the 17 incher with 1.8 GHz and up:
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17-inch widescreen LCD
1.8GHz PowerPC G5
512K L2 cache
600MHz frontside bus
256MB DDR400 SDRAM
NVIDIA GeForce FX 5200 Ultra
64MB DDR video memory
80GB Serial ATA hard drive
Slot-load SuperDrive
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and oh yeah..... just go to
apple's website and look. Its printed all over the iMac's page.