Linux – How to find SATA controller version on Ubuntu laptop. Do I have SATA 1, 2, or 3? I, II, or III

linuxsatassdUbuntu

I'm running Ubuntu on a laptop and am shopping to upgrade to an SSD.

Based on the specs for this drive for example, it seems like I should figure out what version of SATA my computer will support before I buy.

I don't want so shell out the big bucks for a really fast drive if my SATA controller will be the bottleneck anyway. Does this make sense?

Newegg presents this as SATA 2 (SATA II) running at 3Gbps and SATA 3 (SATA III) running at 6 Gbps.

What tools can I use in Ubuntu to determine if my computer will support SATA 3?

Best Answer

Try dmesg | grep SATA, this is a little faster than lspci as it will print out the kernel buffer logs from boot/after boot with the SATA speeds right there. You should see something like this: 

[1.236431] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 3 Gbps 0x33 impl SATA mode

Again this is only your controller so it's not guaranteed. And it'll show your current hd

[1.577525] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)

This is your drive's ultimate connection, i.e. SATA revision the drive is running at.

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