<div>
try moving the 512's to the first slots. &nbsp;so 512,512,512,512,1g,1g... sounds odd but ive run across it before. 
</div>


try moving the 512's to the first slots.  so 512,512,512,512,1g,1g... sounds odd but ive run across it before.

<div>
i advise against populating all ram slots, since you creata a very heavy load on the ram bus<br />
listen to item 10 : <a href="http://www.corsairmemory.com/memory_basics/index.html" rel="ugc">http://www.corsairmemory.com/memory_basics/index.html</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
<br />
it can be your last ram slots are not working properly; you can test by swapping the ram sticks in there 1 at the time (leave only 2 GB installed)
</div>


i advise against populating all ram slots, since you creata a very heavy load on the ram bus
listen to item 10 : http://www.corsairmemory.com/memory_basics/index.html [http://www.corsairmemory.com/memory_basics/index.html]      

it can be your last ram slots are not working properly; you can test by swapping the ram sticks in there 1 at the time (leave only 2 GB installed)

<div>
<div class="content wysiwyg-content">
I have 4GB of RAM in a Precision 670. &nbsp;Aida32 shows 2 sticks of 1GB RAM and 4 of 512MB. &nbsp;But System Information and Computer Management show that the computer has only 3GB of RAM. &nbsp;Setup (F2) also shows 4GB<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;DIMM 1 &nbsp; &nbsp; &nbsp; 1GB &nbsp; &nbsp; ECC &nbsp; &nbsp;Rank 2 &nbsp; &nbsp;Registered &nbsp; X8<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;DIMM 2 &nbsp; &nbsp; &nbsp; 1GB &nbsp; &nbsp; ECC &nbsp; &nbsp;Rank 2 &nbsp; &nbsp;Registered &nbsp; X8<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;DIMM 3 &nbsp; &nbsp; &nbsp; 512MB ECC &nbsp; &nbsp;Rank 1 &nbsp; &nbsp;Registered &nbsp; X8<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;DIMM 4 thru 6 - same as DIMM 3 &nbsp; &nbsp; <br />
Is there any way to make sure that all 4GB of RAM is being utilized? &nbsp;Thanks.
</div>
</div>


I have 4GB of RAM in a Precision 670.  Aida32 shows 2 sticks of 1GB RAM and 4 of 512MB.  But System Information and Computer Management show that the computer has only 3GB of RAM.  Setup (F2) also shows 4GB
             DIMM 1       1GB     ECC    Rank 2    Registered   X8
             DIMM 2       1GB     ECC    Rank 2    Registered   X8
             DIMM 3       512MB ECC    Rank 1    Registered   X8
             DIMM 4 thru 6 - same as DIMM 3     
Is there any way to make sure that all 4GB of RAM is being utilized?  Thanks.

Why does my computer only show 3gb of 4gb installed RAM?

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.