When buying a hard disk drive most users are only concerned with the drive's capacity. Should you also care about performance? We compared the performance of ten 500 GB SATA-300 hard disk drive models from Seagate, Samsung, Western Digital and Hitachi. Is there a big performance difference among them? Is it worthwhile to pay a little bit more and get a drive with a bigger buffer? If so, which is the fastest 500 GB in the market? Check it out!