Chosen Solution
I just acquired one of these for really cheap, I was wondering if it were possible to swap in a gpu from a newer iMac, like a Radeon 4850 or something along those lines.
Here’s the previous answer on how and what to upgrade the GPU with: Apple P/N: 661-4663 MXM III, M76XT+/256MB GDDR3 or 661-4664 MXM III, G92GT+/512MB GDDR3 (CTO) Can the graphics card of the 24" iMac be upgraded? Your processor is a ZIF socket and can be upgraded to a 3.06 GHz You have a 3 Gb/s BUS so your hard drive can be upgraded. Consider a SSD drive. “3.06Ghz SLAQD E8435 Intel Core 2 Duo CPU Processor”
in iMac all is soldered. You need to get a new motherboard -totally.
