K8T890 issue - 3x512 = 1gb?
ABIT AX8, K8T890, latest BIOS. 2 sticks of 512mb PC3200. Dual channel/single channel works as it should depending on if I use the right pair of slots. When I add a third 512mb stick it of course goes back to single channel, but doesn't get counted by the BIOS - 3 sticks still shows 1gb at the POST screen. Any combo of two of the 3 work fine in any of the 4 slots, as they should. The weird part is, cpu-z detects all 3 sticks, reads the SPD correctly from all 3 sticks, and shows the total memory as 1536mb, but BIOS and the OS only show 1gb.
Is this a known issue with the K8T890?
Is this a known issue with the K8T890?
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Comments
Do you have a memory remap option in the BIOS? Allows for mapping of memory in/out of the memory space. Could be that's screwing with things.
Alternatively, that motherboard could have a memory bank limit. Three sticks of double-sided DDR is six banks, which some older (or poorly-implemented) chipsets throw a fit over.
Lastly, and most obscurely, does the motherboard <i>demand</i> matched pairs?