Radeon HD 7770 on a BIOSTAR G41M7

[Windigo118]

So i'm getting a new card and I was wondering if I could put one of these two cards in my mobo (lacking in the power area)

mobo specs
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http://www.newegg.com/Product/Product.aspx?Item=N82E16813138183
http://reviews.cnet.com/motherboards/biostar-g41-m7-motherboard/4507-3049_7-33810147.html

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Cards
XFX Radeon HD 7770 PCIEx16 PCI-Express 3.0 (x16)
or
XFX Radeon HD 6770 PCIEx16 PCI-Express 2.1 (x16)
can I do it it would be really nice to have a 7770

Links to cards
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(7770)
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2060885&csid=_61
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(6770)
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=869628&csid=_61
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also if its not to much to ask how many watts would I need for psu?
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[ASHISH65]

Tell whole specs