my mother brought down her above unit, the graphics card is gone 
it's a raedon HD 4670. I tried reflowing no dice and for a replacement 256MB graphics card it's well over $300! My question is I have found another graphics card (HD 4670) looks the exact same except the color (red vs blue) (1GB vs 256MB) will this work in the Mac?
http://m.ebay.ca/itm/ATI-Mobility-HD-4670-HD4670-1GB-MXM-A-VGA-Card-For-ACER-5935G-5940G-5739G-7735G-/191504336760?_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150519202400%26meid%3Df5a8ebf2c41b4149be1a1ff3af2378f9%26pid%3D100408%26rk%3D4%26rkt%3D20%26sd%3D170601995828&_trksid=p2056116.c100408.m2460
Here is the original (not from this machine)
http://m.ebay.com/itm/Apple-iMac-21...56MB-Late-2009-A1311-/331592686916?nav=SEARCH
it's a raedon HD 4670. I tried reflowing no dice and for a replacement 256MB graphics card it's well over $300! My question is I have found another graphics card (HD 4670) looks the exact same except the color (red vs blue) (1GB vs 256MB) will this work in the Mac?http://m.ebay.ca/itm/ATI-Mobility-HD-4670-HD4670-1GB-MXM-A-VGA-Card-For-ACER-5935G-5940G-5739G-7735G-/191504336760?_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150519202400%26meid%3Df5a8ebf2c41b4149be1a1ff3af2378f9%26pid%3D100408%26rk%3D4%26rkt%3D20%26sd%3D170601995828&_trksid=p2056116.c100408.m2460
Here is the original (not from this machine)
http://m.ebay.com/itm/Apple-iMac-21...56MB-Late-2009-A1311-/331592686916?nav=SEARCH
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