leftover DDR ram that I had, one is a 512 and the other
> is a 256 and they are not the same speed. The computer does recognize
> that I now have 1.75GB installed and everything is working ok. Does
> this however negate the 2 sticks I have in A1 and B1 working as dual
> channel or do they still work as DDR, while the memory in A2 and B2 is
> just doing single channel.

You can verify the effects of the various memory configurations, either
by using a Windows utility that has a memory bandwidth tester (Sisoftware
Sandra or Everest), or use a free tool like memtest86+ from memtest.org .
Memtest86+ has a bandwidth indicator in the upper left hand corner
of the screen.

Placing a random collection of DIMMs in a Socket 939 board, results in
"single channel" operation. And the memtest86+ test results should reflect
the slower operating speed.

Two pairs of matched sticks, like 2x512MB + 2x1024MB, placed in the
appropriate sockets, would continue to give you dual channel operation.
Or using just a single matched pair, like 2x512MB in slots of the same
color, should also give you dual channel operation. Testing with
memtest86+ as a boot floppy or as a boot CD, will tell you the mode you
are in, via a higher or lower bandwidth readout. Testing with a single
stick of RAM, will definitely put you in single channel mode, if you
need a "reference" configuration to get a single channel memory bandwidth
number.

A1 & B1 (blue) are a matched pair of dual channel slots.
A2 & B2 (black) are a matched pair of dual channel slots.
According to the manual.

Paul

>
> "DaveW" <> wrote in message
> news. ..
>> You did it correctly. And, no, there is no way to confirm.
>>
>> --
>> --------
>> DaveW
>> "Jr" <> wrote in message
>> news:. ..
>>> I know I'll be told to read the manual, I did and it is not explicit,
>>> tells me I got four slots and that's about it. Have two identical
>>> (same manufacturer, etc) 512mb, put 1 in the A1 slot and the other in
>>> the B1 slot (they are both blue color, the other A2 and B2 slots are
>>> brown). I this this is right to take advantage of DDR. Is there
>>> anyway to know if DDR is working?
>>
>>
>