i coudlnt resist and bought 2x2Gb Kingstan 667 MHZ DDR2 rams. But these RAMS r realy differnet and slim. i never seen such slim rams. even the seller was surprised when his asisstant got these from backside of the store. i searched KINGSTON website. SKU code is true but i couldnt find any picture of thse. here they r and here the differerence with my twinmos ddr2 ram.