These ballistix tracer ddr2-1066 2x1gb memory sticks are vintage and harder to come by they have micron d9 overclocker chips and are sought after by retro pc builders also have awsome looking led lights that light up your board when in use these sticks also have epp ( enhanced performance profiles) witch allows older enthusiasts motherboards to automatically overclock it to its full 1066mhz speed these sticks also feature high end pc2-8500 rating running at 1066 mhz these are great if your building a 2007-2009 pc or even if you just want them for a diffrent option there great for gaming this lot comes with x2 memory sticks as pictured in the add and are working both the memory sticks and leds work these sticks were barley eve used i think it was about a week i gad them in and decided to upgrade my whole pc and they were well taken care of and come from a smoke free enviroment