You should be able to figure out the SATA speed supported by your chip with:
- Code: Select all
dmesg | grep "SATA mode"
On my machine this returns the following (note the bit I've highlighted in red):
[ 0.436264] ahci 0000:00:1f.2: >AHCI 0001.0300 32 slots 6 ports 6 Gbps 0x3f impl SATA mode
Common speeds are 1.5 Gbps for SATA-150 aka SATA version 1, 3 Gbps for SATA-300 aka SATA version 2 and 6 Gbps for SATA-600 aka SATA version 3. Confusing, so this may help: http://en.wikipedia.org/wiki/Serial_ATA#Revisions
Now for the important bit; SATA versions are upwards and downwards compatible. So a SATA 3 SSD will work fine on a SATA 1 computer, though at the lower speed. And a SATA 1 SSD will work fine on a SATA 3 computer, though still at the lower speed. These days I think most devices are SATA 3 with some SATA 2, but SATA 1 is mostly gone if you are buying new.
So for buying advice I'd first set a budget, then see what you can get for that. Technology is sure to continue to advance and bring prices down of older tech, so I wouldn't recommend spending extra money now to get a SATA 3 if you computer doesn't support that, with the idea that on your next computer you'll use the higher speed of the SATA 3 SSD.
A good resource for reviews; http://www.storagereview.com/