Here is AMD's Phenom II lineup:
![[Image: 9340-amdphenoniispan.jpg]](http://www.trustedreviews.com/images/article/inline/9340-amdphenoniispan.jpg)
As you can see, the PhenomII 720 is a triplecore, not a quad.
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Twilight, the AM3 CPUs wont work on your mainboard.
If the AM2+ CPUs work on your mainboard depends if it is a AM2+ mainboard (NOT AM2) and if it supports 125W TDP CPUs.
EDIT: I think it wont work, because i think your mainboard is a AM2 mainboard, not AM2+. But i am not 100% sure.
![[Image: 9340-amdphenoniispan.jpg]](http://www.trustedreviews.com/images/article/inline/9340-amdphenoniispan.jpg)
As you can see, the PhenomII 720 is a triplecore, not a quad.
--------
Twilight, the AM3 CPUs wont work on your mainboard.
If the AM2+ CPUs work on your mainboard depends if it is a AM2+ mainboard (NOT AM2) and if it supports 125W TDP CPUs.
EDIT: I think it wont work, because i think your mainboard is a AM2 mainboard, not AM2+. But i am not 100% sure.