This is a mainboard problem, not ram... I wanted to know which chips are those T2D648PT-6, because even if i leave 2 gb of ram (the new sticks only) the system doesn't boot @833mhz ram... I believe they are PROMOS (which suck...

), because of the T2D648
PT-6, where the others had a T2D648
MT-6 (which is for MICRON)