Does ATI Radeon 3870 work on my OS?

[efridge123]

I'm using OS 10.4.11 on a first gen mac pro. Would I have to upgrade my OS or will this card work on it. If the card is not compatible with my OS what cards would be besides the ATI Radeon x1900.

Thanks for your help!

 

[Lanbrown]

http://eshop.macsales.com/item/ATI Technologies/100435928/

http://www.amd.com/us/products/desk...3870-mac-pc/Pages/ati-radeon-hd-3800-mac.aspx