Mystery of Disappearing RAM

Posted on 1998-10-25
Last Modified: 2013-12-28
I've just put 64Mb of sdram into my W98/AMD K6 PC in place of 64Mb EDO simms - but MSD and other measurers, inc. the startup display, show only around 16Mb !!!   Any ideas, help.   Dan.
Question by:danM
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Expert Comment

ID: 1646690
If the bios startup mem count goes to 16Mb, my guess is it is a 16Mb DIMM or it is faulty.

Expert Comment

ID: 1646691
You might check the AMD site and verify that your motherboard/BIOS can recognize SDRAM. My P6-200 can only use EDO or FPM....



Author Comment

ID: 1646692
As there are two sdram sockets I assumed that it was reasonable to insert sdram into them.  I also assume that unlike Edo ram, I can insert one only sdram module, and they don't need to be in pairs.  Also the sdram is 100Mhz type.     Dan

Accepted Solution

ivancho earned 50 total points
ID: 1646693
Try to enter and exit and save the bios settings, it should update automatically.

Author Comment

ID: 1646694
I now understand that 100Mhz sdram can not be used in a PC with a 66 Mhz bus, it needs a 440BX chipset.    

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