SATA 3Gb/s vs 6gb/s cable - any performance differences for modern SSDs?

In the past a SATA 3Gb/s cable seemed to be just as fast as a 6gb/s cable. Essentially zero performance difference. I am wondering if that is still the case with more modern SSDs? Going to be getting a Crucial MX200 500GB today or tomorrow:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148949&cm_re=mx_200-_-20-148-949-_-Product

My motherboard:
http://us.msi.com/product/mb/Z87-G43.html#hero-overview

All the SATA slots are 6Gb/s, but I only have a single 6Gb/s cable. Rest are the older red 3Gb/s. Is there any reason to bother getting another SATA 6Gb/s cable for the new MX200? All of the benchmarks I found were with older SSD models circa 2013. Doubt much has changed since then, but I thought I would ask anyways.

I suppose to SATA is hitting its limits regardless and M.2 is the future. Sadly, this motherboard didn't have M.2.

I have not noticed a difference.

there are different cables?

SATA only used one cable spec though 6G, and uses a new cable for 12G.

If you notice a differences, your cable didn't meet specs to start with, and if you look at the drive/hba stats (smart info will tell you too), it will say how many errors you had on the cable, so you know it is the problem.

Even if the cables all work, their quality does make a difference as many are made of aluminum and they break easily or the connector will come off and such. Also copper cables are better than aluminum. The connectors coming lose are the major cause of errors. Also better cables handle larger distances. Now what is better is not defined by cost.. Just like HDMI cables.. But if you are using a 20M HDMI cable, buying a good quality cable would mean it would work while even shorter cables from others wont. But for 1-2M cables, any of them will work.. Another thing I noticed is that, cheaper cables have problems duing power spikes.. The cables are not well shielded.. although they work fine other wise.. I just hate it when ever someone in the next apartment turns on their old tube light my monitor starts blinking.