But skipping all that tech talk, did you re-do the heatsink? I find that just like the link I'll supply it's not something we can ignore. That and fans or case air flow. Leave the cover off for now.
One last thing. Furmark is to stress out a card. So it's not a great thing except for what it shows and then it could freak out folk that are just beginning to work PCs.
Here's what I'd do next after the cover is left off and fans checked. -> http://www.tomshardware.com/reviews/radeon-r9-290x-thermal-paste-efficiency,3678.html
Bob
Hey. I really need help, like bad. My graphics card is freaking out lately and doesn't work like it used to. GPU one's power usage is incredibly low (24%) and GPU two's is 300-400%. 400 being the max, according to various programs I downloaded. I really need some help, please. Here's a picture http://puu.sh/dKUfu/4f61d49fd2.png

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