Inquire about graphics card sapphire hd 7770 Ghz Edition 1GB DDR5

Skilled FreeDom

Reputable
Oct 14, 2015
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The graphics card sapphire hd 7770 Ghz Edition 1GB DDR5
Card containing 2 fan
I've bought used
He asks PSU 450W
When I tried to run on the PSU 300W
I have a problem
The problem is when I put 6bin in the graphics card and the device was trying to run it works for a period of less than a second and completely switches off
When I remove the 6bin of the card in that the computer works without problems
But as you know, you can not operate the graphics card. Without the 6bin

Do you may damage the graphics card because I tried to run it on PUS 300W ;(??