The previous generations of iMacs (likely current, too) can support 24 and 32GB of memory, although price is quite high. However, prices are already beginning to drop (down $100 for 16GB (2x8GB)/24GB (2x8GB + 2x4GB) and $200 for 32GB) in two months. Still, you'd see more benefits buying a second high-end iMac than buying these upgrades (priced at ~$3K).
You're going to spend ~$600 to $800 on 24 to 32GB of Mac Pro memory, so prices will remain higher there across the board, compared to the iMac memory.
Who knows how affordable prices of RAM become in the future? When the late-July 2010 iMacs were released, it was about $550 to upgrade to 16GB, now it is more than 60% cheaper at ~$200. Apple wanted double that (and 3-4 times that currently) for this upgrade.
What happens when 16GB RAM modules are released and begin to become "affordable" in 2-5 years? Will the iMacs support 64GB of RAM?
You're going to spend ~$600 to $800 on 24 to 32GB of Mac Pro memory, so prices will remain higher there across the board, compared to the iMac memory.
Who knows how affordable prices of RAM become in the future? When the late-July 2010 iMacs were released, it was about $550 to upgrade to 16GB, now it is more than 60% cheaper at ~$200. Apple wanted double that (and 3-4 times that currently) for this upgrade.
What happens when 16GB RAM modules are released and begin to become "affordable" in 2-5 years? Will the iMacs support 64GB of RAM?