Macworld Apple has updated its colorful all-in-one desktop with the latest M3 chipsets, bringing the promise of faster performance to the table. But, with most of the components remaining the same as the already powerful M1 iMac, is it really worth spending more to get the latest silicon? We compare the M1 iMac against the M3 iMac to see which one you should buy while the iMac M1 is still available from certain resellers. You may also be wondering if it’s time to update from an Intel-powered iMac. If you’ve been holding out for Apple to update the iMac it is definitely time to buy one now. Rea…