Changed graphics card, now imac turning off when playing HQ games
I changed the graphics card in my late 2009 iMac to the 6970m 2gb card.
It all works fine until I start playing a game on steam. This is a very high-quality game and I would imagine that it would take up a lot of power.
The problem I have is that when in-game, the iMac will turn off after about 2 minutes of gameplay. This will keep happening every time I try to play the game.
Any help would be greatly appreciated.
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