One GPU of a 5 GPU rig gets too hot.

[Majidak]

Hi,

I have a mining rig with 5x Sapphire Dual-X R9 280X. They are all the same model and all of them have the same air flow, They are not in a case, but in an open air frame. One of them gets too hot. I changed the place of it, changed the motherboard slot, changed its riser, its power cables, the problem still exists. I think the GPU itself has a problem. All of them has the same voltage. Is something wrong with its cooling system? How can i fix that?

Here you can see an image of the rig. I'm talking about the second one from left :
http://s27.postimg.org/nreb6552r/fgdfg.jpg

PSU: 2x 850W Corsair
Motherboard: MSI Z77a-GD80
CPU: Celeron 1620
Ram: Kingston 4GB
OS: Ubuntu 14.04

 

[gamerguy319]

no problem, its a pleasure helping. just make shure when you do it to be careful. i dont know about you but id be furious if i lost a gpu as expensive as that one

 

[RobCrezz]

Its really easy to do, just make sure you dont loose any of the screws. When you want to remove the cooler, try twisting it a bit first to break the seal of the paste before pulling it apart, some pastes they use are very strong.