Questions about power supply cables for 980ti and HDD rack

[Melon_seed]

Hello,

I have decided to get myself this power supply
http://www.pcgameware.co.uk/reviews/power-supplies/super-flower-leadex-platinum-750w-power-supply-review/

I noticed that the single PCIe cable have two 6+2 pin connector and super flower supplied it with 2 cables. I am planning on getting this next.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814500378

So the question, is it safe for me to use single PCIe cable or do I need to use both cables to power that graphic card? I usually don't overclock my card but I may want to try it out once in a while.

I also have this HDD rack
http://www.amazon.co.uk/ORICO-6203SS-Black-3-5-inch-Mobile/dp/B00GD99JD6

As you can see it can house 3 HDDs but it uses two sata power cables. I am planning to use 2 extension cables for this but unsure whether to use sata to molex extension cables or sata to sata extension cables. I mean, which can provide enough power for the 3 HDD safely?

Last question, I would want to have custom cables to replace those ribbon cables supplied for the sake of uniformity, something like a single cable with 3 sata connector and another cable with 4 molex connector. Will the PSU is able to handle those especially for those molex?

Thanks in advance.

 

[Dark Lord of Tech]

Using a single cable is fine.

Last question, I would want to have custom cables to replace those ribbon cables supplied for the sake of uniformity, something like a single cable with 3 sata connector and another cable with 4 molex connector. Will the PSU is able to handle those especially for those molex

You need to use the cables that come with the PSU

 

[Jackmanj7]

using a single cable is fine, if you want extention cables always use a good reputable company to buy them from (https://cablemod.com/)
as for the psu, i would not touch that psu with a 100 foot barge pole, IMO i would only buy psu's from a company that i know make good psu's (i haven't actualy herd of flower power) and i would only buy corsair, evga, be quiet or thermaltake psu's

 

[Zerk2012]

^^^^ I don't think any of those brands actually make a power supply at all.