6-8 pin PCI-E adapters, antec ea-500 psu with gtx a 970

Bradley_

Honorable
Jan 14, 2014
24
0
10,510
So the gtx 970 recommends a 500w psu (which I have), and a requires 1x 6pin + 1x 8pin pci-e power connector.

My antec ea-500 psu only has 2x 6pin pci-e connectors (it also has an extra 4 pin connector (no idea what it's for, it doesn't have the pci-e label on it like the 2x 6pins have labeled on them; I've never used it).

First question, the cards all come with an 6-8 pin adapter cable, can I use it with one of my 6pin's to plug into the 8pin? or does that only down-convert an existing 8pin power cable to a 6pin slot?

Is this extra 4pin power connector I have able to incorporate into this to somehow help with some sort of adapter?

Otherwise, would it be possible in my case to use a sata 15 pin to 6 pin adapter along with a x2 6 pin to 8 pin adapter to plug in and properly power a gtx 970?
 

Bradley_

Honorable
Jan 14, 2014
24
0
10,510

the 4 pin is very similar looking to my 2x 6pin pci-e connectors, same pin size, just 4 not 6.
 

Bradley_

Honorable
Jan 14, 2014
24
0
10,510
Some ppl have told me the adapter that comes with the card won't work in my situation. =/

I've been leaning now more towards a gtx 980, the 970 EVGA posted above in the 980 version also only requires 2x 6pin pci-e connectors with a 500w min. recommendation. Since the EVGA only requires 2x 6pins, does this mean it will have a possible disadvantage with higher voltage overclocking capabilities? It seems like all the other makes of the 980 (asus/msi/etc) with 1x 6pin and 1x 8pin may have an upper hand allowing more room to power it for higher possible overclocking... yes? no?

I'd rather go with the Asus strix 980 since it comes with a backplate. Will the Asus strix (6pin+8pin plugs) require more power than the EVGA 6x + 6x at stock or mild overclock? Or are they both the same, with asus just allowing more flexibility there with the extra 2 pins over EVGA?
Some people have told me I can just plug my second 6pin into the 8pin slot of the Asus strix and it will work fine as long as I don't overclock too high, others say it won't.