Diffrence between this:
http://www.amazon.com/Sapphire-Version-PCI-Express-Graphics-11227-00-40G/dp/B00HJOXUKC/ref=sr_1_1?ie=UTF8&qid=1403749921&sr=8-1&keywords=Sapphire+Radeon+R9+290+4GB+Tri-X+Video+Card
and
http://www.amazon.com/Sapphire-VAPOR-X-PCI-Express-Graphics-11227-04-40G/dp/B00JJJW4Z2/ref=sr_1_2?ie=UTF8&qid=1403749921&sr=8-2&keywords=Sapphire+Radeon+R9+290+4GB+Tri-X+Video+Card
http://www.amazon.com/Sapphire-Version-PCI-Express-Graphics-11227-00-40G/dp/B00HJOXUKC/ref=sr_1_1?ie=UTF8&qid=1403749921&sr=8-1&keywords=Sapphire+Radeon+R9+290+4GB+Tri-X+Video+Card
and
http://www.amazon.com/Sapphire-VAPOR-X-PCI-Express-Graphics-11227-04-40G/dp/B00JJJW4Z2/ref=sr_1_2?ie=UTF8&qid=1403749921&sr=8-2&keywords=Sapphire+Radeon+R9+290+4GB+Tri-X+Video+Card