I picked up a bunch of blue SATA cables from my work because they will go nicely in my build. But they are cheapies from Dells. Will this matter or is it like HDMI cables where if it works it works.
Not quite, no.
There's 3 standards, SATA1, 2 and 3 so there's core difference. If you use a SATA1 cable on a SATA3 drive and mobo, it will work but you won't be getting full speed.
Likewise, cheaper cables are possibly prone to interference and if you're running longer cables you can run into weird issues like drives disappearing, data transfers timing out, that kind of thing.
Realistically, it's probably not going to be an issue, but 'technically' there are differences.
Cheap or improperly made HDMI cables can have a detrimental effect on the video signal being passed.Really? Surely if the connection is present with no faults it'll do whatever speed after all it's just wire? This sounds similar to the myths that expensive HDMi and coax cables made a difference when in reality you could use cheap 10 meter 3 quid cables with no negative effect.
They are made by FOXCONN. But it was the age I was worried about i.e. SATA 1,2,3.the cheapie dells you quote are likely to be good quality, the last thing dell want is people reporting faults (which they would have to attend and fix)as costs them more in the long run
Akasa Super Slim cables are a lot more flexible than most.i want someone to make them soft and flexible, and not like twin and earth.