Is there much of a difference between 1.5 and 3.0 gbps SATA data cable?

I wanted to buy a sata data cable. But is it much better to get a 3.0 gbps sata data cable?if so, what is the difference? Thank you!

YES! To point out the obvious, the 3.0 is twice as fast as the 1.5. 3 Gigabytes Per Second (gbps) that's a lot of information. If you have the resources, need, and choice you should go with the 3g.