Kindly request advice about Hardware

[vboyz]

Hello All,

I would like to buy a new machine to run the oclHashcat. I kindly request you all to advice me about the hardware selection .

1. Gainward GeForce® GTX 980 4GB (http://www.gainward.com/main/vgapro.php?id=952&lang=en)

2. Gainward GeForce® GTX 970 4GB (http://www.gainward.com/main/vgapro.php?id=954&lang=en)

Does these two models got the reference design ?

Can I expect these models to have the following performance results ?

http://golubev.com/gpuest.htm

GeForce GTX 970 1664 1178 1960.19+ 8067M 2579M 49128 1226964 149889 4d 11h $329 7.84
GeForce GTX 980 2048 1216 2490.37+ 10248M 3277M 62415 1558822 190430 3d 12h $549 5.97

Is there any specific motherboard, memory, processor, HDD model should be considered for the optimum performance of oclHashcat along with any of these GPU ? Does the other components got any significant role in the oclHsahtcat performance ?. Is there can be any performance bottle neck ?

Also can I use two Gainward GeForce® GTX 980 4GB or two Gainward GeForce® GTX 970 4GB in a same machine ?

Thank you very much for your advice and help,

Regard's

vBoyz