I have added an article about some common types of caps in motherboards and VGA cards. See
Capacitor types in motherboards and VGA cards.
It is a bit hard to identify the type of caps you have but since the blue one which looks like it has escaped some gas through vents, I guess those are just wet electrolytic. If that is the case, you can simply replace with normal type.
In case those are not (Polymer type), you can try replacing them with double capacity wet electrolytic as polymers can be hard to find in local shops.