Answer to: How can I upgrade my early 2008 24" iMac?My answers are quite late, but are here for posterity. I purchased the RAM at https://www.macsales.com. Note that only 2x4 is recommended due to stability concerns. I think this is the correct graphics card replacement guide. iMac Intel 24" EMC 2267 Graphics Card Replacement The third replacement grahics card is still working.
Answer to: How can I upgrade my early 2008 24" iMac?I successfully installed a 3.06Ghz SLGEA E8435 in my early 2008 24" iMac, which is listed as the processor for the March 2009 iMac. The specifications are identical, excepting that the TDP (Thermal Design Power) is listed as 11 watts lower than the 3.06Ghz SLAQD E8435 (44W rather than 55W). See http://en.wikipedia.org/wiki/Thermal_des... for specifications. The presumed benefit of the SLGEA version is lower heat generation. Also, the cost was about half that of the SLAQD version, perhaps due to less demand. No problems with heat or operation. I also installed a 2TB Toshiba disc drive, a 960GB Crucial SSD (replaced the optical drive per directions on this site), upgraded to the GeForce 8800 GS video card, and am using a second monitor (24 inch Apple Cinema display connected using a Kanex adapter). I combined the disc drive and SSD into a fusion drive, which works fairly well. The graphics card, though it is fast when working, increases the heat, and has been subject to failure (2 cards have failed so far). The...