hmn... i think i need to let u understand what am asking u lor... hehe...
DDR Ram got several types... got DDR 266MHz, DDR 333MHz, DDR 400MHz and DDR II 533MHz... the higher the MHz the faster but still depend on ur mother board support until what buses...
maybe u can study from the sticker stick on the RAM to know the MHz of the ram... but from the photo u take, i can't c any sticker there also... maybe the other side...
anyway, hope to know more info about the ram... i'm interested... :)