Image courtesy: Apple Inc.
20″ 2.4GHz iMac
RAM: 1GB DDR2
HDD: 250GB 7200RPM SATA
Optical: Slot-load 8x SuperDrive
GPU: ATI Radeon HD 2400 XT 128MB GDDR3
Price: $1200
Options for 20″ 2.4GHz:
RAM: 4GB DDR2
HDD: 500GB SATA
20″ 2.66GHz iMac
RAM: 2GB DDR2
HDD: 320GB 7200RPM SATA
Optical: Slot-load 8x SuperDrive
GPU: ATI Radeon HD 2600 PRO 256MB GDDR3
Price: $1500
Options for 20″ 2.66GHz:
RAM: 4GB DDR2
HDD: 750GB SATA
24″ 2.8GHz [...]

GPU upgradeable? MacGeneration thought so. c|net states that the 24″ iMac uses nVidia’s MXM mobile GPU. That means that it is technically upgradeable. But it doesn’t mean you can upgrade yourself. Apple does it to easily go back and forth from the GeForce 7300 GT to the GeForce 7600 GT for building different configurations. You? [...]