Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have to buy a new HD, so I am searching for a new one. I opened my laptop and take a picture of my old one, it says "Serial Ata". In the specifications http://wdc.custhelp.com/app/answers/detail/search/1/a_id/5391# (my HD is WD3200BEVT) it says Sata 3Gb/s.

Does it mean that my HD is SATA II?

Thanks, Oscar

share|improve this question

4 Answers 4

up vote 4 down vote accepted

Yes the transfer speed of SATA II is 3Gb/s. SATA I is 1.5Gb/s and SATA III is 6Gb/s. They are all interchangeable but you will only reach the transfer speeds that your slowest component supports (motherboard or drive).

share|improve this answer

Yes, 3Gb/s SATA equal SATA 2


Longer answer with some background:

Currently there are three SATA standards:

 SATA 1, aka SATA 1.5GB/sec
 SATA 2, aka SATA 3.0GB/sec
 SATA 3, aka SATA 6.0GB/sec

In theory all devices are compatible. A SATA-2 drive on a SATA-1 controller should just work, albeit at a maximum transfer speed of about 130MB/sec. ( SATA-1 speed, and compensating for the overhead in the protocol and the encoding).

A single harddisk is not that fast and SATA-1 is still more than adequate for regular desktop usage.

Most SSDs are a lot faster and will be limited by SATA-1, for those you really want SATA-2 or 3. Another use for faster SATA speeds is with port multipliers and several harddiks on a single SATA link.

But, for normal desktop use: Everything should be interchangeable. A few are not and most of those have jumpers to fall back to SATA-1. (Essentially this means the firmware on the HDD is not up to snuff. It should not be needed).

share|improve this answer
    
Thanks for the "extra" info. :) Even though you said SATA I is still mora adequate for regular desktop usage, I will go with exchanging the HD for a sata II HD to avoid any problems. tks! –  Oscar Aug 10 '12 at 15:33
1  
No reason not to buy SATA-2 or -3. (Find a -1 in the shops might even be hard. And the last HDD I bought was -3 because it was faster and cheaper then then previous -2 model). –  Hennes Aug 10 '12 at 15:35

Sandra lite will tell you. Run the program and under Mainboard, there is disc controller.

share|improve this answer

Download free program called 'speccy' and run it. Under 'storage' it will tell you what SATA you have.

http://www.piriform.com/speccy

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.