well, what does "too warm" mean? those caps are specified to work correctly a couple thousand hours at 85°C or 105°C, neither of which they should ever reach on a card like ti 4200. and given that they aren't from well-regarded brands i would rather assume a problem with their chemistry rather than everything being fine. and then there's the other sole cap looking like a chemicon KZG doing it's usual bulging at the bottom, eventually leaking electrolyte from the bottom bung...
that's definitely one case where i would just replace everything with panasonic FR or an equivalent cap, geforce4 ti is starting to get up in price anyway.