just replaced my 250gb sata drive in my acer t650 desktop with one. boots about 50% faster. apps, like firefox, seem to load & run faster too.
originally ordered a 320gb version, but they were out of stock & i was told that seagates plant got flooded, so no more deliveries till around january. i had just seen the news over the weekend about the floods in thailand, & SE Asia, so i gather that's what they meant. my supplier actually had the 500gb in stock, so i had them send it instead. so far so good. if you decide to get one, be quick before stocks go.
interesting tests on seagate's site. seems drive is equivalent to a velociraptor drive & is much faster than a 10000rpm or 7200 rpm equivalent conventional hdd, but slower than a real ssd. seagate uses a 4gb 'adaptive memory' chip to form a read cache that learns from your useage. it also has a more std. but larger than normal 32mb r/w cache.
the system rating for my old hdd was 5.5, new hybrid is 5.9.
interesting video on it HERE