The performance of this hardisk is very good.the transferring speed that I got is 55mb per second.this hardisk compatible with my ddr1 or ddr2 without lagging.I advise them who do no buy this product is this product is very useful for them who is shaukeens of collection.this is also have vibrate when it is connected to pc or a laptop and mobile.Lastly I want to say that This is osm