Can I replace/upgrade 4850 graphic card in 2009 iMac
I have a 27" iMac intel late 2009 EMC 2309 with AMD ATI Radeon HD 4850 graphic card. Does anyone know if the card can be upgraded?
iMac Intel 27インチ EMC 2309 (Late 2009, Core 2 Duo 3.06もしくは3.33 GHz) ID iMac10,1, EMC 2374 (Late 2009, Core i5 2.66 GHzもしくは Core i7 2.8 GHz) ID iMac11,1
Yes it can! Though it's as easy as with a regular PC. But iFixIt has a guide here! BUT make sure you get a card that's compatible with the iMac. A generic graphics card for a PC won't work! The best way is to get a used one on eBay or elsewhere taken from a newer Mac, as the guide writer did.
Yes you can replace your graphics card with the late 2009 iMac's Ati 4850 or newer Ati 5750 used on mid 2010 iMacs.
older Ati 4850 has 512MB of Ram and 256Bit Memory Bus GDDR3
newer Ati 5750 has 1GB of Ram and 128Bit Memory Bus GDDR5
It is your choice, but personally i don't prefer downgrade your memory bus speed to increase amount of ram. Bus speed is more important than ram size on older graphics cards.
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