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I've got a laptop Asus K50IN that, according to the specification, uses NVIDIA MCP75L chipset. How do I determine which revision of the SATA interface is supported by my laptop?

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For most part Sata is forward and backward compatible so that shouldn't be a problem – Journeyman Geek Sep 21 '11 at 10:47
I think it's forward compatible in terms of interface, not in terms of supported bandwidth. So, SATA 2.0 HDD will work fine on SATA 1.0 controller, but the bandwidth will be limited by controller. Is that correct? – Eldar Sep 21 '11 at 11:26
@Eldar: Yes, but you won't find an HDD that will suffer from this limit. The maximum transfer rate for SATA 1 is 1.5 Gbit/s -> ~187MB/sec. Only SSDs reach this limit at the moment. – Robert Sep 21 '11 at 11:56
@Robert: I want to check the SATA revision level exactly because I'm choosing SSD for my laptop and want to see if I would gain in performance with SATA 2 SSD. – Eldar Sep 21 '11 at 12:57
@Eldar: If you are worrying about speed you should consider buying a new notebook. An old Asus K50IN will limit the speed you get not only by it's SATA port but also by it's processor. – Robert Sep 21 '11 at 13:27
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OK, here is what I've done:

In CPUZ, I've found that my motherboard uses nForce 730i southbridge chipset. Checked Wikipedia, seems that it supports SATA 3Gbit/s. Also, according to the same page, it seems that latest NVidia chipset without 3Gbit/s support was released in 2006, so it should be pretty safe to assume that reasonably modern motherboard with NVidia chipset comes with SATA-II.

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