RX580 connection

Yes, if you have an 8-pin connector on the GPU, it needs two 6-pin connections from the Mac. Otherwise it might be OK under light loads, but it won't be any time it's working hard.

 

https://item.taobao.com/item.htm?spm=a1z09.2.0.0.48ba563am9Ydpq&id=546828298725&_u=dl79p6s091c

This one you need.

 

Welcome, because i want to get one RX 580 too, but cannot found in my city... so poor. where did you get this graphic card ?

 

Graphic card very high price this moment... in the world....

 

I recently found some in stock on Newegg ordered and delivered. It was out of stock soon after that. $350USD. flee-bay is selling them for many times higher (used mining cards).

 

Which brand you order ?

 

It was the Sapphire Pulse 8GB

 

Here you go, this is the perfect cable. Worldwide shipping:
16AWG Dual Mini 6pin to 8Pin PCI-e For Mac Pro Video Card Power Cable GTX1080

 

wrong reply.

 

I think you post in the wrong place. Here is not the PM

Anyway, cable combination is not an issue, it's not necessary to use a "single cable". I am also using cables combination

dual mini 6pin -> single 6 -> dual 6+2

No issue at all.

 

thanks.