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> Anyone here put tin plated SIMMs into their gold Thinkpad TAM sockets? Are > those stories of corrosion true? Or, does corrosion only takeplace after 7 > or eight years? Gold can't corrode - that's one reason it's worth so much. The tin you see is actually solder (tin+lead) which can, or oxidize. The connections can also get dirty over time, even when both sides are gold flashed (a way to make the coating thinner than plating). I'd say gold on one side is better than no gold at all. I wouldn't worry about the dis-similar metals - I've been plugging tinned chip leads into gold sockets for many many years with no problems... Billy Y..