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SATA 3.0Gb/s vs SATA 6.0Gb/s

Just wanted to ask whether there is a noticeable performance difference while using 6.0 Gb/s HDD instead of a 3.0 Gb/s HDD for gaming or otherwise (boot time, copy time etc.) on a PC if the mobo has got the ports to support 6.0 Gb/s and all other specifications of the 2 HDDs are same?
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  1. Best answer
    There should be no measurable difference because a hard disk's transfer rate is much lower than 3 Gb/s.
  2. The things that would help in your performance is the cache size on the hdd and if the hdd is a sata3 version and you were using the sata3 data cable to connect to the sata3 port , then you would be setup for what ever the hdd is designed to offer in terms of performance. If you have the time and the patience you could easily see for your self by connecting everything in sata2 ( cable ,ports) and running some benchmarks and recording them and then connecting everything in sata3 (cable, ports) and running the same benchmarks. Thats the only way to dertermine with your system what the capabilities are.
  3. There are several benchmarks that prove that the same hard disk connected to a SATA II or a SATA III port basically performs the same. Current hard disks barely saturate a SATA I port.
  4. only SSD reach SATA III speed.
    HDD dont even reach SATA II.
  5. Thanks for the replies, I see myself going for 3.0 Gb/s and saving some bucks then ;)
  6. A drive couldn't max the bandwidth of a Sata 2 interface, selling it with Sata 3 is just to make more money off stupid customers.
  7. Gains, if any, would be miniscule even in benchmarks.

    for subjective improvement, NONE. ZILCH. ZERO.
    save money and get a 3gbps HDD.

    get a 7200rpm HDD with 32/64MB cache.
  8. Best answer selected by primekrieger.
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