http://www.eurogamer.net/articles/digitalfoundry-hardware-test-playstation-4
To clarify, idle in the title means at the main menu with no games in, not standby (which I imagine would be ~1-2W or less without a background download)
(I advise you not freak out over the decibels, as unlike other tests for GPUs and such this does not seem to be isolated, hence a lot of background room noise. In use, by all accounts, it's quieter than the PS3 in any incarnation)
Ars has slightly different numbers
http://arstechnica.com/gaming/2013/11/playstation-4-hardware-review-off-to-a-mixed-start/
The reality is that Sony has done a pretty good job here. We'll get to the metrics in a moment, but first impressions are certainly reassuring. On start-up, the hardware is exceptionally quiet, but as you progress into gameplay, volume and heat does start to increase. PS4 also draws a fair amount of juice too - 80W at idle on the front-end menus (the "PlayStation Dynamic Menu" to give it its proper name), 95W based on in-game video playback, and around 110-120W during gameplay - that's about 10-20W more than the first release of the "Slim" PlayStation 3. Curiously though, bringing up the menu system while in-game sees another leap in power draw - up to the maximum of 140W.
To clarify, idle in the title means at the main menu with no games in, not standby (which I imagine would be ~1-2W or less without a background download)
(I advise you not freak out over the decibels, as unlike other tests for GPUs and such this does not seem to be isolated, hence a lot of background room noise. In use, by all accounts, it's quieter than the PS3 in any incarnation)
Ars has slightly different numbers
http://arstechnica.com/gaming/2013/11/playstation-4-hardware-review-off-to-a-mixed-start/