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System Information not reporting memory upgrade!

I have a 1.6GHZ sempron (AMD) processor on a MSI  k8mm-ILSR board. The FSB of the board is 200mhz with a BIOs feature that will set it up to 280mhz. The Bios also allows a selection for DDR400 memory that should run on this system even though the FSB is only 200mhz. Recently I put a 1.Gig stick of DDR in the vacant slot next to the 256meg of DDR400 that was already there. System info only recognized the 256. I took the 256 out and left the 1gig. System started and system info reported 512meg for the 1gig stick. I exchanged the 1gig stick for (2) 512meg sticks, put them in and system info reported only 512meg. Taskmanager reports the same as system info in every case above. My operating system is MS W2k advanced server with service pak 4.1. I have SQL server on the box also. The new (2) 512meg sticks are a different chipset than the 1gig. If anyone can help...I am listening closely, Thanks.
 
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fbethea
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fbethea
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CallandorCommented:
That sounds like your motherboard will not recognize different density RAM chips.  Check the memory configurator on www.crucial.com as to what memory modules your motherboard will accept.
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David523Commented:
I checked the details of this board at:

http://www.directron.com/k8mmilsr.html

and reflects two slots with a maximum memory of 2GB.  Recommended RAM is at:

http://www.msicomputer.com/msiforms/k8tneo_ddr400_recommended.asp

and the only recommended RAM goes up to 512MB.  As mentioned above by Callandor, Crucial.com is a good place to check on compatible RAM as in Kinston.com.   Might want to consider a BIOS update as a possible source of this issue at:

http://www.msicomputer.com/support/bios_result.asp

Hope this Helps!!!
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David523Commented:
... RAM as is Kingston.com. - to check on RAM
Gosh I missed typed that above.  :-)

Hope this Helps!!!
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fbetheaAuthor Commented:
The new 512 (2) sticks are Elixer XXX-8C1G  And MSI Test report for the board OK'd Elixer xxx-8B3G  in both slots. I change the voltage in the BIOS to 2.6 volts but no matter what I put in over 256megs Displays as only half of its true size. The 256meg DDR work fine and report true , but anything above that reports only half. MSI labels this board as being a DDR400 board that will take everything up to and including the DDR400 to 2 gigs max. The BIOs on this particular board does not appear to be flashable either. Maybe I got an early board with a bug?
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CallandorCommented:
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garycaseCommented:
The one piece of information that memory manufacturers don't, for some reason, post about their memory is whether it's single rank or dual rank (single-sided or double-sided).   And MANY boards cannot accept both -- the symptom when you have the wrong kind is you only see 1/2 of the memory.   I'd say there's little doubt this is your issue.

You note that MSI says "Elixer xxx-8B3G" is ok, but you have "Elixer xxx-8C1G" => these are NOT the same.   You simply need to get compatible modules.   The best way to ensure this is, as noted above, buy the exact memory recommended by the selectors at Crucial (my favorite), Kingston, or www.4allmemory.com (a good lower-priced site).

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garycaseCommented:
For example, here are modules that will work with your board, including some 1GB DDR400 modules:
http://www.4allmemory.com/index.cfm?fuseaction=search.memorySearch&model_id=46164&model=K8MM-ILSR%20(MS-6741-030)

By the way, with regard to your comment that the FSB is "only 200MHz" ==> that's normal.  Remember this is DDR memory (DDR = double data-rate; which operates at twice the clock frequency).   So 200MHz FSB => 400MHz when doubled :-)
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fbetheaAuthor Commented:
Thanks Gary good save.
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