Sony Santa Monica's head of technology Christer Ericson has said God of War III won't require an HDD install.
That's despite news that the game will fill up to over 35Gb on a Blu-ray, with just over 40Gb for the European version thanks to localisation.
God of War 3 does NOT do a HD install. The 5MB listed on box back is for save game only.
GoW III is due out on March 16 in the US, with an as yet unconfirmed date of March 19 in the UK.