Upgrade iMac 27" late 2009 video card?

Did your new GPU card die after two years? If so then it has to be some other hardware problems such as logic board. Or as simple as temperature problems.

this is exactly what I replaced my 4850 with in iMac 2009, the 6770m. Works great, similar performance.

Have you found a source for the 6970?

Thanks for the links, appreciated. When the time comes I want to avoid eBay.

To get help for your specific problem you might want to start your own thread instead of burying you question wayyyyy back on page 15 of this one!

thanks for the advise... was trying to do that, but could not find how just yet:/

For some of you are seeking for a hd6970m 2 gb, i have one left here.

I live in europe, but can send it worldwide

send me a private message for further details