When you say 'matched pairs' do you mean matched type i.e. they must both be 533Mhz or do you mean matched capacity i.e. they must both be 2GB?
Cos I have happily fitted a mis-match of the latter into 3 Intel iMacs and they just lapped them up
have to admit, it's not as clear cut as i thought...
from apple
The iMac (Mid 2006) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots.
Note: If you upgrade the memory in your iMac (Mid 2006), make sure you have matching size SO-DIMMs in each slot for best graphics performance.
The iMac (17-inch Late 2006 CD) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots. All other models of iMac (Late 2006) ship from the factory with at least 1 GB of DDR2 SDRAM, in two 512 MB DIMMs; one in each of the memory slots.
does that mean you can stick mis matched sticks in an 07?
from Crucial:
"Q: Do I have to install matching pairs?
A: No.
No, you can install modules one at a time, and you can mix different densities of modules in your computer. But if your computer supports dual-channel memory configurations, you should install in identical pairs (preferably in kits) for optimal performance."
i think late macs do support dual memory.
i know they only support 3GB* as well, but i've never heard of anyone selling 3GB kits.
*i seem to recall that limit going up to 4GB on some models very recently. might have imagined it though.