|A 256 meg stick is going to be 32meg x 64 (or 32meg x 72 for ECC). So unless I'm misreading your initial posting or you've made a typo, both sticks are 128.|
Also, I think you can use both sticks in the same system as long as ECC is disabled in cmos/bios setup. At least that's the way it was with the parity check that some older SIMMs used.
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