If anyone here is a tech expert; should I get a Single 8GB NVIDIA GTX 980M [$496 Increase from a Single 4GB NIVIDIA GTX 860M] or Dual 8GB NVIDIA GTX 980M [$720 Increase from the single]. I have researched the effects of dual GPUs in this article and to me, it seems that it will cause more trouble than the single [assembling it would be no trouble, just the other problems mentioned in the post]. Your thoughts?