Corsair sleeved cables - which do i need?

[Tinkmaster Overspark]

http://www.corsair.com/en-au/professional-series-ax850-ax750-ax650-individually-sleeved-modular-cables-black

These cables here are a set that Corsair sells. in my system i will have two GTX 970 cards in SLI, and i want to connect everything, a Z97 deluxe motherboard, and the PSU will be a corsair one to work with these modular cables (I'm aware that particular set is only those three models in the url though).

Along with a SSD and an internal HDD, what cables do i need so i know if a set is sufficient or if i have to purchase a double of a set (to get enough cables to hook up the second GTX 970 is something i could see happening if the set only sold enough cables for one GPU)

forgive my stupidity on something so basic, the last time i got a computer was five years ago (the joys of being a student back then).

 

[smackers_12]

You dont actually NEED any, but if you want the sleeved ones thats why you buy them. If you do buy them depends what 970 you use, for your requirements one will be fine if you use the asus strix one (One 8 pin) but all the others there will not be enough cables for two but you can always use the stock cables.

 

[Tinkmaster Overspark]

yeah, it's completely optional that i'm getting these. At the moment i have my eye on the gigabyte windforce models as i've seen them beat even the strix model in benchmarks ever so slightly, for cheaper, Along with the AX860 PSU which seems to be enough to power everything and OC the CPU.

EDIT:

http://www.corsair.com/en-au/professional-individually-sleeved-dc-cable-kit-type-3-generation-2-red using this kit here, along with gigabyte GTX 970 which says it uses on the website "(with one 6-pin and one 8-pin external power connectors)". Does that mean i use four of the "6+2" connectors for the GPU setup.

is having two spare "6+2" cables enough for the build? It's quite an expensive cable kit and it needs the 24 pin as well, and i'd rather not have to buy two. But if i need these 6+2 cables for other things and i run out it would be bad

 

[smackers_12]

yeah, it's completely optional that i'm getting these. At the moment i have my eye on the gigabyte windforce models as i've seen them beat even the strix model in benchmarks ever so slightly, for cheaper, Along with the AX860 PSU which seems to be enough to power everything and OC the CPU.

This kit will have cables for one of them, your hdd and your ssd. you can either buy another it or get extenders (not recommended, it increases the resistance) when you get another card