Wireless Desktop Card Wattage?

[PandaBearz]

I've looked on the internet for almost an hour now, with no luck. I have a "Belkin Wireless A/G Desktop Network Card", but I'm building my new computer this week and didn't want to get a new wireless card so I figured I'd use this one.. however, I'm a big fanatic about conserving electricity so I went with the most low power, strong system I could find.. I ended up going with:

AMD Phenom II X6 1090T @ 3.3GHz (one power guzzler)
HD Radeon 5870
Asus Gigabyte (dunno model)
1TB Low Power HDD
DVD/Blu-Ray
6GB DDR3 @ 1600 Corsair

Anyways, I calculated the power management and it came to roughly 400W-440W max.. so I bought a 460W power supply. I'm almost positive that a wireless card doesn't take more than 10W of power (and that's giving it a ton of room!) But, from personal experience, how much does it take? Please help; desktop full size card, not minicard.

EDIT: I've seen a few different brand high-end desktop network card made in 2009-2010 that took 4.3-5W of power.. but this card was made back in 2005-2006 but I'd still imagine that there's no way it could go over 10W? So, should I be safe with 10W of power to spare; or is it dangerous?

 

[dogman_1234]

Well, if you are overclocking, it is bad not to have head room. I don't think you will have an issue. If you want to conserve energy, get a PSU that has an "Energy Star" rating along with an 80+ certificate.

 

[rolli59]

Which 460watt PSU? They are not all equal!
This one a quality unit can provide 456 watts on the +12volts where the most use is going to be http://www.newegg.com/Product/Product.aspx?Item=N82E16817151099
This one not so good can provide only 312 watts on the +12 volts and might struggle with your system http://www.newegg.com/Product/Product.aspx?Item=N82E16817171028