dual core or single core card

[Pharune]

Hello all. I am building this as a liquid cooled rig. I never done one and my last computer had some fairly large GPUs in it and other high end parts and I overheated one so I figured that would be a way to go with this one. So that being said here is a list of main parts:
PCPartPicker part list: http://pcpartpicker.com/p/2SZlg

CPU: AMD FX-9590 4.7GHz 8-Core Processor
Motherboard: Asus Crosshair V Formula-Z ATX AM3+ Motherboard
Memory: G.Skill Trident X Series 16GB (2 x 8GB) DDR3-2400 Memory
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk
Case: Antec Twelve Hundred ATX Full Tower Case
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit)
(Generated by PCPartPicker 2014-02-14 04:14 EST-0500)

and here is the cards I am looking at and would appreciate some thoughts thanks:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130918
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121779
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121839

 

[HEXiT]

the cpu is pointless mate. theres no benefit getting that over the 8350 it uses a lot more power and has no performance advantage especially if you run the 8350 at 4.7...
the 9590 doesnt oc at all well so dont make the mistake of thinking well i can run a 20% oc and get even more over the 8350... they basically both top out at around 5ghz and the 9590 will use a lot more power to do it.

 

[Pharune]

the cpu is pointless mate. theres no benefit getting that over the 8350 it uses a lot more power and has no performance advantage especially if you run the 8350 at 4.7...
the 9590 doesnt oc at all well so dont make the mistake of thinking well i can run a 20% oc and get even more over the 8350... they basically both top out at around 5ghz and the 9590 will use a lot more power to do it.

I already have it. I got it for a great deal awhile back with the motherboard. I am just wondering about the GPUs. But thanks though if i knew that back then I probably would have went that way.