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Asked
Change Graphic Cards on this Mac?
Hello!
can i change my Graphic Card to ATI RADEON HD 4850 GDDR3?
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Jeff DeVaun
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mayer
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Charlie
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The answer is a little more complicated than the earlier answers here might lead you to believe.
It depends on which model of machine you have.
If you have the 2.66GHz machine 24", then I think the graphics chipset is part of the logic board. It also shares its video memory with main RAM.
If you have the 2.93GHz or 3.06GHz 24" machine than your machine had the option of three different video cards from the factory.
24-inch model with 2.93GHz processor, one of the following:
- NVIDIA GeForce GT 120 graphics processor with 256MB of GDDR3 memory
- NVIDIA GeForce GT 130 graphics processor with 512MB of GDDR3 memory
- ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory
24-inch model with 3.06GHz processor, one of the following:
- NVIDIA GeForce GT 130 graphics processor with 512MB of GDDR3 memory
- ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory
These are all separate cards, MXM cards, with separate video memory. They are essentially notebook video cards.
Finding a replacement, or upgrade card, is difficult as they are usually only available from Apple. eBay does have some and I found one on eBay. They are a chore to fit though.
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Charlie
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Hi ihorkor,
I found this one on eBay, just now, searching for NVIDIA GeForce GT130 for the 2009 iMac 24" (the subject of this particular page on ifixit:
http://cgi.ebay.com.au/24-iMac-Early-200...
I think the following card better suits your 2008 24" though:
http://cgi.ebay.com.au/iMac-24-inch-Earl...
Cheers,
Charlie @t ewhizz dot net
To stop replacement card getting damaged in the future, you should also upgrade to Snow Leopard (it appears 10.5.8 can cause overheating). I would also recommend installing SMCfan control and boosting the speed of the CPU fans (which also cool the graphics card) by 20%. Don't boost them too much, otherwise they'll be noisy, and possibly wear out quicker and then be permanently noisy! Cheers Charlie
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oliver
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Hi,
just to get sure, I have a iMac Intel 24" EMC 2267, 2,66GHz, the Graphics Info says "NVIDIA GeForce 9400M" - but as I understood the recend answers, "graphics chipset is part of the logic board" - so I don't have any chance to upgrade the Graphiccard?
Just theoretically: could I change the Logic Board?
Concerning the RAM: Max. Amount of RAM is indicated "4GB" - this doesn't have anything to do with the OS, right? So for my understanding I also cannot upgrade to more RAM?
more detailed info to my iMac here: http://dl.dropbox.com/u/7251390/Bildschi...
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thx in advance!
Yes you could. It can be a lot of work (almost every screw needs to be removed to achieve that). Getting a logic board to suit your machine could prove difficult. I would look for a machine that is broken in other ways (i.e. the screen is damaged or other faults, where the logic board is not affected) and use parts from that. Though going down this route would double your work (taking apart the donor machine etc….) Better still, just sell your machine and buy the machine you are after. Overall a much cheaper proposition, and will save you several hours aswell.
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ihorkor
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Charlie,
Obviously you know what's up!
My Video card just fried on my 2008 Imac 24" 3.06 GHz, do you know where I can get a replacement? I've been googling for it and can't find one, not even on Ebay. There's so many conflicting theories about it being connected to the Logicboard but you're saying otherwise, did you change one up? Did it work for you?