The 6000 is the fastest processor your board supports, dont really know how much performance gain you would get going from a 5200. The Windsor 5600 was a good overclocking chip but the 6000 was already pretty much at its limit. Save a few more bucks and get another board and go with a Phenom II X2 or a Athlon II X2.
Do you know if i'd be able to keep my existing hardware if changed the Mobo and
CPU?
Thanks a lot, i appreciate the help.
Something like this.
One of these.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103694
Or better, out of stock right now.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103648
And a board, something like this one, plus with the 710 southbridge gives you the chance of unlocking the disabled cores.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128394